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| EN29LV400A EN29LV400A 4 Megabit (512K x 8-bit / 256K x 16-bit) Flash Memory Boot Sector Flash Memory, CMOS 3.0 Volt-only FEATURES * 3V, single power supply operation - Full voltage range: 2.7-3.6 volt read and write operations for battery-powered applications. - Regulated voltage range: 3.0-3.6 volt read and write operations for compatibility with high performance 3.3 volt microprocessors. * High performance - Access times as fast as 45 ns * Low power consumption (typical values at 5 MHz) - 7 mA typical active read current - 15 mA typical program/erase current - 1 A typical standby current (standard access time to active mode) * Flexible Sector Architecture: - One 16 K-byte, two 8 K-byte, one 32 K-byte, and seven 64 K-byte sectors (byte mode) - One 8 K-word, two 4 K-word, one 16 K-word and seven 32 K-word sectors (word mode) * Sector protection: - Hardware locking of sectors to prevent program or erase operations within individual sectors - Additionally, temporary Sector Unprotect allows code changes in previously locked sectors. * High performance program/erase speed - Byte/Word program time: 8s typical - Sector erase time: 500ms typical * JEDEC Standard Embedded Erase and Program Algorithms * JEDEC standard DATA# polling and toggle bits feature * Single Sector and Chip Erase * Sector Unprotect Mode * Erase Suspend / Resume modes: Read or program another Sector during Erase Suspend Mode * triple-metal double-poly triple-well CMOS Flash Technology * Low Vcc write inhibit < 2.5V * minimum 1,000K program/erase endurance cycle * Package Options - 48-pin TSOP (Type 1) - 48-ball 6mm x 8mm FBGA * Commercial and Industrial Temperature Range GENERAL DESCRIPTION The EN29LV400A is a 4-Megabit, electrically erasable, read/write non-volatile flash memory, organized as 524,288 bytes or 256,144 words. Any byte can be programmed typically in 8s. The EN29LV400A features 3.0V voltage read and write operation, with access times as fast as 45ns to eliminate the need for WAIT states in high-performance microprocessor systems. The EN29LV400A has separate Output Enable (OE#), Chip Enable (CE#), and Write Enable (WE#) controls, which eliminate bus contention issues. This device is designed to allow either single Sector or full chip erase operation, where each Sector can be individually protected against program/erase operations or temporarily unprotected to erase or program. The device can sustain a minimum of 100K program/erase cycles on each Sector. This Data Sheet may be revised by subsequent versions 1 or modifications due to changes in technical specifications. (c)2005 Eon Silicon Solution, Inc., www.essi.com.tw Rev. A, Issue Date: 2005/01/07 EN29LV400A CONNECTION DIAGRAMS A15 A14 A13 A12 A11 A10 A9 A8 NC NC WE# RESET# NC NC RY/BY# NC A17 A7 A6 A5 A4 A3 A2 A1 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 48 47 46 45 44 43 42 41 40 39 38 37 36 35 34 33 32 31 30 29 28 27 26 25 A16 BYTE# Vss DQ15/A-1 DQ7 DQ14 DQ6 DQ13 DQ5 DQ12 DQ4 Vcc DQ11 DQ3 DQ10 DQ2 DQ9 DQ1 DQ8 DQ0 OE# Vss CE# A0 Standard TSOP FBGA Top View, Balls Facing Down A6 B6 C6 D6 E6 F6 G6 H6 A13 A12 A14 A15 A16 BYTE# DQ15/A-1 Vss A5 B5 C5 D5 E5 F5 G5 H5 A9 A8 A10 A11 DQ7 DQ14 DQ13 DQ6 A4 B4 C4 D4 E4 F4 G4 H4 WE# RESET# NC NC DQ5 DQ12 Vcc DQ4 A3 B3 C3 D3 E3 F3 G3 H3 RY/BY# A2 NC B2 NC C2 NC D2 DQ2 E2 DQ10 F2 DQ11 G2 DQ3 H2 A7 A1 A17 B1 A6 C1 A5 D1 DQ0 E1 DQ8 F1 DQ9 G1 DQ1 H1 A3 A4 A2 A1 A0 CE# OE# Vss This Data Sheet may be revised by subsequent versions or modifications due to changes in technical specifications. 2 (c)2005 Eon Silicon Solution, Inc., www.essi.com.tw Rev. A, Issue Date: 2005/01/07 EN29LV400A TABLE 1. PIN DESCRIPTION Pin Name A0-A17 DQ0-DQ14 DQ15 / A-1 CE# OE# RESET# RY/BY# WE# Vcc Vss NC BYTE# Addresses 15 Data Inputs/Outputs DQ15 (data input/output, word mode), A-1 (LSB address input, byte mode) Chip Enable Output Enable Hardware Reset Pin Ready/Busy Output Write Enable Supply Voltage Ground Not Connected to anything Byte/Word Mode Function FIGURE 1. LOGIC DIAGRAM EN29LV400A A0 - A17 DQ0 - DQ15 (A-1) Reset# CE# OE# WE# Byte# RY/BY# This Data Sheet may be revised by subsequent versions or modifications due to changes in technical specifications. 3 (c)2005 Eon Silicon Solution, Inc., www.essi.com.tw Rev. A, Issue Date: 2005/01/07 EN29LV400A TABLE 2A. TOP BOOT BLOCK SECTOR ARCHITECTURE ADDRESS RANGE Sector (X16) 10 9 8 7 6 5 4 3 2 1 0 3E000h-3FFFFh 3D000h-3DFFFh 3C000h-3CFFFh 38000h-3BFFFh 30000h-37FFFh 28000h-2FFFFh 20000h-27FFFh 18000h-1FFFFh 10000h-17FFFh 08000h-0FFFFh 00000h-07FFFh SECTOR SIZE (Kbytes / Kwords) 16/8 8/4 8/4 32/16 64/32 64/32 64/32 64/32 64/32 64/32 64/32 A17 A16 A15 A14 A13 A12 (X8) 7C000h-7FFFFh 7A000h-7BFFFh 78000h-79FFFh 70000h - 77FFFh 60000h - 6FFFFh 50000h - 5FFFFh 40000h - 4FFFFh 30000h - 3FFFFh 20000h - 2FFFFh 10000h - 1FFFFh 00000h - 0FFFFh 1 1 1 1 1 1 1 0 0 0 0 1 1 1 1 1 0 0 1 1 0 0 1 1 1 1 0 1 0 1 0 1 0 1 1 1 0 X X X X X X X 1 0 0 X X X X X X X X X 1 0 X X X X X X X X This Data Sheet may be revised by subsequent versions or modifications due to changes in technical specifications. 4 (c)2005 Eon Silicon Solution, Inc., www.essi.com.tw Rev. A, Issue Date: 2005/01/07 EN29LV400A TABLE 2B. BOTTOM BOOT BLOCK SECTOR ARCHITECTURE ADDRESS RANGE Sector (X16) 10 9 8 7 6 5 4 3 2 1 0 38000h-3FFFFh 30000h-37FFFh 28000h-2FFFFh 20000h-27FFFh 18000h-1FFFFh 10000h-17FFFh 08000h-0FFFFh 04000h-07FFFh 03000h-03FFFh 02000h-02FFFh 00000h-01FFFh SECTOR SIZE (Kbytes/ Kwords) 64/32 64/32 64/32 64/32 64/32 64/32 64/32 32/16 8/4 8/4 16/8 A17 A16 A15 A14 A13 A12 (X8) 70000h -7FFFFh 60000h - 6FFFFh 50000h - 5FFFFh 40000h - 4FFFFh 30000h - 3FFFFh 20000h - 2FFFFh 10000h - 1FFFFh 08000h - 0FFFFh 06000h - 07FFFh 04000h - 05FFFh 00000h - 03FFFh 1 1 1 1 0 0 0 0 0 0 0 1 1 0 0 1 1 0 0 0 0 0 1 0 1 0 1 0 1 0 0 0 0 X X X X X X X 1 0 0 0 X X X X X X X X 1 1 0 X X X X X X X X 1 0 X This Data Sheet may be revised by subsequent versions or modifications due to changes in technical specifications. 5 (c)2005 Eon Silicon Solution, Inc., www.essi.com.tw Rev. A, Issue Date: 2005/01/07 EN29LV400A PRODUCT SELECTOR GUIDE Product Number Speed Option Regulated Voltage Range: Vcc=3.0-3.6 V Full Voltage Range: Vcc=2.7 - 3.6 V -45R 45 45 25 EN29LV400A -55R -70 55 55 30 70 70 30 -90 90 90 35 Max Access Time, ns (tacc) Max CE# Access, ns (tce) Max OE# Access, ns (toe) BLOCK DIAGRAM Vcc Vss RY/BY# Block Protect Switches DQ0-DQ15 (A-1) Erase Voltage Generator State Control Program Voltage Generator Chip Enable Output Enable Logic STB Input/Output Buffers WE# Command Register CE# OE# Data Latch Y-Decoder Address Latch STB Y-Gating Vcc Detector Timer X-Decoder Cell Matrix A0-A17 This Data Sheet may be revised by subsequent versions or modifications due to changes in technical specifications. 6 (c)2005 Eon Silicon Solution, Inc., www.essi.com.tw Rev. A, Issue Date: 2005/01/07 EN29LV400A TABLE 3. OPERATING MODES 4M FLASH USER MODE TABLE DQ8-DQ15 Byte# Byte# = VIH = VIL DOUT High-Z DIN High-Z High-Z High-Z High-Z High-Z High-Z High-Z High-Z High-Z Operation Read Write CMOS Standby TTL Standby Output Disable Hardware Reset Temporary Sector Unprotect CE# L L Vcc 0.3V H L X OE# L H X X H X WE# H L X X H X Reset# H H Vcc 0.3V H H L A0-A17 AIN AIN X X X X DQ0-DQ7 DOUT DIN High-Z High-Z High-Z High-Z X X X VID AIN DIN DIN X Notes: L=logic low= VIL, H=Logic High= VIH, VID =11 0.5V, X=Don't Care (either L or H, but not floating!), DIN=Data In, DOUT=Data Out, AIN=Address In TABLE 4. DEVICE IDENTIFICTION (Autoselect Codes) 4M FLASH MANUFACTURER/DEVICE ID TABLE Description Mode CE OE WE A17 to A12 X X X A11 to A10 X X X A92 A8 A7 A6 A5 to A2 X X X A1 A0 DQ8 to DQ15 X 22h X 22h X X L L H SA X VID X X L X H L X DQ7 to DQ0 1Ch B9h B9h BAh BAh 01h (Protected) Manufacturer ID: Eon Device ID Word (top boot block) L L L L L L L L L L H H H H H VID VID VID H1 X X X X X L L L L L L L H H Byte Word Byte Device ID (bottom boot block) Sector Protection Verification 00h (Unprotected) Note: 1. If a manufacturing ID is read with A8=L, the chip will output a configuration code 7Fh. A further Manufacturing ID must be read with A8=H. 2. A9 = VID is for HV A9 Autoselect mode only. A9 must be Vcc (CMOS logic level) for Command Autoselect Mode. This Data Sheet may be revised by subsequent versions or modifications due to changes in technical specifications. 7 (c)2005 Eon Silicon Solution, Inc., www.essi.com.tw Rev. A, Issue Date: 2005/01/07 EN29LV400A USER MODE DEFINITIONS Word / Byte Configuration The signal set on the BYTE# Pin controls whether the device data I/O pins DQ15-DQ0 operate in the byte or word configuration. When the Byte# Pin is set at logic `1', then the device is in word configuration, DQ15-DQ0 are active and are controlled by CE# and OE#. On the other hand, if the Byte# Pin is set at logic `0', then the device is in byte configuration, and only data I/O pins DQ0-DQ7 are active and controlled by CE# and OE#. The data I/O pins DQ8DQ14 are tri-stated, and the DQ15 pin is used as an input for the LSB (A-1) address function. Standby Mode The EN29LV400A has a CMOS-compatible standby mode, which reduces the current to < 1A (typical). It is placed in CMOS-compatible standby when the CE# pin is at VCC 0.5. RESET# and BYTE# pin must also be at CMOS input levels. The device also has a TTL-compatible standby mode, which reduces the maximum VCC current to < 1mA. It is placed in TTL-compatible standby when the CE# pin is at VIH. When in standby modes, the outputs are in a high-impedance state independent of the OE# input. Read Mode The device is automatically set to reading array data after device power-up. No commands are required to retrieve data. The device is also ready to read array data after completing an Embedded Program or Embedded Erase algorithm. After the device accepts an Erase Suspend command, the device enters the Erase Suspend mode. The system can read array data using the standard read timings, except that if it reads at an address within erase-suspended sectors, the device outputs status data. After completing a programming operation in the Erase Suspend mode, the system may once again read array data with the same exception. See "Erase Suspend/Erase Resume Commands" for more additional information. The system must issue the reset command to re-enable the device for reading array data if DQ5 goes high, or while in the autoselect mode. See the "Reset Command" additional details. Output Disable Mode When the OE# pin is at a logic high level (VIH), the output from the EN29LV400A is disabled. The output pins are placed in a high impedance state. Auto Select Identification Mode The autoselect mode provides manufacturer and device identification, and sector protection verification, through identifier codes output on DQ15-DQ0. This mode is primarily intended for programming equipment to automatically match a device to be programmed with its corresponding programming algorithm. However, the autoselect codes can also be accessed in-system through the command register. When using programming equipment, the autoselect mode requires VID (10.5V to 11.5 V) on address pin A9. Address pins A8, A6, A1, and A0 must be as shown in Autoselect Codes table. In addition, when verifying sector protection, the sector address must appear on the appropriate highest order address bits. Refer to the corresponding Sector Address Tables. The Command Definitions table shows the remaining address bits that are don't-care. When all necessary bits have been set as required, the programming equipment may then read the corresponding identifier code on DQ15-DQ0. This Data Sheet may be revised by subsequent versions or modifications due to changes in technical specifications. 8 (c)2005 Eon Silicon Solution, Inc., www.essi.com.tw Rev. A, Issue Date: 2005/01/07 EN29LV400A To access the autoselect codes in-system; the host system can issue the autoselect command via the command register, as shown in the Command Definitions table. This method does not require VID. See "Command Definitions" for details on using the autoselect mode. Write Mode Write operations, including programming data and erasing sectors of memory, require the host system to write a command or command sequence to the device. Write cycles are initiated by placing the byte or word address on the device's address inputs while the data to be written is input on DQ[7:0] in Byte Mode (BYTE# = L) or on DQ[15:0] in Word Mode (BYTE# = H). The host system must drive the CE# and WE# pins Low and the OE# pin high for a valid write operation to take place. All addresses are latched on the falling edge of WE# and CE#, whichever happens later. All data is latched on the rising edge of WE# or CE#, whichever happens first. The system is not required to provide further controls or timings. The device automatically provides internally generated program / erase pulses and verifies the programmed /erased cells' margin. The host system can detect completion of a program or erase operation by observing the RY/BY# pin, or by reading the DQ[7] (Data# Polling) and DQ[6] (Toggle) status bits. The `Command Definitions' section of this document provides details on the specific device commands implemented in the EN29LV400A. Sector Protection/Unprotection The hardware sector protection feature disables both program and erase operations in any sector. The hardware sector unprotection feature re-enables both program and erase operations in previously protected sectors. There are two methods to enabling this hardware protection circuitry. The first one requires only that the RESET# pin be at VID and then standard microprocessor timings can be used to enable or disable this feature. See Flowchart 7a and 7b for the algorithm and Figure 12 for the timings. When doing Sector Unprotect, all the other sectors should be protected first. The second method is meant for programming equipment. This method requires VID be applied to both OE# and A9 pin and non-standard microprocessor timings are used. This method is described in a separate document called EN29LV400A Supplement, which can be obtained by contacting a representative of Eon Silicon Devices, Inc. Temporary Sector Unprotect Start This feature allows temporary unprotection of previously protected sector groups to change data while in-system. The Sector Unprotect mode is activated by setting the RESET# pin to VID. During this mode, formerly protected sectors can be programmed or erased by simply selecting the sector addresses. Once is removed from the RESET# pin, all the previously protected sectors are protected again. See accompanying figure and timing diagrams for more details. Notes: 1. All protected sectors unprotected. 2. Previously protected sectors protected again. Reset#=VID (note 1) Perform Erase or Program Operations Reset#=VIH Temporary Sector Unprotect Completed (note 2) This Data Sheet may be revised by subsequent versions or modifications due to changes in technical specifications. 9 (c)2005 Eon Silicon Solution, Inc., www.essi.com.tw Rev. A, Issue Date: 2005/01/07 EN29LV400A Automatic Sleep Mode The automatic sleep mode minimizes Flash device energy consumption. The device automatically enables this mode when addresses remain stable for tacc + 30ns. The automatic sleep mode is independent of the CE#, WE# and OE# control signals. Standard address access timings provide new data when addresses are changed. While in sleep mode, output is latched and always available to the system. ICC4 in the DC Characteristics table represents the automatic sleep more current specification. Hardware Data Protection The command sequence requirement of unlock cycles for programming or erasing provides data protection against inadvertent writes as seen in the Command Definitions table. Additionally, the following hardware data protection measures prevent accidental erasure or programming, which might otherwise be caused by false system level signals during Vcc power up and power down transitions, or from system noise. Low VCC Write Inhibit When Vcc is less than VLKO, the device does not accept any write cycles. This protects data during Vcc power up and power down. The command register and all internal program/erase circuits are disabled, and the device resets. Subsequent writes are ignored until Vcc is greater than VLKO. The system must provide the proper signals to the control pins to prevent unintentional writes when Vcc is greater than VLKO. Write Pulse "Glitch" protection Noise pulses of less than 5 ns (typical) on OE#, CE# or WE# do not initiate a write cycle. Logical Inhibit Write cycles are inhibited by holding any one of OE# = VIL, CE# = VIH, or WE# = VIH. To initiate a write cycle, CE# and WE# must be a logical zero while OE# is a logical one. If CE#, WE#, and OE# are all logical zero (not recommended usage), it will be considered a read. Power-up Write Inhibit During power-up, the device automatically resets to READ mode and locks out write cycles. Even with CE# = VIL, WE# = VIL and OE# = VIH, the device will not accept commands on the rising edge of WE#. This Data Sheet may be revised by subsequent versions or modifications due to changes in technical specifications. 10 (c)2005 Eon Silicon Solution, Inc., www.essi.com.tw Rev. A, Issue Date: 2005/01/07 EN29LV400A COMMAND DEFINITIONS The operations of the EN29LV400A are selected by one or more commands written into the command register to perform Read/Reset Memory, Read ID, Read Sector Protection, Program, Sector Erase, Chip Erase, Erase Suspend and Erase Resume. Commands are made up of data sequences written at specific addresses via the command register. The sequences for the specified operation are defined in the Command Definitions table (Table 5). Incorrect addresses, incorrect data values or improper sequences will reset the device to Read Mode. Table 5. EN29LV400A Command Definitions Bus Cycles Command Sequence Read Reset Manufacturer ID Autoselect Device ID Top Boot Device ID Bottom Boot Sector Protect Verify Program Word 4 Byte Word Byte Word Byte Word 4 Byte 4 3 2 2 6 6 1 1 AAA 555 AAA 555 AAA XXX XXX 555 AAA 555 AAA xxx xxx AA AA A0 90 AA AA B0 30 4 4 AAA 555 AAA 555 AAA 555 AA 555 2AA 555 2AA 555 PA XXX 2AA 555 2AA 555 55 55 PD 00 55 55 555 AAA 555 AAA 80 80 555 AAA 555 AAA AA AA 2AA 555 2AA 555 55 55 555 AAA SA 10 30 AA AA Cycles 1 st 2 nd 3 rd 4 th 5 th 6 th Cycle Addr Data Cycle Addr Data Cycle Addr Data Cycle Addr Data Cycle Addr Data Cycle Addr Data 1 1 RA xxx 555 RD F0 2AA AA 555 2AA 555 2AA 555 2AA 55 55 55 AAA 555 AAA 555 AAA 555 55 AAA 555 AAA 555 AAA A0 20 90 90 90 555 90 200 X01 X02 X01 X02 (SA) X02 (SA) X04 PA 1C 22B9 B9 22BA BA XX00 XX01 00 01 PD 100 1C Word Byte Word Unlock Bypass Byte Unlock Bypass Program Unlock Bypass Reset Word Chip Erase Byte Word Sector Erase Byte Erase Suspend Erase Resume Address and Data values indicated in hex RA = Read Address: address of the memory location to be read. This is a read cycle. RD = Read Data: data read from location RA during Read operation. This is a read cycle. PA = Program Address: address of the memory location to be programmed. X = Don't-Care PD = Program Data: data to be programmed at location PA SA = Sector Address: address of the Sector to be erased or verified. Address bits A17-A12 uniquely select any Sector. Reading Array Data The device is automatically set to reading array data after power up. No commands are required to retrieve data. The device is also ready to read array data after completing an Embedded Program or Embedded Erase algorithm. Following an Erase Suspend command, Erase Suspend mode is entered. The system can read array data using the standard read timings, with the only difference in that if it reads at an address within erase suspended sectors, the device outputs status data. After completing a programming This Data Sheet may be revised by subsequent versions or modifications due to changes in technical specifications. (c)2005 Eon Silicon Solution, Inc., www.essi.com.tw 11 Rev. A, Issue Date: 2005/01/07 EN29LV400A operation in the Erase Suspend mode, the system may once again read array data with the same exception. The Reset command must be issued to re-enable the device for reading array data if DQ5 goes high, or while in the autoselect mode. See next section for details on Reset. Reset Command Writing the reset command to the device resets the device to reading array data. Address bits are don't-care for this command. The reset command may be written between the sequence cycles in an erase command sequence before erasing begins. This resets the device to reading array data. Once erasure begins, however, the device ignores reset commands until the operation is complete. The reset command may be written between the sequence cycles in a program command sequence before programming begins. This resets the device to reading array data (also applies to programming in Erase Suspend mode). Once programming begins, however, the device ignores reset commands until the operation is complete. The reset command may be written between the sequence cycles in an autoselect command sequence. Once in the autoselect mode, the reset command must be written to return to reading array data (also applies to autoselect during Erase Suspend). If DQ5 goes high during a program or erase operation, writing the reset command returns the device to reading array data (also applies during Erase Suspend). Autoselect Command Sequence The autoselect command sequence allows the host system to access the manufacturer and devices codes, and determine whether or not a sector is protected. The Command Definitions table shows the address and data requirements. This is an alternative to the method that requires VID on address bit A9 and is intended for PROM programmers. Two unlock cycles followed by the autoselect command initiate the autoselect command sequence. Autoselect mode is then entered and the system may read at addresses shown in Table 4 any number of times, without needing another command sequence. The system must write the reset command to exit the autoselect mode and return to reading array data. Word / Byte Programming Command The device may be programmed by byte or by word, depending on the state of the Byte# Pin. Programming the EN29LV400A is performed by using a four bus-cycle operation (two unlock write cycles followed by the Program Setup command and Program Data Write cycle). When the program command is executed, no additional CPU controls or timings are necessary. An internal timer terminates the program operation automatically. Address is latched on the falling edge of CE# or WE#, whichever is last; data is latched on the rising edge of CE# or WE#, whichever is first. Programming status may be checked by sampling data on DQ7 (DATA# polling) or on DQ6 (toggle bit). ). When the program operation is successfully completed, the device returns to read mode and the user can read the data programmed to the device at that address. Note that data can not be programmed from a 0 to a 1. Only an erase operation can change a data from 0 to 1. When programming time limit is exceeded, DQ5 will produce a logical "1" and a Reset command can return the device to Read mode. This Data Sheet may be revised by subsequent versions or modifications due to changes in technical specifications. 12 (c)2005 Eon Silicon Solution, Inc., www.essi.com.tw Rev. A, Issue Date: 2005/01/07 EN29LV400A Unlock Bypass To speed up programming operation, the Unlock Bypass Command may be used. Once this feature is activated, the shorter two cycle Unlock Bypass Program command can be used instead of the normal four cycle Program Command to program the device. This mode is exited after issuing the Unlock Bypass Reset Command. The device powers up with this feature disabled. Chip Erase Command Chip erase is a six-bus-cycle operation. The chip erase command sequence is initiated by writing two unlock cycles, followed by a set-up command. Two additional unlock write cycles are then followed by the chip erase command, which in turn invokes the Embedded Erase algorithm. The device does not require the system to preprogram prior to erase. The Embedded Erase algorithm automatically preprograms and verifies the entire memory for an all zero data pattern prior to electrical erase. The system is not required to provide any controls or timings during these operations. The Command Definitions table shows the address and data requirements for the chip erase command sequence. Any commands written to the chip during the Embedded Chip Erase algorithm are ignored. The system can determine the status of the erase operation by using DQ7, DQ6, or DQ2. See "Write Operation Status" for information on these status bits. When the Embedded Erase algorithm is complete, the device returns to reading array data and addresses are no longer latched. Flowchart 4 illustrates the algorithm for the erase operation. See the Erase/Program Operations tables in "AC Characteristics" for parameters, and to the Chip/Sector Erase Operation Timings for timing waveforms. Sector Erase Command Sequence Sector erase is a six bus cycle operation. The sector erase command sequence is initiated by writing two un-lock cycles, followed by a set-up command. Two additional unlock write cycles are then followed by the address of the sector to be erased, and the sector erase command. The Command Definitions table shows the address and data requirements for the sector erase command sequence. Once the sector erase operation has begun, only the Erase Suspend command is valid. All other commands are ignored. When the Embedded Erase algorithm is complete, the device returns to reading array data and addresses are no longer latched. The system can determine the status of the erase operation by using DQ7, DQ6, or DQ2. Refer to "Write Operation Status" for information on these status bits. Flowchart 4 illustrates the algorithm for the erase operation. Refer to the Erase/Program Operations tables in the "AC Characteristics" section for parameters, and to the Sector Erase Operations Timing diagram for timing waveforms. Erase Suspend / Resume Command The Erase Suspend command allows the system to interrupt a sector erase operation and then read data from, or program data to, any sector not selected for erasure. This command is valid only during the sector erase operation. The Erase Suspend command is ignored if written during the chip erase operation or Embedded Program algorithm. Addresses are don't-cares when writing the Erase Suspend command. This Data Sheet may be revised by subsequent versions or modifications due to changes in technical specifications. 13 (c)2005 Eon Silicon Solution, Inc., www.essi.com.tw Rev. A, Issue Date: 2005/01/07 EN29LV400A When the Erase Suspend command is written during a sector erase operation, the device requires a maximum of 20 s to suspend the erase operation. After the erase operation has been suspended, the system can read array data from or program data to any sector not selected for erasure. (The device "erase suspends" all sectors selected for erasure.) Normal read and write timings and command definitions apply. Reading at any address within erase-suspended sectors produces status data on DQ7-DQ0. The system can use DQ7, or DQ6 and DQ2 together, to determine if a sector is actively erasing or is erase-suspended. See "Write Operation Status" for information on these status bits. After an erase-suspended program operation is complete, the system can once again read array data within non-suspended sectors. The system can determine the status of the program operation using the DQ7 or DQ6 status bits, just as in the standard program operation. See "Write Operation Status" for more information. The Autoselect command is not supported during Erase Suspend Mode. The system must write the Erase Resume command (address bits are don't-care) to exit the erase suspend mode and continue the sector erase operation. Further writes of the Resume command are ignored. Another Erase Suspend command can be written after the device has resumed erasing. WRITE OPERATION STATUS DQ7: DATA# Polling The EN29LV400A provides DATA# polling on DQ7 to indicate the status of the embedded operations. The DATA# polling feature is active during the embedded Programming, Sector Erase, Chip Erase, and Erase Suspend. (See Table 6) When the embedded Programming is in progress, an attempt to read the device will produce the complement of the data written to DQ7. Upon the completion of the embedded Programming, an attempt to read the device will produce the true data written to DQ7. For the embedded Programming, DATA# polling is valid after the rising edge of the fourth WE# or CE# pulse in the four-cycle sequence. When the embedded Erase is in progress, an attempt to read the device will produce a "0" at the DQ7 output. Upon the completion of the embedded Erase, the device will produce the "1" at the DQ7 output during the read cycles. For Chip Erase, the DATA# polling is valid after the rising edge of the sixth WE# or CE# pulse in the six-cycle sequence. DATA# polling is valid after the last rising edge of WE# or CE# pulse for chip erase or sector erase. DATA# Polling must be performed at any address within a sector that is being programmed or erased and not a protected sector. Otherwise, DATA# polling may give an inaccurate result if the address used is in a protected sector. Just prior to the completion of the embedded operations, DQ7 may change asynchronously when the output enable (OE#) is low. This means that the device is driving status information on DQ7 at one instant of time and valid data at the next instant of time. Depending on when the system samples the DQ7 output, it may read the status of valid data. Even if the device has completed the embedded operations and DQ7 has a valid data, the data output on DQ0-DQ6 may be still invalid. The valid data on DQ0-DQ7 will be read on the subsequent read attempts. The flowchart for DATA# polling (DQ7) is shown on Flowchart 5. The DATA# polling (DQ7) timing diagram is shown in Figure 8. This Data Sheet may be revised by subsequent versions or modifications due to changes in technical specifications. 14 (c)2005 Eon Silicon Solution, Inc., www.essi.com.tw Rev. A, Issue Date: 2005/01/07 EN29LV400A RY/BY#: Ready/Busy Status output The RY/BY# is a dedicated, open-drain output pin that indicates whether an Embedded Algorithm is in progress or completed. The RY/BY# status is valid after the rising edge of the final WE# pulse in the command sequence. Since RY/BY# is an open-drain output, several RY/BY# pins can be tied together in parallel with a pull-up resistor to Vcc. In the output-low period, signifying Busy, the device is actively erasing or programming. This includes programming in the Erase Suspend mode. If the output is high, signifying the Ready, the device is ready to read array data (including during the Erase Suspend mode), or is in the standby mode. DQ6: Toggle Bit I The EN29LV400A provides a "Toggle Bit" on DQ6 to indicate the status of the embedded programming and erase operations. (See Table 6) During an embedded Program or Erase operation, successive attempts to read data from the device at any address (by active OE# and CE#) will result in DQ6 toggling between "zero" and "one". Once the embedded Program or Erase operation is completed, DQ6 will stop toggling and valid data will be read on the next successive attempts. During embedded Programming, the Toggle Bit is valid after the rising edge of the fourth WE# pulse in the four-cycle sequence. During Erase operation, the Toggle Bit is valid after the rising edge of the sixth WE# pulse for sector erase or chip erase. In embedded Programming, if the sector being written to is protected, DQ6 will toggles for about 2 s, then stop toggling without the data in the sector having changed. In Sector Erase or Chip Erase, if all selected sectors are protected, DQ6 will toggle for about 100 s. The chip will then return to the read mode without changing data in all protected sectors. The flowchart for the Toggle Bit (DQ6) is shown in Flowchart 6. The Toggle Bit timing diagram is shown in Figure 9. DQ5: Exceeded Timing Limits DQ5 indicates whether the program or erase time has exceeded a specified internal pulse count limit. Under these conditions DQ5 produces a "1." This is a failure condition that indicates the program or erase cycle was not successfully completed. Since it is possible that DQ5 can become a 1 when the device has successfully completed its operation and has returned to read mode, the user must check again to see if the DQ6 is toggling after detecting a "1" on DQ5. The DQ5 failure condition may appear if the system tries to program a "1" to a location that is previously programmed to "0." Only an erase operation can change a "0" back to a "1." Under this condition, the device halts the operation, and when the operation has exceeded the timing limits, DQ5 produces a "1." Under both these conditions, the system must issue the reset command to return the device to reading array data. DQ3: Sector Erase Timer After writing a sector erase command sequence, the output on DQ3 can be used to determine whether or not an erase operation has begun. (The sector erase timer does not apply to the chip erase command.) When sector erase starts, DQ3 switches from "0" to "1." This device does not support multiple sector erase command sequences so it is not very meaningful since it immediately shows as a "1" after the first 30h command. Future devices may support this feature. DQ2: Erase Toggle Bit II This Data Sheet may be revised by subsequent versions or modifications due to changes in technical specifications. 15 (c)2005 Eon Silicon Solution, Inc., www.essi.com.tw Rev. A, Issue Date: 2005/01/07 EN29LV400A The "Toggle Bit" on DQ2, when used with DQ6, indicates whether a particular sector is actively erasing (that is, the Embedded Erase algorithm is in progress), or whether that sector is erasesuspended. Toggle Bit II is valid after the rising edge of the final WE# pulse in the command sequence. DQ2 toggles when the system reads at addresses within those sectors that have been selected for erasure. (The system may use either OE# or CE# to control the read cycles.) But DQ2 cannot distinguish whether the sector is actively erasing or is erase-suspended. DQ6, by comparison, indicates whether the device is actively erasing, or is in Erase Suspend, but cannot distinguish which sectors are selected for erasure. Thus, both status bits are required for sector and mode information. Refer to the following table to compare outputs for DQ2 and DQ6. Flowchart 6 shows the toggle bit algorithm, and the section "DQ2: Toggle Bit" explains the algorithm. See also the "DQ6: Toggle Bit I" subsection. Refer to the Toggle Bit Timings figure for the toggle bit timing diagram. The DQ2 vs. DQ6 figure shows the differences between DQ2 and DQ6 in graphical form. Reading Toggle Bits DQ6/DQ2 Refer to Flowchart 6 for the following discussion. Whenever the system initially begins reading toggle bit status, it must read DQ7-DQ0 at least twice in a row to determine whether a toggle bit is toggling. Typically, a system would note and store the value of the toggle bit after the first read. After the second read, the system would compare the new value of the toggle bit with the first. If the toggle bit is not toggling, the device has completed the program or erase operation. The system can read array data on DQ7-DQ0 on the following read cycle. However, if after the initial two read cycles, the system determines that the toggle bit is still toggling, the system also should note whether the value of DQ5 is high (see the section on DQ5). If it is, the system should then determine again whether the toggle bit is toggling, since the toggle bit may have stopped toggling just as DQ5 went high. If the toggle bit is no longer toggling, the device has successfully completed the program or erase operation. If it is still toggling, the device did not complete the operation successfully, and the system must write the reset command to return to reading array data. The remaining scenario is that the system initially determines that the toggle bit is toggling and DQ5 has not gone high. The system may continue to monitor the toggle bit and DQ5 through successive read cycles, determining the status as described in the previous paragraph. Alternatively, it may choose to perform other system tasks. In this case, the system must start at the beginning of the algorithm when it returns to determine the status of the operation (top of Flowchart 6). Write Operation Status Operation Standard Mode Embedded Program Algorithm Embedded Erase Algorithm Reading within Erase Suspended Sector Reading within Non-Erase Suspended Sector Erase-Suspend Program DQ7 DQ7# 0 1 Data DQ7# DQ6 Toggle Toggle No Toggle Data Toggle DQ5 0 0 0 Data 0 DQ3 N/A 1 N/A Data N/A DQ2 No toggle Toggle Toggle Data N/A RY/BY# 0 0 1 1 0 Erase Suspend Mode This Data Sheet may be revised by subsequent versions or modifications due to changes in technical specifications. 16 (c)2005 Eon Silicon Solution, Inc., www.essi.com.tw Rev. A, Issue Date: 2005/01/07 EN29LV400A Table 6. Status Register Bits DQ Name Logic Level `1' `0' 7 Definition Erase Complete or erase Sector in Erase suspend Erase On-Going Program Complete or data of non-erase Sector during Erase Suspend Program On-Going Erase or Program On-going Read during Erase Suspend Erase Complete Program or Erase Error Program or Erase On-going Erase operation start Erase timeout period on-going Chip Erase, Erase or Erase suspend on currently addressed Sector. (When DQ5=1, Erase Error due to currently addressed Sector. Program during Erase Suspend ongoing at current address Erase Suspend read on non Erase Suspend Sector DATA# POLLING DQ7 DQ7# `-1-0-1-0-1-0-1-' DQ6 `-1-1-1-1-1-1-1-` 6 TOGGLE BIT 5 3 ERROR BIT ERASE TIME BIT `1' `0' `1' `0' 2 TOGGLE BIT `-1-0-1-0-1-0-1-' DQ2 Notes: DQ7 DATA# Polling: indicates the P/E C status check during Program or Erase, and on completion before checking bits DQ5 for Program or Erase Success. DQ6 Toggle Bit: remains at constant level when P/E operations are complete or erase suspend is acknowledged. Successive reads output complementary data on DQ6 while programming or Erase operation are on-going. DQ5 Error Bit: set to "1" if failure in programming or erase DQ3 Sector Erase Command Timeout Bit: Operation has started. Only possible command is Erase suspend (ES). DQ2 Toggle Bit: indicates the Erase status and allows identification of the erased Sector. This Data Sheet may be revised by subsequent versions or modifications due to changes in technical specifications. 17 (c)2005 Eon Silicon Solution, Inc., www.essi.com.tw Rev. A, Issue Date: 2005/01/07 EN29LV400A EMBEDDED ALGORITHMS Flowchart 1. Embedded Program START Write Program Command Sequence (shown below) Data# Poll Device Verify Data? Increment Address No Last Address? Yes Programming Done Flowchart 2. Embedded Program Command Sequence See the Command Definitions section for more information on WORD mode. 555H / AAH 2AAH / 55H 555H / A0H PROGRAM ADDRESS / PROGRAM DATA This Data Sheet may be revised by subsequent versions or modifications due to changes in technical specifications. 18 (c)2005 Eon Silicon Solution, Inc., www.essi.com.tw Rev. A, Issue Date: 2005/01/07 EN29LV400A Flowchart 3. Embedded Erase START Write Erase Command Sequence Data Poll from System or Toggle Bit successfully completed Data =FFh? No Yes Erase Done Flowchart 4. Embedded Erase Command Sequence See the Command Definitions section for more information on WORD mode. Chip Erase Sector Erase 555H/AAH 555H/AAH 2AAH/55H 2AAH/55H 555H/80H 555H/80H 555H/AAH 555H/AAH 2AAH/55H 2AAH/55H 555H/10H Sector Address/30H This Data Sheet may be revised by subsequent versions or modifications due to changes in technical specifications. 19 (c)2005 Eon Silicon Solution, Inc., www.essi.com.tw Rev. A, Issue Date: 2005/01/07 EN29LV400A Flowchart 5. DATA# Polling Algorithm Start Read Data DQ7 = Data? No No DQ5 = 1? Yes Read Data (1) Yes Notes: (1) This second read is necessary in case the first read was done at the exact instant when the status data was in transition. Yes DQ7 = Data? No Fail Pass Flowchart 6. Toggle Bit Algorithm Start Read Data twice No DQ6 = Toggle? Yes No DQ5 = 1? Yes Read Data twice (2) Notes: (2) This second set of reads is necessary in case the first set of reads was done at the exact instant when the status data was in transition. No DQ6 = Toggle? Yes Fail Pass This Data Sheet may be revised by subsequent versions or modifications due to changes in technical specifications. 20 (c)2005 Eon Silicon Solution, Inc., www.essi.com.tw Rev. A, Issue Date: 2005/01/07 EN29LV400A Flowchart 7a. In-System Sector Protect Flowchart START PLSCNT = 1 RESET# = VID Wait 1 s No Temporary Sector Unprotect Mode First Write Cycle = 60h? Yes Set up sector address Sector Protect: Write 60h to sector addr with A6 = 0, A1 = 1, A0 = 0 Wait 150 s Increment PLSCNT Verify Sector Protect: Write 40h to sector address with A6 = 0, A1 = 1, A0 = 0 Wait 0.4 s Reset PLSCNT = 1 No No Read from sector address with A6 = 0, A1 = 1, A0 PLSCNT = 25? Data = 01h? Yes Yes Device failed Protect another sector? No Remove VID from RESET# Write reset command Yes Sector Protect Algorithm This Data Sheet may be revised by subsequent versions or modifications due to changes in technical specifications. Sector Protect complete 21 (c)2005 Eon Silicon Solution, Inc., www.essi.com.tw Rev. A, Issue Date: 2005/01/07 EN29LV400A Flowchart 7b. In-System Sector Unprotect Flowchart START PLSCNT = 1 Protect all sectors: The indicated portion of the sector protect algorithm must be performed for all unprotected sectors prior to issuing the first sector unprotect address (see Diagram 7a.) RESET# = VID Wait 1 S No First Write Cycle = 60h? Yes No All sectors protected? Yes Set up first sector address Sector Unprotect: Write 60H to sector address with A6 = 1, A1 = 1, A0 = 0 Temporary Sector Unprotect Mode Wait 15 ms Increment PLSCNT Verify Sector Unprotect: Write 40h to sector address with A6 = 1, A1 = 1, A0 =0 Wait 0.4 S No Read from sector address with A6 = 1, A1 = 1, A0 = 0 PLSCCNT = 1000? No Data = 00h? Yes Set up next sector address Sector Unprotect Algorithm Yes Device failed Last sector verified? Yes Remove VID from RESET# No Write reset command Sector Unprotect complete This Data Sheet may be revised by subsequent versions or modifications due to changes in technical specifications. 22 (c)2005 Eon Silicon Solution, Inc., www.essi.com.tw Rev. A, Issue Date: 2005/01/07 EN29LV400A Table 7. DC Characteristics (Ta = 0C to 70C or - 40C to 85C; VCC = 2.7-3.6V) Symbol Parameter Test Conditions Min Typ Max Unit ILI ILO ICC1 Input Leakage Current Output Leakage Current Supply Current (read) TTL (read) CMOS Byte (read) CMOS Word Supply Current (Standby - TTL) 0V VIN Vcc 0V VOUT Vcc 8 CE# = VIL; OE# = VIH; f = 5MHz CE# = VIH, BYTE# = RESET# = Vcc 0.3V (Note 1) CE# = BYTE# = RESET# = Vcc 0.3V (Note 1) Byte program, Sector or Chip Erase in progress VIH = Vcc 0.3 V VIL = Vss 0.3 V -0.5 0.7 x Vcc IOL = 4.0 mA IOH = -2.0 mA IOH = -100 A, 0.85 x Vcc Vcc 0.4V 10.5 6 7 0.4 1 1 14 12 12 1.0 A A mA mA mA mA ICC2 Supply Current (Standby - CMOS) ICC3 ICC4 VIL VIH VOL VOH Output High Voltage CMOS VID IID VLKO A9 Voltage (Electronic Signature) A9 Current (Electronic Signature) Supply voltage (Erase and Program lock-out) 1 15 1 5.0 30 5.0 0.8 Vcc 0.3 0.45 A mA A V V V V V Supply Current (Program or Erase) Automatic Sleep Mode Input Low Voltage Input High Voltage Output Low Voltage Output High Voltage TTL 11.5 100 V A V A9 = VID 2.3 2.5 Notes 1. BYTE# pin can also be GND 0.3V. BYTE# and RESET# pin input buffers are always enabled so that they draw power if not at full CMOS supply voltages. This Data Sheet may be revised by subsequent versions or modifications due to changes in technical specifications. 23 (c)2005 Eon Silicon Solution, Inc., www.essi.com.tw Rev. A, Issue Date: 2005/01/07 EN29LV400A Test Conditions 3.3 V 2.7 k Device Under Test CL 6.2 k Note: Diodes are IN3064 or equivalent Test Specifications Test Conditions Output Load Output Load Capacitance, CL Input Rise and Fall times Input Pulse Levels Input timing measurement reference levels Output timing measurement reference levels 30 5 0.0-3.0 1.5 1.5 -45R -55R 30 5 0.0-3.0 1.5 1.5 -70 30 5 0.0-3.0 1.5 1.5 -90 100 5 0.0-3.0 1.5 1.5 Unit pF ns V V V 1 TTL Gate This Data Sheet may be revised by subsequent versions or modifications due to changes in technical specifications. 24 (c)2005 Eon Silicon Solution, Inc., www.essi.com.tw Rev. A, Issue Date: 2005/01/07 EN29LV400A AC CHARACTERISTICS Hardware Reset (Reset#) Parameter Std tREADY tREADY tRP tRH Description Reset# Pin Low to Read or Write Embedded Algorithms Reset# Pin Low to Read or Write Non Embedded Algorithms Reset# Pulse Width Reset# High Time Before Read Test Setup Max Max Min Min Speed options -55R -70 20 500 500 50 Unit -90 s nS nS nS -45R Reset# Timings RY/BY# 0V CE# OE# tRH RESET# tRP tREADY Reset Timings NOT During Automatic Algorithms RY/BY# tREADY CE# OE# RESET# tRP tRH Reset Timings During Automatic Algorithms This Data Sheet may be revised by subsequent versions or modifications due to changes in technical specifications. 25 (c)2005 Eon Silicon Solution, Inc., www.essi.com.tw Rev. A, Issue Date: 2005/01/07 EN29LV400A AC CHARACTERISTICS Word / Byte Configuration (Byte#) Std Parameter tBCS tCBH tRBH Speed Description Byte# to CE# switching setup time CE# to Byte# switching hold time RY/BY# to Byte# switching hold time Min Min Min -45R 0 0 0 -55R 0 0 0 -70 0 0 0 -90 0 0 0 Unit ns ns ns CE# OE# Byte# tBCS tCBH Byte# timings for Read Operations CE# WE# Byte# tRBH tBCS RY/BY# Byte# timings for Write Operations Note: Switching BYTE# pin not allowed during embedded operations This Data Sheet may be revised by subsequent versions or modifications due to changes in technical specifications. 26 (c)2005 Eon Silicon Solution, Inc., www.essi.com.tw Rev. A, Issue Date: 2005/01/07 EN29LV400A Table 8. AC CHARACTERISTICS Read-only Operations Characteristics Parameter Symbols JEDEC Standard Speed Options -45R 45 -55R 55 -70 70 -90 90 Unit ns Description Test Setup tAVAV tAVQV tELQV tGLQV tEHQZ tGHQZ tAXQX tRC tACC tCE tOE tDF tDF tOH Read Cycle Time Address to Output Delay Chip Enable To Output Delay Output Enable to Output Delay Chip Enable to Output High Z Output Enable to Output High Z Output Hold Time from Addresses, CE# or OE#, whichever occurs first CE# = VIL OE#= VIL OE#= VIL Min Max Max Max Max Max Min 45 45 25 10 10 0 55 55 30 15 15 0 70 70 30 20 20 0 90 90 35 20 20 0 ns ns ns ns ns ns Notes: For -45R,-55R,70 Vcc = 3.0V 5% Output Load : 1 TTL gate and 30pF Input Rise and Fall Times: 5ns Input Rise Levels: 0.0 V to Vcc Timing Measurement Reference Level, Input and Output: 1.5 V Vcc = 3.0V 5% Output Load: 1 TTL gate and 100 pF Input Rise and Fall Times: 5 ns Input Pulse Levels: 0.0 V to Vcc Timing Measurement Reference Level, Input and Output: 1.5 V For all others: tRC Addresses Addresses Stable tACC CE# tDF tOE tOEH OE# WE# tCE Output Valid tOH HIGH Z Outputs Reset# RY/BY# 0V Figure 5. AC Waveforms for READ Operations This Data Sheet may be revised by subsequent versions or modifications due to changes in technical specifications. 27 (c)2005 Eon Silicon Solution, Inc., www.essi.com.tw Rev. A, Issue Date: 2005/01/07 EN29LV400A Table 9. AC CHARACTERISTICS Write (Erase/Program) Operations Parameter Symbols JEDEC Standard Description -45R Speed Options -55R -70 -90 Unit tAVAV tAVWL tWLAX tDVWH tWHDX tWC tAS tAH tDS tDH tOES tOEH Write Cycle Time Address Setup Time Address Hold Time Data Setup Time Data Hold Time Output Enable Setup Time Output Enable Hold Time Read Toggle and Data# Polling Read Recovery Time before Write (OE# High to WE# Low) CE# SetupTime CE# Hold Time Write Pulse Width Write Pulse Width High Programming Operation (Word AND Byte Mode) Min Min Min Min Min Min MIn Min Min Min Min Min Min Typ Max 45 0 35 20 0 0 0 10 0 0 0 25 20 8 300 0.5 50 500 55 0 45 25 0 0 0 10 0 0 0 30 20 8 300 0.5 50 500 70 0 45 30 0 0 0 10 0 0 0 35 20 8 300 0.5 50 500 90 0 45 45 0 0 0 10 0 0 0 45 20 8 300 0.5 50 500 ns ns ns ns ns ns ns ns ns ns ns ns ns s s s s ns tGHWL tELWL tWHEH tWLWH tWHDL tWHWH1 tWHWH2 tGHWL tCS tCH tWP tWPH tWHWH1 tWHWH2 tVCS tVIDR Sector Erase Operation Vcc Setup Time Rise Time to VID Typ Min Min This Data Sheet may be revised by subsequent versions or modifications due to changes in technical specifications. 28 (c)2005 Eon Silicon Solution, Inc., www.essi.com.tw Rev. A, Issue Date: 2005/01/07 EN29LV400A Table 10. AC CHARACTERISTICS Write (Erase/Program) Operations Alternate CE# Controlled Writes Parameter Symbols JEDEC Standard Speed Options Description -45R -55R -70 -90 Unit tAVAV tAVEL tELAX tDVEH tEHDX tWC tAS tAH tDS tDH tOES tOEH Write Cycle Time Address Setup Time Address Hold Time Data Setup Time Data Hold Time Output Enable Setup Time Output Enable Hold Time Read Toggle and Data# Polling Read Recovery Time before Write ( OE High to CE Low) WE# SetupTime WE# Hold Time Write Pulse Width Write Pulse Width High Programming Operation (byte AND word mode) Sector Erase Operation Vcc Setup Time Rise Time to VID Min Min Min Min Min Min Min Min Min Min Min Min Min Typ Max Typ Min Min 45 0 35 20 0 0 0 10 0 0 0 25 20 8 300 0.5 50 500 55 0 45 25 0 0 0 10 0 0 0 30 20 8 300 0.5 50 500 70 0 45 30 0 0 0 10 0 0 0 35 20 8 300 0.5 50 500 90 0 45 45 0 0 0 10 0 0 0 45 20 8 300 0.5 50 500 ns ns ns ns ns ns ns ns ns ns ns ns ns s s s s ns tGHEL tWLEL tEHWH tELEH tEHEL tGHEL tWS tWH tCP tCPH tWHWH1 tWHWH1 tWHWH2 tWHWH2 tVCS tVIDR This Data Sheet may be revised by subsequent versions or modifications due to changes in technical specifications. 29 (c)2005 Eon Silicon Solution, Inc., www.essi.com.tw Rev. A, Issue Date: 2005/01/07 EN29LV400A Table 11. ERASE AND PROGRAMMING PERFORMANCE Parameter Typ Limits Max Unit Comments Sector Erase Time Chip Erase Time Byte Programming Time Word Programming Time Chip Programming Time Byte Word 0.5 5 8 8 4.2 2.1 100K 10 100 300 300 12.6 sec sec s s sec Excludes 00H programming prior to erasure Excludes system level overhead 6.3 cycles Minimum 100K cycles Erase/Program Endurance Table 12. LATCH UP CHARACTERISTICS Parameter Description Min Max Input voltage with respect to Vss on all pins except I/O pins (including A9, Reset and OE#) Input voltage with respect to Vss on all I/O Pins Vcc Current -1.0 V -1.0 V -100 mA 12.0 V Vcc + 1.0 V 100 mA Note : These are latch up characteristics and the device should never be put under these conditions. Refer to Absolute Maximum ratings for the actual operating limits. Table 13. TSOP PIN CAPACITANCE @ 25C, 1.0MHz Parameter Symbol Parameter Description Test Setup Typ Max Unit CIN COUT CIN2 Input Capacitance Output Capacitance Control Pin Capacitance VIN = 0 VOUT = 0 VIN = 0 7.5 8 9.5 9 10 12.5 pF pF pF Table 14. DATA RETENTION Parameter Description Test Conditions Min Unit 150C Minimum Pattern Data Retention Time 125C 10 20 Years Years This Data Sheet may be revised by subsequent versions or modifications due to changes in technical specifications. 30 (c)2005 Eon Silicon Solution, Inc., www.essi.com.tw Rev. A, Issue Date: 2005/01/07 EN29LV400A AC CHARACTERISTICS Figure 6. AC Waveforms for Chip/Sector Erase Operations Timings Erase Command Sequence (last 2 cycles) tWC tAS tAH Read Status Data (last two cycles) Addresses 0x2AA SA 0x555 for chip erase VA VA CE# tGHWL OE# tWP tCH WE# tCS tWPH tWHWH2 or tWHWH3 Data 0x55 tDS 0x30 Status DOUT tDH tBUSY tRB RY/BY# VCC tVCS Notes: 1. SA=Sector Address (for sector erase), VA=Valid Address for reading status, Dout=true data at read address. 2. Vcc shown only to illustrate tvcs measurement references. It cannot occur as shown during a valid command sequence. This Data Sheet may be revised by subsequent versions or modifications due to changes in technical specifications. 31 (c)2005 Eon Silicon Solution, Inc., www.essi.com.tw Rev. A, Issue Date: 2005/01/07 EN29LV400A Figure 7. Program Operation Timings Program Command Sequence (last 2 cycles) tWC tAS tAH Program Command Sequence (last 2 cycles) Addresses 0x555 PA PA PA CE# tGHWL OE# tWP tCH WE# tCS tWPH tWHWH1 Data tDS OxA0 PD Status DOUT tRB tDH tBUSY RY/BY# tVCS VCC Notes: 1. PA=Program Address, PD=Program Data, DOUT is the true data at the program address. 2. VCC shown in order to illustrate tVCS measurement references. It cannot occur as shown during a valid command sequence. This Data Sheet may be revised by subsequent versions or modifications due to changes in technical specifications. 32 (c)2005 Eon Silicon Solution, Inc., www.essi.com.tw Rev. A, Issue Date: 2005/01/07 EN29LV400A Figure 8. AC Waveforms for DATA# Polling During Embedded Algorithm Operations tRC Addresses tCH VA tACC tCE VA VA CE# tOE OE# tOEH tDF WE# tOH DQ[7] Complement Complement True Valid Data DQ[6:0] tBUSY Status Data Status Data True Valid Data RY/BY# Notes: 1. VA=Valid Address for reading Data# Polling status data 2. This diagram shows the first status cycle after the command sequence, the last status read cycle and the array data read cycle. Figure 9. AC Waveforms for Toggle Bit During Embedded Algorithm Operations tRC Addresses tCH VA tACC tCE VA VA VA CE# tOE OE# tOEH tDF WE# tOH DQ6, DQ2 tBUSY Valid Status (first read) Valid Status (second d) Valid Status (stops toggling) Valid Data RY/BY# This Data Sheet may be revised by subsequent versions or modifications due to changes in technical specifications. 33 (c)2005 Eon Silicon Solution, Inc., www.essi.com.tw Rev. A, Issue Date: 2005/01/07 EN29LV400A Figure 10. Alternate CE# Controlled Write Operation Timings 0x555 for Program 0x2AA for Erase PA for Program SA for Sector Erase 0x555 for Chip Erase Addresses tWC WE# tGHEL OE# tWS CE# tDS Data 0xA0 for Program PD for Program 0x30 for Sector Erase 0x10 for Chip Erase VA tAS tAH tWH tCP tCPH tCWHWH1 / tCWHWH2 / tCWHWH3 tDH tBUSY Status DOUT RY/BY# tRH Reset# Notes: PA = address of the memory location to be programmed. PD = data to be programmed at byte address. VA = Valid Address for reading program or erase status Dout = array data read at VA Shown above are the last two cycles of the program or erase command sequence and the last status read cycle Reset# shown to illustrate tRH measurement references. It cannot occur as shown during a valid command sequence. Figure 11. DQ2 vs. DQ6 Enter Embedded Erase Erase Suspend Enter Erase Suspend Program Enter Suspend Read Enter Suspend Program Erase Resume WE# Erase Erase Suspend Read Erase Erase Complete DQ6 DQ2 This Data Sheet may be revised by subsequent versions or modifications due to changes in technical specifications. 34 (c)2005 Eon Silicon Solution, Inc., www.essi.com.tw Rev. A, Issue Date: 2005/01/07 EN29LV400A Figure 12. Sector Protect/Unprotect Timing Diagram VID RESET# Vcc 0V 0V tVIDR tVIDR SA, A6,A1,A0 Data 60h Valid 60h Valid 40h Verify >0.4S Valid Status Sector Protect/Unprotect CE# WE# >1S OE# Sector Protect: 150 uS Sector Unprotect: 15 mS Notes: Use standard microprocessor timings for this device for read and write cycles. For Sector Protect, use A6=0, A1=1, A0=0. For Sector Unprotect, use A6=1, A1=1, A0=0. Temporary Sector Unprotect Parameter Std tVIDR tRSP Description VID Rise and Fall Time RESET# Setup Time for Temporary Sector Unprotect Min Min Speed Option -45R -55R -70 500 4 Unit -90 Ns s Figure 13. Temporary Sector Unprotect Timing Diagram VID RESET# 0 or 3 V 0 or 3 V tVIDR tVIDR CE# WE# tRSP RY/BY# This Data Sheet may be revised by subsequent versions or modifications due to changes in technical specifications. 35 (c)2005 Eon Silicon Solution, Inc., www.essi.com.tw Rev. A, Issue Date: 2005/01/07 EN29LV400A FIGURE 14. TSOP 12mm x 20mm This Data Sheet may be revised by subsequent versions or modifications due to changes in technical specifications. 36 (c)2005 Eon Silicon Solution, Inc., www.essi.com.tw Rev. A, Issue Date: 2005/01/07 EN29LV400A This Data Sheet may be revised by subsequent versions or modifications due to changes in technical specifications. 37 (c)2005 Eon Silicon Solution, Inc., www.essi.com.tw Rev. A, Issue Date: 2005/01/07 EN29LV400A FIGURE 15. FBGA 6mm x 8mm This Data Sheet may be revised by subsequent versions or modifications due to changes in technical specifications. 38 (c)2005 Eon Silicon Solution, Inc., www.essi.com.tw Rev. A, Issue Date: 2005/01/07 EN29LV400A ABSOLUTE MAXIMUM RATINGS Parameter Storage Temperature Plastic Packages Ambient Temperature With Power Applied Output Short Circuit Current1 A9, OE#, Reset# 2 Voltage with Respect to Ground All other pins 3 Value -65 to +125 -65 to +125 -55 to +125 200 -0.5 to +11.5 Unit C C C mA V -0.5 to Vcc+0.5 V Vcc -0.5 to +4.0 V Notes: 1. No more than one output shorted at a time. Duration of the short circuit should not be greater than one second. 2. Minimum DC input voltage on A9, OE#, RESET# pins is -0.5V. During voltage transitions, A9, OE#, RESET# pins may undershoot Vss to -1.0V for periods of up to 50ns and to -2.0V for periods of up to 20ns. See figure below. Maximum DC input voltage on A9, OE#, and RESET# is 11.5V which may overshoot to 12.5V for periods up to 20ns. 3. Minimum DC voltage on input or I/O pins is -0.5 V. During voltage transitions, inputs may undershoot Vss to -1.0V for periods of up to 50ns and to -2.0 V for periods of up to 20ns. See figure below. Maximum DC voltage on output and I/O pins is Vcc + 0.5 V. During voltage transitions, outputs may overshoot to Vcc + 1.5 V for periods up to 20ns. See figure below. 4. Stresses above the values so mentioned above may cause permanent damage to the device. These values are for a stress rating only and do not imply that the device should be operated at conditions up to or above these values. Exposure of the device to the maximum rating values for extended periods of time may adversely affect the device reliability. RECOMMENDED OPERATING RANGES1 Parameter Ambient Operating Temperature Commercial Devices Industrial Devices Operating Supply Voltage Vcc Value 0 to 70 -40 to 85 Regulated Voltage Range: 3.0-3.6 Standard Voltage Range: 2.7 to 3.6 1. Recommended Operating Ranges define those limits between which the functionality of the device is guaranteed. Unit C V Vcc +1.5V Maximum Negative Overshoot Waveform This Data Sheet may be revised by subsequent versions or modifications due to changes in technical specifications. Maximum Positive Overshoot Waveform 39 (c)2005 Eon Silicon Solution, Inc., www.essi.com.tw Rev. A, Issue Date: 2005/01/07 EN29LV400A ORDERING INFORMATION EN29LV400A T 70 T C P PACKAGING CONTENT (Blank) = Conventional P = Pb Free TEMPERATURE RANGE C = Commercial (0C to +70C) I = Industrial (-40C to +85C) PACKAGE T = 48-pin TSOP B = 48-ball Fine Pitch Ball Grid Array (FBGA) 0.80mm pitch, 6mm x 8mm package SPEED 45R = 45ns Regulated range 3.0V~3.6V 55R = 55ns Regulated range 3.0V~3.6V 70 = 70ns 90 = 90ns BOOT CODE SECTOR ARCHITECTURE T = Top Sector B = Bottom Sector BASE PART NUMBER EN = Eon Silicon Solution Inc. 29LV = FLASH, 3V Read Program Erase 400 = 4 Megabit (512K x 8 / 256K x 16) A = Version Identifier This Data Sheet may be revised by subsequent versions or modifications due to changes in technical specifications. 40 (c)2005 Eon Silicon Solution, Inc., www.essi.com.tw Rev. A, Issue Date: 2005/01/07 EN29LV400A Revisions List Revision No A Description Initial Release Date 2004/01/07 This Data Sheet may be revised by subsequent versions or modifications due to changes in technical specifications. 41 (c)2005 Eon Silicon Solution, Inc., www.essi.com.tw Rev. A, Issue Date: 2005/01/07 |
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