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REJ10J2022-0100
E8a Emulator
Additional Document for User's Manual Notes on Connecting the H8/300H Tiny Series
Renesas Microcomputer Development Environment System H8 Family / H8/300H Tiny Series R0E00008AKCE00EP62
H8/3664F, H8/3687F, H8/3694F, H8/36037F, H8/36057F, H8/36049F, H8/36064F, H8/36087F, H8/36077F, H8/36094F, H8/36109F, H8/36079F, H8/3672F, H8/36014F, H8/36024F, H8/36902F, and H8/36912F
Rev.1.00 Revision Date: Aug. 03, 2009
Rev. 1.00 Aug.03, 2009 Page ii of vi REJ10J2022-0100
Notes regarding these materials
1. This document is provided for reference purposes only so that Renesas customers may select the appropriate Renesas products for their use. Renesas neither makes warranties or representations with respect to the accuracy or completeness of the information contained in this document nor grants any license to any intellectual property rights or any other rights of Renesas or any third party with respect to the information in this document. 2. Renesas shall have no liability for damages or infringement of any intellectual property or other rights arising out of the use of any information in this document, including, but not limited to, product data, diagrams, charts, programs, algorithms, and application circuit examples. 3. You should not use the products or the technology described in this document for the purpose of military applications such as the development of weapons of mass destruction or for the purpose of any other military use. When exporting the products or technology described herein, you should follow the applicable export control laws and regulations, and procedures required by such laws and regulations. 4. All information included in this document such as product data, diagrams, charts, programs, algorithms, and application circuit examples, is current as of the date this document is issued. Such information, however, is subject to change without any prior notice. Before purchasing or using any Renesas products listed in this document, please confirm the latest product information with a Renesas sales office. Also, please pay regular and careful attention to additional and different information to be disclosed by Renesas such as that disclosed through our website. (http://www.renesas.com ) 5. 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Renesas shall have no liability for malfunctions or damages arising out of the use of Renesas products beyond such specified ranges. 10. Although Renesas endeavors to improve the quality and reliability of its products, IC products have specific characteristics such as the occurrence of failure at a certain rate and malfunctions under certain use conditions. Please be sure to implement safety measures to guard against the possibility of physical injury, and injury or damage caused by fire in the event of the failure of a Renesas product, such as safety design for hardware and software including but not limited to redundancy, fire control and malfunction prevention, appropriate treatment for aging degradation or any other applicable measures. Among others, since the evaluation of microcomputer software alone is very difficult, please evaluate the safety of the final products or system manufactured by you. 11. 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Contents
Notes on Connecting the H8/3664F, H8/3687F, H8/3694F, H8/36037F, H8/36057F, H8/36049F, H8/36064F, H8/36087F, H8/36077F, H8/36094F, H8/36109F, and H8/36079F.................................................................................................................1
Section 1 Inside the E8a Emulator User's Manual ..................................................3 Section 2 Connecting the Emulator with the User System ......................................5 Section 3 Pin Assignments of the E8a Connector ...................................................7 Section 4 Example of Emulator Connection............................................................9 Section 5 Differences between the MCUs (H8/3664F, H8/3687(G)F, H8/3694(G)F, H8/36037(G)F, H8/36057(G)F, H8/36049(G)F, H8/36064(G)F, H8/36087(G)F, H8/36077(G)F, H8/36094(G)F, H8/36109(G)F, and H8/36079(G)F) and the Emulator.........................15 Notes on Connecting the H8/3672F, H8/36014F, and H8/36024F .........................1 Section 1 Inside the E8a Emulator User's Manual ..................................................3 Section 2 Connecting the Emulator with the User System ......................................5 Section 3 Pin Assignments of the E8a Connector ...................................................7 Section 4 Example of Emulator Connection............................................................9 Section 5 Differences between the MCUs (H8/3672F, H8/36014(G)F, and H8/36024(G)F) and the Emulator .........................................................15 Notes on Connecting the H8/36902F and H8/36912F.............................................1 Section 1 Inside the E8a Emulator User's Manual ................................................3 Section 2 Connecting the Emulator with the User System ....................................5
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Section 3 Pin Assignments of the E8a Connector .................................................7 Section 4 Example of Emulator Connection .........................................................9 Section 5 Differences between the MCUs (H8/36902F and H8/36912F) and the Emulator .................................................................................13
Note: This manual applies to the following product versions of the E8a emulator software. Table E8a Emulator Software
E8a Emulator V.1.02 Release 00 or later (H8 Tiny/Super Low Power E8a Emulator V.1.03.00 or later)* Note: This is a revision of the debugger.
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Notes on Connecting the H8/3664F, H8/3687F, H8/3694F, H8/36037F, H8/36057F, H8/36049F, H8/36064F, H8/36087F, H8/36077F, H8/36094F, H8/36109F, and H8/36079F
Notes on Connecting the H8/3664F, H8/3687F, H8/3694F, H8/36037F, H8/36057F, H8/36049F, H8/36064F, H8/36087F, H8/36077F, H8/36094F, H8/36109F, and H8/36079F
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Notes on Connecting the H8/3664F, H8/3687F, H8/3694F, H8/36037F, H8/36057F, H8/36049F, H8/36064F, H8/36087F, H8/36077F, H8/36094F, H8/36109F, and H8/36079F
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Section 1 Inside the E8a Emulator User's Manual
Section 1 Inside the E8a Emulator User's Manual
The E8a emulator (hereafter referred to as E8a emulator in this document) manual consists of two documents: the E8a User's Manual and the E8a Additional Document for User's Manual (this document). Be sure to read BOTH documents before using the E8a emulator. (1) E8a Emulator User's Manual The E8a Emulator User's Manual describes the hardware specifications and how to use the emulator debugger. E8a emulator hardware specifications Connecting the E8a emulator to the host computer or user system Operating the E8a emulator debugger Tutorial: From starting up the E8a emulator debugger to debugging (2) E8a Additional Document for User's Manual The E8a Additional Document for User's Manual describes content dependent on the MCUs and precautionary notes. Example of the E8a emulator connection or interface circuit necessary for designing the hardware Notes on using the E8a emulator Setting the E8a emulator debugger during startup
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Section 1 Inside the E8a Emulator User's Manual
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Section 2 Connecting the Emulator with the User System
Section 2 Connecting the Emulator with the User System
Before connecting an E8a emulator (hereafter referred to as emulator) with the user system, a connector must be installed in the user system so that an user system interface cable can be connected. When designing the user system, refer to the connector and recommended circuits shown in this manual. Before designing the user system, be sure to read the E8a emulator user's manual and the hardware manual for related MCUs. Table 2.1 shows the recommended connector for the emulator. Table 2.1 Recommended Connector
Type Number 2514-6002 Manufacturer 3M Limited Specifications 14-pin straight type
Connect pins 2, 4, 6, 10, 12, and 14 of the user system connector to GND firmly on the PCB. These pins are used as electrical GND and to monitor the connection of the user system connector. Note the pin assignments of the user system connector.
User system interface cable
User system connector
User system Pin 2
Pin 1
Figure 2.1 Connecting the User System Interface Cable to the User System
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Section 2 Connecting the Emulator with the User System
Notes: 1. The pin number assignments of the 14-pin connector differ from those of the E10AUSB emulator; however, the physical location is the same. 2. Do not place any components within 3 mm of the connector. 3. When the emulator is used in the [Program Flash] mode, connect the emulator similarly to the user system.
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Section 3 Pin Assignments of the E8a Connector
Section 3 Pin Assignments of the E8a Connector
Figure 3.1 shows the pin assignments of the emulators connector.
Pin No. 1 Pin 1 mark Connector 2 3 4 5 6 7 8 9 10 Top view Pin 1 mark 11 12 13 14 MCU Signal P87 Vss N.C. *2 Vss P86 Vss NMI# *1 Vcc N.C. *2 Vss P85 Vss RES# *1 Vss
Pin 2 Pin 1
Pin 14 Pin 13
Notes: 1. The symbol (#) means that the signal is active-low. 2. These pins are not used in the H8/300H Tiny series. Do not connect anything to these pins.
Figure 3.1 Pin Assignments of the Emulators Connector
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Section 3 Pin Assignments of the E8a Connector
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Section 4 Example of Emulator Connection
Section 4 Example of Emulator Connection
Figures 4.1 and 4.2 show examples of emulator connection to the MCU without the POR and LVD options (H8/3664F, H8/3687F, H8/3694F, H8/36037F, H8/36057F, H8/36049F, H8/36094F, and H8/36109F; hereafter referred to as the MCU without the POR and LVD options) and to the MCU with the POR and LVD options installed (H8/3687(G)F, H8/3694(G)F, H8/36037(G)F, H8/36057(G)F, H8/36049(G)F, H8/36064(G)F, H8/36087(G)F, H8/36077(G)F, H8/36094(G)F, H8/36109(G)F, and H8/36079(G)F; hereafter referred to as the MCU with the POR and LVD options), respectively.
Pulled-up at 4.7 k or more
Vcc Vcc
Vcc Vcc Vcc Vcc
NMI# P85 P86 P87 Vcc User logic RES# Pulled-up at 4.7 k or more *
NMI# P85 MCU P86 without the POR and P87 LVD options
RES#
Vss
User system Connector 14 pins with a 2.54-mm pitch
*: Open-collector buffer
Figure 4.1 Example of Emulator Connection (MCU without POR and LVD Options)
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Section 4 Example of Emulator Connection
Pulled-up at 4.7 k or more
Vcc Vcc
Vcc Vcc Vcc Vcc
NMI# P85 P86 P87 Vcc
NMI# P85 MCU P86 with the POR and P87 LVD options
RES#
RES#
Vss
User system Connector 14 pins with a 2.54-mm pitch
Figure 4.2 Example of Emulator Connection (MCU with POR and LVD Options)
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Section 4 Example of Emulator Connection
Notes: 1. P85 to P87 pins are used by the emulator. Pull up and connect the emulator and MCU pins.
MCU User system connector Vcc 4.7 k Pins 1, 5, and 11 P85 to P87
Figure 4.3 Connection of Emulator and P85 to P87 Pins 2. The NMI# signal is used for forced break control by the emulator. Connect the emulator and MCU pins directly. In debugging without forced break control, change the mode with the High-performance Embedded Workshop. Then, when the user logic is connected with the open-collector output buffer, the NMI# pin can be used in the user system (however, at power-on, the NMI# pin is used by the emulator).
When connected directly: User system connector Vcc 4.7 k Pin 7 NMI# pin MCU
When the NMI# pin is used (forced break cannot be used): Vcc User system connector User logic * 4.7 k MCU
Pin 7 *Open-collector output buffer
NMI# pin
Figure 4.4 Connection of Emulator and NMI# Pin
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Section 4 Example of Emulator Connection
3. The RES# pin is used by the emulator. Create the following circuit by connecting the open-collector output buffer so that reset input can be accepted from the emulator.
Connection of the MCU without the POR and LVD options Vcc User system connector User logic *1 4.7 k MCU without the POR and LVD options
Pin 13
RES# pin
Connection of the MCU with the POR and LVD options User system connector Pin 13 *2 Vcc MCU with the POR and LVD options
RES# pin
Notes: 1. Open-collector output buffer. 2. For the recommended capacitance of the capacitor that is connected to the RES# pin, refer to the hardware manual.
Figure 4.5 Example of a Reset Circuit 4. Connect Vss and Vcc with the Vss and Vcc of the MCU, respectively (within the guaranteed range of the microcomputer). When the power-supply mode is used, the power is supplied to the user system. Check that the power consumption or voltage of the user system is within the available range of E8a and avoid a problem such as closing of the power-supply circuit. 5. Connect nothing with N.C.
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Section 4 Example of Emulator Connection
WARNING
In the power-supply mode, connect the emulator after checking that the power-supply circuit on the user system is not closed or the pin number assignments of the user system connector is correct. Failure to do so will result in a FIRE HAZARD and will damage the host computer, the emulator, and the user system.
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Section 4 Example of Emulator Connection
6. Figure 4.6 shows the interface circuit in the E8a emulator. Use this figure as a reference when determining the pull-up resistance value.
User system connector Power-supply circuit (only used for the power-supply mode) Emulator control circuit 100 k x3 1 M 100 k Vcc 8
22
P87
1
74LVC125B 22
P85
11
74LVC125B 22 NMI#
7
74LVC125B Vcc 3.3 V
SN74LVC2T45 3.3 V Vcc 22 SN74LVC2T45 3.3 V Vcc 22 3.3 V 10 k SN74LVC2T45 2CS2462 10 k RES# 13 P86 5
Notes: 1. This figure omits the test circuits and pin numbers 2, 3, 4, 6, 9, 10, 12, and 14 for the user connector that are not used when H8/Tiny series is connected. 2. The power of 74LVC125B is supplied from Vcc in the user connector (or in the power-supply circuit during power-supply mode).
Figure 4.6 Interface Circuit in the E8a Emulator (Reference)
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Section 5 Differences between the MCUs and the Emulator
Section 5 Differences between the MCUs (H8/3664F, H8/3687(G)F, H8/3694(G)F, H8/36037(G)F, H8/36057(G)F, H8/36049(G)F, H8/36064(G)F, H8/36087(G)F, H8/36077(G)F, H8/36094(G)F, H8/36109(G)F, and H8/36079(G)F) and the Emulator
This section describes the differences between the emulator and MCU operations. 1. [Emulator Setting] Dialog Box The [Emulator Setting] dialog box is provided for setting the items that need to be set when the emulator starts up (settings are saved in the session).
Figure 5.1 [Emulator Setting] Dialog Box
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Section 5 Differences between the MCUs and the Emulator
To keep the [Emulator Setting] dialog box closed next time the emulator is started, check "Do not show this dialog box again." at the bottom of the [Emulator Setting] dialog box. You can open the [Emulator Setting] dialog box using either one of the following methods: After the emulator gets started, select Menu - [Setup] -> [Emulator] -> [Emulator Setting...]. Start the emulator while holding down the Ctrl key. After the emulator gets started and an error occurred, restart the emulator. When you check "Do not show this dialog box again.", the emulator doesn't supply power to the user system. To use this check box, start the emulator after turning on the power. 2. Emulator Mode The selection of the device, the specification of the mode, and the setting of the power supply are done in the [Emulator mode] page of the [Emulator Setting] dialog box. Device Select the device name in use from the [Device] combo box. The following items are selected in the [Mode] group box. Modes * Erase Flash and Connect This mode is used when there is no emulator program in the flash memory of the target device. In this mode, data of the flash memory of the target device is erased when the emulator is activated. Select this item when the emulator is firstly activated, the version of the emulator's software is updated, or the ID code is changed. * Keep Flash and Connect This mode is used when there is an emulator program in the flash memory of the target device. Enter the ID code specified above (`Erase Flash and Connect'). If an incorrect code is entered, all the programs on the flash memory will be erased. Note: When the emulator gets started in this mode after selecting "Do not show this dialog box again.", the initial value of the ID code is `0E8A'. If you use the ID code other than the initial value, do not use "Do not show this dialog box again.". * Program Flash This mode is used when the emulator is used for programming the flash memory. Debugging the program is disabled. To download the load module, register it in the workspace. Note: In the H8/Tiny or H8/Super Low Power device, the ID code is not entered in the Program Flash mode.
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Section 5 Differences between the MCUs and the Emulator
Power Supply When [Power Target from emulator. (MAX 300mA)] is checked, power will be supplied to the user system up to 300 mA. Then select 3.3 V or 5.0 V according to the power voltage of the user system. 3. Emulator Activation and ID Code In the H8/Tiny- or H8/Super Low Power-series MCU, the [System Clock] and [ID Code] dialog boxes are set when the emulator is activated. Setting the system clock Enter the clock value input to the board in use. The initial value differs in each MCU.
Figure 5.2 [System Clock] Dialog Box Setting the ID code When the emulator is activated in the [Erase Flash and Connect] mode, enter any hexadecimal four-digit ID code to be set (except for H'FFFF). The initial value is H'0E8A. When the emulator is activated in the [Keep Flash and Connect] mode, enter the correct ID code. If an incorrect ID code is entered, all the contents of the flash memory will be erased. In this case, restart the emulator in the [Erase Flash and Connect] mode.
Figure 5.3 [ID Code] Dialog Box
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Section 5 Differences between the MCUs and the Emulator
4. When the emulator system is initiated, it initializes the general registers and part of the control registers as shown in table 5.1. Table 5.1 Register Initial Values at Emulator Power-On
Register PC ER0 to ER6 ER7 (SP) CCR Initial Value Reset vector value in the vector address table H'0000 H'FF80 (H'FFFF80 for H8/36049F, H8/36109F, and H8/36079F) H'80
5. Low-Power Mode During a user program break, the CPU operating frequency is forced to a system clock () for high-speed operation. 6. RES# Signal The MCU signals are only valid during user program execution started with clicking the GO or STEP-type button. During a user program break, the RES# signal is not sent to the MCUs. Note: Do not start user program execution or access the memory while control input signal (RES#) is being low. A TIMEOUT error will occur. 7. System Control Register In the emulator, the internal I/O registers can be accessed from the [IO] window. However, be careful when accessing the system control register. The emulator saves the register value of the system control register at a break and returns the value when the user program is executed. Since this is done during a break, do not rewrite the system control register in the [IO] window. 8. Memory Access during Emulation If the memory contents are referenced or modified during emulation, realtime emulation cannot be performed because the user program is temporarily halted. 9. The emulator communicates with the MCUs by using the NMI#, RES#, and P85 to P87 pins. These pins cannot be used, however, the NMI# pin can be used by changing the setting of the [NMI signal] group box in the [Configuration] dialog box.
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Section 5 Differences between the MCUs and the Emulator
10. Sum Data Displayed in the Program Flash Mode Sum data, which is displayed in the `Program Flash' mode, is a value that data in the whole ROM areas has been added by byte (including data in the dedicated ROM area for the emulator). 11. Note on Executing the User Program The set value is rewritten since the emulator uses flash memory and watchdog timer registers during programming (Go, Step In, Step Out, or Step Over) of the flash memory. 12. The power consumed by the MCU can reach several milliamperes. This is because the user power supply drives ICs to make the communication signal level match the user-system power-supply voltage. The power consumed rises little during user program execution since the emulator does not perform communication; it rises more during a break. 13. Program Area for the Emulator Do not access a part of areas in the flash memory or the internal RAM since the emulator program uses these areas. If the contents of the program area for the emulator are changed, the emulator will not operate normally. In this case, restart the emulator with the Erase Flash and Connect mode. Table 5.2 Program Area for the Emulator
MCU Name H8/3664F H8/3694(G)F H8/36064(G)F H8/36094(G)F H8/3687(G)F H8/36037(G)F H8/36057(G)F H8/36087(G)F H8/36077(G)F H8/36049(G)F H8/36109(G)F H8/36079(G)F Flash memory: H'018000 to H'018FFF (H8/36049(G)F) H'01F000 to H'01FFFF (H8/36109(G)F and H8/36079(G)F) Internal RAM: H'FFF780 to H'FFFB7F Vector, etc.: H'000004 to H'00000D, H'00001C to H'00001F, H'000030 to H'000033 Flash memory: H'D000 to H'DFFF Internal RAM: H'F780 to H'FB7F Vector, etc.: H'0002 to H'0007, H'000E to H'000F, H'0018 to H'0019 Program Area Flash memory: H'7000 to H'7FFF Internal RAM: H'F780 to H'FB7F Vector, etc.: H'0002 to H'0007, H'000E to H'000F, H'0018 to H'0019
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Section 5 Differences between the MCUs and the Emulator
14. The emulator uses a two-word stack pointer for values stored on a user program break. Therefore, the stack area must accept two-word addresses. 15. Do not use an MCU that has been used for debugging. If the flash memory is rewritten many times, data may be lost due to retention problems after the emulator has been left for a few days and the data will be erased. If an error message is displayed, exchange the MCU for a new one. 16. Forced Break Function When the NMI# signal is used for a forced break in the emulator, the vector address of NMI# is rewritten by the emulator program. An error will occur if a file in the host computer and the flash memory contents are verified. Do not use the flash memory contents as the ROM data for the mask ROM after it has been saved. 17. Setting the Usage of the NMI# Signal In the [Configuration] dialog box, when the NMI# signal is changed as it is used in the user program, the vector address of NMI# is not recovered. Reload the user program. 18. Address Break Release Function When the address break function is not released for users, the vector address of address break is rewritten by the emulator program. An error will occur if a file in the host computer and the flash memory contents are verified. Do not use the flash memory contents as the ROM data for the mask ROM after it has been saved.
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Section 5 Differences between the MCUs and the Emulator
19. Initializing the Internal I/O Register with the Reset_CPU Function Be sure to initialize the internal I/O registers shown below by the user program since they are not initialized by selecting [Debug] - [Reset CPU] or using the RESET command. Table 5.3 Registers Not Initialized
MCU Name H8/3664F H8/3687F H8/3694F H8/36037F H8/36057F H8/36049F H8/36064F H8/36087F H8/36109F H8/36077F H8/36079F H8/36094F Register Not Initialized IEGR1, IEGR2, IENR1, IRR1, IWPR, MSTCR1, TSCR IEGR1, IEGR2, IENR1, IENR2, IRR1, IRR2, IWPR, MSTCR1, MSTCR2 IEGR1, IEGR2, IENR1, IRR1, IWPR, MSTCR1 IEGR1, IEGR2, IENR1, IENR2, IRR1, IRR2, IWPR, MSTCR1, MSTCR2 IEGR1, IEGR2, IENR1, IENR2, IRR1, IRR2, IWPR, MSTCR1, MSTCR2 IEGR1, IEGR2, IENR1, IENR2, IRR1, IRR2, IWPR, MSTCR1, MSTCR2 IEGR1, IEGR2, IENR1, IENR2, IRR1, IRR2, IWPR, MSTCR1, MSTCR2 IEGR1, IEGR2, IENR1, IENR2, IRR1, IRR2, IWPR, MSTCR1, MSTCR2 IEGR1, IEGR2, IENR1, IENR2, IRR1, IRR2, IWPR, MSTCR1, MSTCR2 IEGR1, IEGR2, IENR1, IRR1, IWPR, MSTCR1
20. Step Execution of the SLEEP Instruction When the interrupt mask bit (I) in the condition code register (CCR) is 1, do not perform step execution of the SLEEP instruction. If the step execution is performed and not finished correctly, restart the emulator. 21. Processing at Emulator Activation (H8/36064(G)F, H8/36077(G)F, H8/36094(G)F, and H8/36109(G)F) When the emulator is activated, the watchdog timer is not active; the operation of the emulator differs from that of the MCU.
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Section 5 Differences between the MCUs and the Emulator
22. Items Set in the [Configuration] Dialog Box The emulator operation conditions are set in the [Configuration] dialog box.
Figure 5.4 [Configuration] Dialog Box ([Emulator System] Page)
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Section 5 Differences between the MCUs and the Emulator
Items that can be displayed in this dialog box are listed below.
[Device] combo box [Emulation mode] combo box Displays the MCU name. Selects the emulation mode at user program execution. Select Normal to perform normal emulation. Select No break to disable PC breakpoint or break condition settings during emulation. [Step option] combo box Sets the step interrupt option. Disable interrupts during single step execution: Disables interrupts during step execution. Enable interrupts during single step execution: Enables interrupts during step execution. [NMI signal] group box Sets the use of the NMI# signal. When used as a forced break in the emulator, select Emulator. In this case, the NMI# signal cannot be used. The contents of the NMI# vector address are rewritten by the emulator program. When used in the user program, select User. In this case, the forced break cannot be used. Before user program execution, set the breakpoints or break conditions for the exception processing and generate exceptions to halt the program. [User interface clock] combo box [Breakcondition mode] group box Displays the transfer clock of the user interface. Sets the address break release function. When the address break function is not used in the user program, select Emulator. In this case, the hardware break and step functions can be used. The contents of the vector address are rewritten by the emulator program to satisfy the break conditions. When the address break is used in the user program, select User. In this case, the hardware break and step functions cannot be used. [Flash memory synchronization] combo box Selects whether or not the contents of the flash memory are acquired by the emulator when the user program is stopped or the position where the PC break is set is put back as the original code. When the flash memory is not programmed by the user program, its contents need not be acquired by the emulator.
*1 *1
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Section 5 Differences between the MCUs and the Emulator
If there is no problem with the state that the program in the flash memory has been replaced as the PC break code, the position where the PC break is set needs not be put back as the original code. Disable: Read or program is not performed for the flash memory except when the emulator is activated, the flash memory area is modified, and the settings of the PC break to the flash memory area are changed. PC to flash memory: When the user program is stopped, the specified PC break code is replaced as the original instruction. Select this option if there is a problem with the state that the program in the flash memory has been replaced as the PC break code. Flash memory to PC: When the user program is stopped, the contents of the flash memory are read by the emulator. Select this option if the flash memory is reprogrammed by the user program. PC to flash memory, Flash memory to PC: When the user program is stopped, the contents of the flash memory are read by the emulator and the specified PC break code is replaced as the original instruction. Select this option if the flash memory is reprogrammed by the user program and there is a problem with the state that the program in the flash memory has been replaced as the PC break code. [Step Over option] combo box Enables or disables programming of the flash memory while executing step operation. Programming of the flash memory: Uses a software break for step operation (e.g. Step Over) and enables programming of the flash memory. No Programming of the flash memory: Uses Break Condition for step operation (e.g. Step Over) and disables programming of the *2 flash memory . [Flash memory write after download] group box Enables or disables programming of the flash memory after downloading the program. Disable: Disables programming of the flash memory after downloading the program. Enable: Enables programming of the flash memory after downloading the program. [Short break] group box Enables or disables memory access during user program execution. Disable: Disables memory access during user program execution. Enable: Enables memory access during user program execution.
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Section 5 Differences between the MCUs and the Emulator
Notes: 1. Includes interrupts in a break. 2. When Step Over is performed after selecting [No Programming of the flash memory] for [Step Over option], the instruction that follows a JSR, BSR, or TRAPA instruction will also be executed. If there are consecutive JSR, BSR, or TRAPA instructions, execution proceeds until it reaches an instruction that is not JSR, BSR, or TRAPA. (When there are consecutive function calls in C language, the program steps all of these functions.) 23. Available MCUs for the Emulator The H8/3684F, H8/36054F, H8/36034F, H8/3664N, H8/3687N, and H8/3694N are also available for the emulator. When the emulator is activated, set the MCU to be selected as shown in table 5.4. Note that, however, an error will not be displayed even if a program which is larger than the internal ROM capacity is downloaded. Table 5.4 List of Available MCUs
MCU to be Used H8/3684F, H8/3687N H8/3664N H8/3694N H8/36054F H8/36034F MCU to be Selected H8/3687F H8/3664F H8/3694F H8/36057F H8/36037F
24. Restriction on Software Write Enable (SWE) Bit If the SWE bit is set to 1 during execution of the user program, a communication timeout error will occur. Do not set this bit to 1.
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Section 5 Differences between the MCUs and the Emulator
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Notes on Connecting the H8/3672F, H8/36014F, and H8/36024F
Notes on Connecting the H8/3672F, H8/36014F, and H8/36024F
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Notes on Connecting the H8/3672F, H8/36014F, and H8/36024F
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Section 1 Inside the E8a Emulator User's Manual
Section 1 Inside the E8a Emulator User's Manual
The E8a emulator (hereafter referred to as E8a emulator in this document) manual consists of two documents: the E8a User's Manual and the E8a Additional Document for User's Manual (this document). Be sure to read BOTH documents before using the E8a emulator. (1) E8a Emulator User's Manual The E8a Emulator User's Manual describes the hardware specifications and how to use the emulator debugger. E8a emulator hardware specifications Connecting the E8a emulator to the host computer or user system Operating the E8a emulator debugger Tutorial: From starting up the E8a emulator debugger to debugging (2) E8a Additional Document for User's Manual The E8a Additional Document for User's Manual describes content dependent on the MCUs and precautionary notes. Example of the E8a emulator connection or interface circuit necessary for designing the hardware Notes on using the E8a emulator Setting the E8a emulator debugger during startup
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Section 1 Inside the E8a Emulator User's Manual
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Section 2 Connecting the Emulator with the User System
Section 2 Connecting the Emulator with the User System
Before connecting an E8a emulator (hereafter referred to as emulator) with the user system, a connector must be installed in the user system so that an user system interface cable can be connected. When designing the user system, refer to the connector and recommended circuits shown in this manual. Before designing the user system, be sure to read the E8a emulator user's manual and the hardware manual for related MCUs. Table 2.1 shows the recommended connector for the emulator. Table 2.1 Recommended Connector
Manufacturer 3M Limited Specifications 14-pin straight type
Type Number 2514-6002
Connect pins 2, 4, 6, 10, 12, and 14 of the user system connector to GND firmly on the PCB. These pins are used as electrical GND and to monitor the connection of the user system connector. Note the pin assignments of the user system connector.
User system interface cable
User system connector
User system Pin 2
Pin 1
Figure 2.1 Connecting the User System Interface Cable to the User System
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Section 2 Connecting the Emulator with the User System
Notes: 1. The pin number assignments of the 14-pin connector differ from those of the E10AUSB emulator; however, the physical location is the same. 2. Do not place any components within 3 mm of the connector. 3. When the emulator is used in the [Program Flash] mode, connect the emulator similarly to the user system.
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Section 3 Pin Assignments of the E8a Connector
Section 3 Pin Assignments of the E8a Connector
Figure 3.1 shows the pin assignments of the emulators connector.
Pin No. 1 Pin 1 mark Connector 2 3 4 5 6 7 8 9 10 Top view Pin 1 mark 11 12 13 14 MCU Signal E10T_2 Vss N.C. *2 Vss E10T_1 Vss NMI# *1 Vcc N.C. *2 Vss E10T_0 Vss RES# *1 Vss
Pin 2 Pin 1
Pin 14 Pin 13
Notes: 1. The symbol (#) means that the signal is active-low. 2. These pins are not used in the H8/300H Tiny series. Do not connect anything to these pins.
Figure 3.1 Pin Assignments of the Emulators Connector
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Section 3 Pin Assignments of the E8a Connector
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Section 4 Example of Emulator Connection
Section 4 Example of Emulator Connection
Figures 4.1 and 4.2 show examples of emulator connection to the MCU without the POR and LVD options (H8/3672F, H8/36014F, or H8/36024F without the POR and LVD options; hereafter referred to as the MCU without the POR and LVD options) and to the MCU with the POR and LVD options installed (H8/36014(G)F or H8/36024(G)F; hereafter referred to as the MCU with the POR and LVD options), respectively.
Pulled-up at 4.7 k or more
Vcc Vcc
Vcc Vcc Vcc Vcc
NMI#
E10T_0 E10T_1 E10T_2
NMI#
E10T_0 E10T_1 E10T_2
Vcc User logic RES# Pulled-up at 4.7 k or more * RES#
MCU without the POR and LVD options
Vss
User system Connector 14 pins with a 2.54-mm pitch
*: Open-collector buffer
Figure 4.1 Example of Emulator Connection (MCU without POR and LVD Options)
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Section 4 Example of Emulator Connection
Pulled-up at 4.7 k or more
Vcc Vcc
Vcc Vcc Vcc Vcc
NMI#
E10T_0 E10T_1 E10T_2
NMI#
E10T_0 E10T_1 E10T_2
Vcc
MCU with the POR and LVD options
RES#
RES#
Vss
User system Connector 14 pins with a 2.54-mm pitch
Figure 4.2 Example of Emulator Connection (MCU with POR and LVD Options)
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Section 4 Example of Emulator Connection
Notes: 1. E10T_0 to E10T_2 pins are used by the emulator. Pull up and connect the emulator and MCU pins.
MCU User system connector Vcc 4.7 k Pins 1, 5, and 11
E10T_0 to E10T_2
Figure 4.3 Connection of Emulator and E10T_0 to E10T_2 Pins 2. The NMI# signal is used for forced break control by the emulator. Connect the emulator and MCU pins directly. In debugging without forced break control, change the mode with the High-performance Embedded Workshop. Then, when the user logic is connected with the open-collector output buffer, the NMI# pin can be used in the user system (however, at power-on, the NMI# pin is used by the emulator).
When connected directly: User system connector Vcc 4.7 k Pin 7 NMI# pin MCU
When the NMI# pin is used (forced break cannot be used): Vcc User system connector User logic * 4.7 k MCU
Pin 7 *Open-collector output buffer
NMI# pin
Figure 4.4 Connection of Emulator and NMI# Pin
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Section 4 Example of Emulator Connection
3. The RES# pin is used by the emulator. Create the following circuit by connecting the open-collector output buffer so that reset input can be accepted from the emulator.
Connection of the MCU without the POR and LVD options Vcc User system connector User logic * 4.7 k MCU without the POR and LVD options
Pin 13 *Open-collector output buffer
RES# pin
Connection of the MCU with the POR and LVD options User system connector Pin 13 Vcc MCU with the POR and LVD options
RES# pin
Figure 4.5 Example of a Reset Circuit 4. Connect Vss and Vcc with the Vss and Vcc of the MCU, respectively (within the guaranteed range of the microcomputer). When the power-supply mode is used, the power is supplied to the user system. Check that the power consumption or voltage of the user system is within the available range of E8a and avoid a problem such as closing of the power-supply circuit. 5. Connect nothing with N.C.
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Section 4 Example of Emulator Connection
WARNING
In the power-supply mode, connect the emulator after checking that the power-supply circuit on the user system is not closed or the pin number assignments of the user system connector is correct. Failure to do so will result in a FIRE HAZARD and will damage the host computer, the emulator, and the user system.
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Section 4 Example of Emulator Connection
6. Figure 4.6 shows the interface circuit in the E8a emulator. Use this figure as a reference when determining the pull-up resistance value.
User system connector Power-supply circuit (only used for the power-supply mode) Emulator control circuit 100 k x3 1 M 100 k Vcc 8
22
E10T_2
1
74LVC125B 22
E10T_0
11
74LVC125B 22 NMI#
7
74LVC125B Vcc 3.3 V
SN74LVC2T45 3.3 V Vcc 22 SN74LVC2T45 3.3 V Vcc 22 3.3 V 10 k SN74LVC2T45 2CS2462 10 k RES# 13 E10T_1 5
Notes: 1. This figure omits the test circuits and pin numbers 3, 4, 9, and 14 for the user connector that are not used when H8/Tiny series is connected. 2. The power of 74LVC125B is supplied from Vcc in the user connector (or in the power-supply circuit during power-supply mode).
Figure 4.6 Interface Circuit in the E8a Emulator (Reference)
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Section 5 Differences between the MCUs and the Emulator
Section 5 Differences between the MCUs (H8/3672F, H8/36014(G)F, and H8/36024(G)F) and the Emulator
This section describes the differences between the emulator and MCU operations. 1. [Emulator Setting] Dialog Box The [Emulator Setting] dialog box is provided for setting the items that need to be set when the emulator starts up (settings are saved in the session).
Figure 5.1 [Emulator Setting] Dialog Box
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Section 5 Differences between the MCUs and the Emulator
To keep the [Emulator Setting] dialog box closed next time the emulator is started, check "Do not show this dialog box again." at the bottom of the [Emulator Setting] dialog box. You can open the [Emulator Setting] dialog box using either one of the following methods: After the emulator gets started, select Menu - [Setup] -> [Emulator] -> [Emulator Setting...]. Start the emulator while holding down the Ctrl key. After the emulator gets started and an error occurred, restart the emulator. When you check "Do not show this dialog box again.", the emulator doesn't supply power to the user system. To use this check box, start the emulator after turning on the power. 2. Emulator Mode The selection of the device, the specification of the mode, and the setting of the power supply are done in the [Emulator mode] page of the [Emulator Setting] dialog box. Device Select the device name in use from the [Device] combo box. The following items are selected in the [Mode] group box. Modes * Erase Flash and Connect This mode is used when there is no emulator program in the flash memory of the target device. In this mode, data of the flash memory of the target device is erased when the emulator is activated. Select this item when the emulator is firstly activated, the version of the emulator's software is updated, or the ID code is changed. * Keep Flash and Connect This mode is used when there is an emulator program in the flash memory of the target device. Enter the ID code specified above (`Erase Flash and Connect'). If an incorrect code is entered, all the programs on the flash memory will be erased. Note: When the emulator gets started in this mode after selecting "Do not show this dialog box again.", the initial value of the ID code is `0E8a'. If you use the ID code other than the initial value, do not use "Do not show this dialog box again.". * Program Flash This mode is used when the emulator is used for programming the flash memory. Debugging the program is disabled. To download the load module, register it in the workspace. Note: In the H8/Tiny or H8/Super Low Power device, the ID code is not entered in the Program Flash mode.
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Section 5 Differences between the MCUs and the Emulator
Power Supply When [Power Target from emulator. (MAX 300mA)] is checked, power will be supplied to the user system up to 300 mA. Then select 3.3 V or 5.0 V according to the power voltage of the user system. 3. Emulator Activation and ID Code In the H8/Tiny- or H8/Super Low Power-series MCU, the [System Clock] and [ID Code] dialog boxes are set when the emulator is activated. Setting the system clock Enter the clock value input to the board in use. The initial value differs in each MCU.
Figure 5.2 [System Clock] Dialog Box Setting the ID code When the emulator is activated in the [Erase Flash and Connect] mode, enter any hexadecimal four-digit ID code to be set (except for H'FFFF). The initial value is H'0E8A. When the emulator is activated in the [Keep Flash and Connect] mode, enter the correct ID code. If an incorrect ID code is entered, all the contents of the flash memory will be erased. In this case, restart the emulator in the [Erase Flash and Connect] mode.
Figure 5.3 [ID Code] Dialog Box
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Section 5 Differences between the MCUs and the Emulator
4. When the emulator system is initiated, it initializes the general registers and part of the control registers as shown in table 5.1. Table 5.1 Register Initial Values at Emulator Power-On
Register PC ER0 to ER6 ER7 (SP) CCR Initial Value Reset vector value in the vector address table H'0000 H'FF80 H'80
5. Low-Power Mode During a user program break, the CPU operating frequency is forced to a system clock () for high-speed operation. 6. RES# Signal The MCU signals are only valid during user program execution started with clicking the GO or STEP-type button. During a user program break, the RES# signal is not sent to the MCUs. Note: Do not start user program execution or access the memory while control input signal (RES#) is being low. A TIMEOUT error will occur. 7. System Control Register In the emulator, the internal I/O registers can be accessed from the [IO] window. However, be careful when accessing the system control register. The emulator saves the register value of the system control register at a break and returns the value when the user program is executed. Since this is done during a break, do not rewrite the system control register in the [IO] window. 8. Memory Access during Emulation If the memory contents are referenced or modified during emulation, realtime emulation cannot be performed because the user program is temporarily halted. 9. The emulator communicates with the MCUs by using the NMI#, RES#, and E10T_2 to E10T_0 pins. These pins cannot be used, however, the NMI# pin can be used by changing the setting of the [NMI signal] group box in the [Configuration] dialog box.
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Section 5 Differences between the MCUs and the Emulator
10. Sum Data Displayed in the Program Flash Mode Sum data, which is displayed in the `Program Flash' mode, is a value that data in the whole ROM areas has been added by byte (including data in the dedicated ROM area for the emulator). 11. Note on Executing the User Program The set value is rewritten since the emulator uses flash memory and watchdog timer registers during programming (Go, Step In, Step Out, or Step Over) of the flash memory. 12. The power consumed by the MCU can reach several milliamperes. This is because the user power supply drives ICs to make the communication signal level match the user-system power-supply voltage. The power consumed rises little during user program execution since the emulator does not perform communication; it rises more during a break. 13. Program Area for the Emulator Do not access a part of areas in the flash memory or the internal RAM since the emulator program uses these areas. If the contents of the program area for the emulator are changed, the emulator will not operate normally. In this case, restart the emulator with the Erase Flash and Connect mode. Table 5.2 Program Area for the Emulator
MCU Name H8/3672F Program Area Flash memory: H'4000 to H'4FFF Internal RAM: H'F780 to H'FB7F Vector, etc.: H'0002 to H'0007, H'000E to H'000F, H'0018 to H'0019 H8/36014(G)F H8/36024(G)F Flash memory: H'7000 to H'7FFF Internal RAM: H'F780 to H'FB7F Vector, etc.: H'0002 to H'0007, H'000E to H'000F, H'0018 to H'0019
14. The emulator uses a two-word stack pointer for values stored on a user program break. Therefore, the stack area must accept two-word addresses. 15. Do not use an MCU that has been used for debugging. If the flash memory is rewritten many times, data may be lost due to retention problems after the emulator has been left for a few days and the data will be erased. If an error message is displayed, exchange the MCU for a new one.
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Section 5 Differences between the MCUs and the Emulator
16. Forced Break Function When the NMI# signal is used for a forced break in the emulator, the vector address of NMI# is rewritten by the emulator program. An error will occur if a file in the host computer and the flash memory contents are verified. Do not use the flash memory contents as the ROM data for the mask ROM after it has been saved. 17. Setting the Usage of the NMI# Signal In the [Configuration] dialog box, when the NMI# signal is changed as it is used in the user program, the vector address of NMI# is not recovered. Reload the user program. 18. Address Break Release Function When the address break function is not released for users, the vector address of address break is rewritten by the emulator program. An error will occur if a file in the host computer and the flash memory contents are verified. Do not use the flash memory contents as the ROM data for the mask ROM after it has been saved. 19. Initializing the Internal I/O Register with the Reset_CPU Function Be sure to initialize the internal I/O registers shown below by the user program since they are not initialized by selecting [Debug] - [Reset CPU] or using the RESET command. Table 5.3 Registers Not Initialized
MCU Name H8/3672F H8/36014F H8/36024F Register Not Initialized IEGR1, IEGR2, IENR1, IRR1, IWPR, MSTCR1 IEGR1, IEGR2, IENR1, IRR1, IRR2, IWPR, MSTCR1, MSTCR2
20. Step Execution of the SLEEP Instruction When the interrupt mask bit (I) in the condition code register (CCR) is 1, do not perform step execution of the SLEEP instruction. If the step execution is performed and not finished correctly, restart the emulator.
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Section 5 Differences between the MCUs and the Emulator
21. Items Set in the [Configuration] Dialog Box The emulator operation conditions are set in the [Configuration] dialog box.
Figure 5.4 [Configuration] Dialog Box ([System] Page)
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Section 5 Differences between the MCUs and the Emulator
Items that can be displayed in this dialog box are listed below.
[Device] combo box [Emulation mode] combo box Displays the MCU name. Selects the emulation mode at user program execution. Select Normal to perform normal emulation. Select No break to disable PC breakpoint or break condition settings during emulation. [Step option] combo box Sets the step interrupt option. Disable interrupts during single step execution: Disables interrupts during step execution. Enable interrupts during single step execution: Enables interrupts during step execution. [NMI signal] group box Sets the use of the NMI# signal. When used as a forced break in the emulator, select Emulator. In this case, the NMI# signal cannot be used. The contents of the NMI# vector address are rewritten by the emulator program. When used in the user program, select User. In this case, the forced break cannot be used. Before user program execution, set the breakpoints or break conditions for the exception processing and generate exceptions to halt the program. [User interface clock] combo box [Breakcondition mode] group box Displays the transfer clock of the user interface. Sets the address break release function. When the address break function is not used in the user program, select Emulator. In this case, the hardware break and step functions can be used. The contents of the vector address are rewritten by the emulator program to satisfy the break conditions. When the address break is used in the user program, select User. In this case, the hardware break and step functions cannot be used. [Flash memory synchronization] combo box Selects whether or not the contents of the flash memory are acquired by the emulator when the user program is stopped or the position where the PC break is set is put back as the original code. When the flash memory is not programmed by the user program, its contents need not be acquired by the emulator.
*1 *1
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Section 5 Differences between the MCUs and the Emulator
If there is no problem with the state that the program in the flash memory has been replaced as the PC break code, the position where the PC break is set needs not be put back as the original code. Disable: Read or program is not performed for the flash memory except when the emulator is activated, the flash memory area is modified, and the settings of the PC break to the flash memory area are changed. PC to flash memory: When the user program is stopped, the specified PC break code is replaced as the original instruction. Select this option if there is a problem with the state that the program in the flash memory has been replaced as the PC break code. Flash memory to PC: When the user program is stopped, the contents of the flash memory are read by the emulator. Select this option if the flash memory is reprogrammed by the user program. PC to flash memory, Flash memory to PC: When the user program is stopped, the contents of the flash memory are read by the emulator and the specified PC break code is replaced as the original instruction. Select this option if the flash memory is reprogrammed by the user program and there is a problem with the state that the program in the flash memory has been replaced as the PC break code. [Step Over option] combo box Enables or disables programming of the flash memory while executing step operation. Programming of the flash memory: Uses a software break for step operation (e.g. Step Over) and enables programming of the flash memory. No Programming of the flash memory: Uses Break Condition for step operation (e.g. Step Over) and disables programming of the *2 flash memory . [Flash memory write after download] group box Enables or disables programming of the flash memory after downloading the program. Disable: Disables programming of the flash memory after downloading the program. Enable: Enables programming of the flash memory after downloading the program.
Notes: 1. Includes interrupts in a break. 2. When Step Over is performed after selecting [No Programming of the flash memory] for [Step Over option], the instruction that follows a JSR, BSR, or TRAPA instruction will also be executed. If there are consecutive JSR, BSR, or TRAPA instructions,
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Section 5 Differences between the MCUs and the Emulator
execution proceeds until it reaches an instruction that is not JSR, BSR, or TRAPA. (When there are consecutive function calls in C language, the program steps all of these functions.) 22. Available MCUs for the Emulator The H8/36012F and H8/3670F are also available for the emulator. When the emulator is activated, set the MCU to be selected as shown in table 5.4. Note that, however, an error will not be displayed even if a program which is larger than the internal ROM capacity is downloaded. Table 5.4 List of Available MCUs
MCU to be Used H8/36012F H8/3670F MCU to be Selected H8/36014F H8/3672F
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Notes on Connecting the H8/36902F and H8/36912F
Notes on Connecting the H8/36902F and H8/36912F
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Notes on Connecting the H8/36902F and H8/36912F
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Section 1 Inside the E8a Emulator User's Manual
Section 1 Inside the E8a Emulator User's Manual
The E8a emulator (hereafter referred to as E8a emulator in this document) manual consists of two documents: the E8a User's Manual and the E8a Additional Document for User's Manual (this document). Be sure to read BOTH documents before using the E8a emulator. (1) E8a Emulator User's Manual The E8a Emulator User's Manual describes the hardware specifications and how to use the emulator debugger. E8a emulator hardware specifications Connecting the E8a emulator to the host computer or user system Operating the E8a emulator debugger Tutorial: From starting up the E8a emulator debugger to debugging (2) E8a Additional Document for User's Manual The E8a Additional Document for User's Manual describes content dependent on the MCUs and precautionary notes. Example of the E8a emulator connection or interface circuit necessary for designing the hardware Notes on using the E8a emulator Setting the E8a emulator debugger during startup
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Section 1 Inside the E8a Emulator User's Manual
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Section 2 Connecting the Emulator with the User System
Section 2 Connecting the Emulator with the User System
Before connecting an E8a emulator (hereafter referred to as emulator) with the user system, a connector must be installed in the user system so that an user system interface cable can be connected. When designing the user system, refer to the connector and recommended circuits shown in this manual. Before designing the user system, be sure to read the E8a emulator user's manual and the hardware manual for related MCUs. Table 2.1 shows the recommended connector for the emulator. Table 2.1 Recommended Connector
Type Number 2514-6002 Manufacturer 3M Limited Specifications 14-pin straight type
Connect pins 2, 4, 6, 10, 12, and 14 of the user system connector to GND firmly on the PCB. These pins are used as electrical GND and to monitor the connection of the user system connector. Note the pin assignments of the user system connector.
User system interface cable
User system connector
User system Pin 2
Pin 1
Figure 2.1 Connecting the User System Interface Cable to the User System
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Section 2 Connecting the Emulator with the User System
Notes:
1. 2. 3.
The pin number assignments of the 14-pin connector differ from those of the E10A-USB emulator; however, the physical location is the same. Do not place any components within 3 mm of the connector. When the emulator is used in the [Program Flash] mode, connect the emulator similarly to the user system.
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Section 3 Pin Assignments of the E8a Connector
Section 3 Pin Assignments of the E8a Connector
Figure 3.1 shows the pin assignments of the emulators connector.
Pin No. 1 Pin 1 mark Connector 2 3 4 5 6 7 8 9 10 Top view Pin 1 mark 11 12 13 14 MCU Signal E10T_2 Vss N.C. *2 Vss E10T_1 Vss NMI# *1 Vcc N.C. *2 Vss E10T_0 Vss RES# *1 Vss
Pin 2 Pin 1
Pin 14 Pin 13
Notes: 1. The symbol (#) means that the signal is active-low. 2. These pins are not used in the H8/300H Tiny series. Do not connect anything to these pins.
Figure 3.1 Pin Assignments of the Emulators Connector
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Section 3 Pin Assignments of the E8a Connector
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Section 4 Example of Emulator Connection
Section 4 Example of Emulator Connection
Figure 4.1 shows an example of emulator connection to the MCU.
Pulled-up at 4.7 k or more
Vcc Vcc
Vcc Vcc Vcc Vcc
NMI#
E10T_0 E10T_1 E10T_2
NMI#
E10T_0 E10T_1 E10T_2
MCU
Vcc
RES#
RES#
Vss
User system Connector 14 pins with a 2.54-mm pitch
Figure 4.1 Example of Emulator Connection
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Section 4 Example of Emulator Connection
Notes: 1. E10T_0 to E10T_2 pins are used by the emulator. Pull up and connect the emulator and MCU pins.
MCU User system connector Vcc 4.7 k Pins 1, 5, and 11
E10T_0 to E10T_2
Figure 4.2 Connection of Emulator and E10T_0 to E10T_2 Pins 2. The NMI# signal is used for forced break control by the emulator. Connect the emulator and MCU pins directly. In debugging without forced break control, change the mode with the High-performance Embedded Workshop. Then, when the user logic is connected with the open-collector output buffer, the NMI# pin can be used in the user system (however, at power-on, the NMI# pin is used by the emulator).
MCU Vcc 4.7 k Pin 7 NMI# pin
When connected directly: User system connector
When the NMI# pin is used (forced break cannot be used): Vcc User system connector User logic * 4.7 k MCU
Pin 7 *Open-collector output buffer
NMI# pin
Figure 4.3 Connection of Emulator and NMI# Pin
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Section 4 Example of Emulator Connection
3.
The RES# pin is used by the emulator. Create the following circuit by connecting the open-collector output buffer so that reset input can be accepted from the emulator.
Vcc MCU
User system connector Pin 13
RES# pin
Figure 4.4 Example of a Reset Circuit 4. Connect Vss and Vcc with the Vss and Vcc of the MCU, respectively (within the guaranteed range of the microcomputer). When the power-supply mode is used, the power is supplied to the user system. Check that the power consumption or voltage of the user system is within the available range of E8a and avoid a problem such as closing of the power-supply circuit. Connect nothing with N.C.
5.
WARNING
In the power-supply mode, connect the emulator after checking that the power-supply circuit on the user system is not closed or the pin number assignments of the user system connector is correct. Failure to do so will result in a FIRE HAZARD and will damage the host computer, the emulator, and the user system.
2. Figure 4.5 shows the interface circuit in the E8a emulator. Use this figure as a reference when determining the pull-up resistance value.
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Section 4 Example of Emulator Connection
User system connector Power-supply circuit (only used for the power-supply mode) Emulator control circuit 100 k x3 1 M 100 k Vcc 8
22
E10T_2
1
74LVC125B 22
E10T_0
11
74LVC125B 22 NMI#
7
74LVC125B Vcc 3.3 V
SN74LVC2T45 3.3 V Vcc 22 SN74LVC2T45 3.3 V Vcc 22 3.3 V 10 k SN74LVC2T45 2CS2462 10 k RES# 13 E10T_1 5
Notes: 1. This figure omits the test circuits and pin numbers 3, 4, 9, and 14 for the user connector that are not used when H8/Tiny series is connected. 2. The power of 74LVC125B is supplied from Vcc in the user connector (or in the power-supply circuit during power-supply mode).
Figure 4.5 Interface Circuit in the E8a Emulator (Reference)
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Section 5 Differences between the MCUs and the Emulator
Section 5 Differences between the MCUs (H8/36902F and H8/36912F) and the Emulator
This section describes the differences between the emulator and MCU operations. 1. [Emulator Setting] Dialog Box The [Emulator Setting] dialog box is provided for setting the items that need to be set when the emulator starts up (settings are saved in the session).
Figure 5.1 [Emulator Setting] Dialog Box
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Section 5 Differences between the MCUs and the Emulator
To keep the [Emulator Setting] dialog box closed next time the emulator is started, check "Do not show this dialog box again." at the bottom of the [Emulator Setting] dialog box. You can open the [Emulator Setting] dialog box using either one of the following methods: After the emulator gets started, select Menu - [Setup] -> [Emulator] -> [Emulator Setting...]. Start the emulator while holding down the Ctrl key. After the emulator gets started and an error occurred, restart the emulator. When you check "Do not show this dialog box again.", the emulator doesn't supply power to the user system. To use this check box, start the emulator after turning on the power. 2. Emulator Mode The selection of the device, the specification of the mode, and the setting of the power supply are done in the [Emulator mode] page of the [Emulator Setting] dialog box. Device Select the device name in use from the [Device] combo box. The following items are selected in the [Mode] group box. Modes * Erase Flash and Connect This mode is used when there is no emulator program in the flash memory of the target device. In this mode, data of the flash memory of the target device is erased when the emulator is activated. Select this item when the emulator is firstly activated, the version of the emulator's software is updated, or the ID code is changed. * Keep Flash and Connect This mode is used when there is an emulator program in the flash memory of the target device. Enter the ID code specified above (`Erase Flash and Connect'). If an incorrect code is entered, all the programs on the flash memory will be erased. Note: When the emulator gets started in this mode after selecting "Do not show this dialog box again.", the initial value of the ID code is `0E8a'. If you use the ID code other than the initial value, do not use "Do not show this dialog box again.".
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Section 5 Differences between the MCUs and the Emulator
* Program Flash This mode is used when the emulator is used for programming the flash memory. Debugging the program is disabled. To download the load module, register it in the workspace. Note: In the H8/Tiny or H8/Super Low Power device, the ID code is not entered in the Program Flash mode. Power Supply When [Power Target from emulator. (MAX 300mA)] is checked, power will be supplied to the user system up to 300 mA. Then select 3.3 V or 5.0 V according to the power voltage of the user system. 3. Emulator Activation and ID Code In the H8/Tiny- or H8/Super Low Power-series MCU, the [System Clock] and [ID Code] dialog boxes are set when the emulator is activated. Setting the system clock Enter the clock value input to the board in use. The initial value differs in each MCU.
Figure 5.2 [System Clock] Dialog Box Setting the ID code When the emulator is activated in the [Erase Flash and Connect] mode, enter any hexadecimal four-digit ID code to be set (except for H'FFFF). The initial value is H'0E8A. When the emulator is activated in the [Keep Flash and Connect] mode, enter the correct ID code. If an incorrect ID code is entered, all the contents of the flash memory will be erased. In this case, restart the emulator in the [Erase Flash and Connect] mode.
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Section 5 Differences between the MCUs and the Emulator
Figure 5.3 [ID Code] Dialog Box 4. When the emulator system is initiated, it initializes the general registers and part of the control registers as shown in table 5.1. Table 5.1 Register Initial Values at Emulator Power-On
Register PC ER0 to ER6 ER7 (SP) CCR Initial Value Reset vector value in the vector address table H'0000 H'FF80 H'80
5. Low-Power Mode During a user program break, the CPU operating frequency is forced to a system clock () for high-speed operation. 6. RES# Signal The MCU signals are only valid during user program execution started with clicking the GO or STEP-type button. During a user program break, the RES# signal is not sent to the MCUs. Note: Do not start user program execution or access the memory while control input signal (RES#) is being low. A TIMEOUT error will occur. 7. System Control Register In the emulator, the internal I/O registers can be accessed from the [IO] window. However, be careful when accessing the system control register. The emulator saves the register value of the system control register at a break and returns the value when the user program is executed. Since this is done during a break, do not rewrite the system control register in the [IO] window.
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Section 5 Differences between the MCUs and the Emulator
8. Memory Access during Emulation If the memory contents are referenced or modified during emulation, realtime emulation cannot be performed because the user program is temporarily halted. 9. The emulator communicates with the MCUs by using the NMI#, RES#, and E10T_2 to E10T_0 pins. These pins cannot be used, however, the NMI# pin can be used by changing the setting of the [NMI signal] group box in the [Configuration] dialog box. 10. Sum Data Displayed in the Program Flash Mode Sum data, which is displayed in the `Program Flash' mode, is a value that data in the whole ROM areas has been added by byte (including data in the dedicated ROM area for the emulator). 11. Note on Executing the User Program The set value is rewritten since the emulator uses flash memory and watchdog timer registers during programming (Go, Step In, Step Out, or Step Over) of the flash memory. 12. The power consumed by the MCU can reach several milliamperes. This is because the user power supply drives ICs to make the communication signal level match the user-system power-supply voltage. The power consumed rises little during user program execution since the emulator does not perform communication; it rises more during a break. 13. Program Area for the Emulator Do not access a part of areas in the flash memory or the internal RAM since the emulator program uses these areas. If the contents of the program area for the emulator are changed, the emulator will not operate normally. In this case, restart the emulator with the Erase Flash and Connect mode. Table 5.2 Program Area for the Emulator
MCU Name H8/36902F H8/36912F Program Area Flash memory: H'2000 to H'2FFF Internal RAM: H'F980 to H'FD7F Vector, etc.: H'0002 to H'0007, H'000E to H'000F, H'0018 to H'0019
14. The emulator uses a two-word stack pointer for values stored on a user program break. Therefore, the stack area must accept two-word addresses.
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Section 5 Differences between the MCUs and the Emulator
15. Do not use an MCU that has been used for debugging. If the flash memory is rewritten many times, data may be lost due to retention problems after the emulator has been left for a few days and the data will be erased. If an error message is displayed, exchange the MCU for a new one. 16. Forced Break Function When the NMI# signal is used for a forced break in the emulator, the vector address of NMI# is rewritten by the emulator program. An error will occur if a file in the host computer and the flash memory contents are verified. Do not use the flash memory contents as the ROM data for the mask ROM after it has been saved. 17. Setting the Usage of the NMI# Signal In the [Configuration] dialog box, when the NMI# signal is changed as it is used in the user program, the vector address of NMI# is not recovered. Reload the user program. 18. Address Break Release Function When the address break function is not released for users, the vector address of address break is rewritten by the emulator program. An error will occur if a file in the host computer and the flash memory contents are verified. Do not use the flash memory contents as the ROM data for the mask ROM after it has been saved. 19. Initializing the Internal I/O Register with the Reset_CPU Function Be sure to initialize the internal I/O registers shown below by the user program since they are not initialized by selecting [Debug] - [Reset CPU] or using the RESET command. Table 5.3 Registers Not Initialized
MCU Name H8/36902F H8/36912F Register Not Initialized IEGR1, IEGR2, IENR1, IENR2, IRR1, IRR2, IWPR, MSTCR1, MSTCR2
20. Step Execution of the SLEEP Instruction When the interrupt mask bit (I) in the condition code register (CCR) is 1, do not perform step execution of the SLEEP instruction. If the step execution is performed and not finished correctly, restart the emulator.
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Section 5 Differences between the MCUs and the Emulator
21. Processing at Emulator Activation When the emulator is activated, the watchdog timer is not active; the operation of the emulator differs from that of the MCU. 22. The H8/36902F and H8/36912F have an on-chip oscillator. If the flash memory area is rewritten during debugging, the on-chip oscillator will be used even if an external clock is in use. To use these devices, select 8 MHz as the frequency value when the emulator is being connected. 23. Items Set in the [Configuration] Dialog Box The emulator operation conditions are set in the [Configuration] dialog box.
Figure 5.4 [Configuration] Dialog Box ([System] Page)
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Section 5 Differences between the MCUs and the Emulator
Items that can be displayed in this dialog box are listed below.
[Device] combo box [Emulation mode] combo box Displays the MCU name. Selects the emulation mode at user program execution. Select Normal to perform normal emulation. Select No break to disable PC breakpoint or break condition settings during emulation. [Step option] combo box Sets the step interrupt option. Disable interrupts during single step execution: Disables *1 interrupts during step execution. Enable interrupts during single step execution: Enables *1 interrupts during step execution. [NMI signal] group box Sets the use of the NMI# signal. When used as a forced break in the emulator, select Emulator. In this case, the NMI# signal cannot be used. The contents of the NMI# vector address are rewritten by the emulator program. When used in the user program, select User. In this case, the forced break cannot be used. Before user program execution, set the breakpoints or break conditions for the exception processing and generate exceptions to halt the program. [User interface clock] combo box [Breakcondition mode] group box Displays the transfer clock of the user interface. Sets the address break release function. When the address break function is not used in the user program, select Emulator. In this case, the hardware break and step functions can be used. The contents of the vector address are rewritten by the emulator program to satisfy the break conditions. When the address break is used in the user program, select User. In this case, the hardware break and step functions cannot be used.
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Section 5 Differences between the MCUs and the Emulator
[Flash memory synchronization] combo box
Selects whether or not the contents of the flash memory are acquired by the emulator when the user program is stopped or the position where the PC break is set is put back as the original code. When the flash memory is not programmed by the user program, its contents need not be acquired by the emulator. If there is no problem with the state that the program in the flash memory has been replaced as the PC break code, the position where the PC break is set needs not be put back as the original code. Disable: Read or program is not performed for the flash memory except when the emulator is activated, the flash memory area is modified, and the settings of the PC break to the flash memory area are changed. PC to flash memory: When the user program is stopped, the specified PC break code is replaced as the original instruction. Select this option if there is a problem with the state that the program in the flash memory has been replaced as the PC break code. Flash memory to PC: When the user program is stopped, the contents of the flash memory are read by the emulator. Select this option if the flash memory is reprogrammed by the user program. PC to flash memory, Flash memory to PC: When the user program is stopped, the contents of the flash memory are read by the emulator and the specified PC break code is replaced as the original instruction. Select this option if the flash memory is reprogrammed by the user program and there is a problem with the state that the program in the flash memory has been replaced as the PC break code.
[Step Over option] combo box
Enables or disables programming of the flash memory while executing step operation. Programming of the flash memory: Uses a software break for step operation (e.g. Step Over) and enables programming of the flash memory. No Programming of the flash memory: Uses Break Condition for step operation (e.g. Step Over) and disables programming of *2 the flash memory .
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Section 5 Differences between the MCUs and the Emulator
[Flash memory write after download] group box
Enables or disables programming of the flash memory after downloading the program. Disable: Disables programming of the flash memory after downloading the program. Enable: Enables programming of the flash memory after downloading the program.
Notes: 1. Includes interrupts in a break. 2. When Step Over is performed after selecting [No Programming of the flash memory] for [Step Over option], the instruction that follows a JSR, BSR, or TRAPA instruction will also be executed. If there are consecutive JSR, BSR, or TRAPA instructions, execution proceeds until it reaches an instruction that is not JSR, BSR, or TRAPA. (When there are consecutive function calls in C language, the program steps all of these functions.)
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E8a Emulator Additional Document for User's Manual Notes on Connecting the H8/300H Tiny Series
Publication Date: Rev.1.00, August 3, 2009 Published by: Sales Strategic Planning Div. Renesas Technology Corp. Edited by: Customer Support Department Global Strategic Communication Div. Renesas Solutions Corp.
(c) 2009. Renesas Technology Corp., All rights reserved. Printed in Japan.
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E8a Emulator Additional Document for User's Manual Notes on Connecting the H8/300H Tiny Series

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