View MAX6889EVCMAXQU_8927157.PDF datasheet online --- IC-ON-LINE

Datasheet File OCR Text:

general description the max6889 evaluation system (ev system) consists ofa max6889 evaluation kit (ev kit) and a maxim cmaxqusb command module. the max6889/max6892 eeprom-configurable, multivoltage power-supply sequencers/supervisors monitor several voltage-detector inputs, two auxiliary inputs, and four general-purpose logic inputs and feature programmable outputs for highly configurable power-supply sequencing applications. the evaluation software runs under windows 98/2000/xp, providing a handy user interface to exercise the featuresof the max6889. order the complete ev system (MAX6889EVCMAXQU) for comprehensive evaluation of the max6889 using a personal computer. order the ev kit (max6889evkit) if the command module has already been purchased with a previous maxim ev system or for custom use in other microcontroller (?)-based systems. this system can also evaluate the max6892. contact factory for a free sample of max6892etj. max6889 stand-alone ev kit the max6889 ev kit provides a proven pc board layoutto facilitate evaluation of the max6889. it must be inter- faced to appropriate timing signals for proper opera- tion. connect 3.3v power, ground-return, and scl/sda interface signals to the breakout header pins (see figure 9). the leds are optional circuits, which may be powered separately or disabled altogether. refer to the max6889 data sheet for timing requirements. max6889 ev system the max6889 ev system obtains power from the com- puter? usb port. the evaluation software runs under windows 98/2000/xp on an ibm pc, interfacing to the ev system board through the computer? usb port. see the quick start section for setup and operating instructions. features ? proven pc board layout ? complete evaluation system ? convenient on-board test points ? fully assembled and tested evaluate: max6889/max6892 max6889 evaluation kit/evaluation system ________________________________________________________________ maxim integrated products 1 19-3660; rev 1; 8/05 component list for pricing, delivery, and ordering information, please contact maxim/dallas direct! at 1-888-629-4642, or visit maxim? website at www.maxim-ic.com. ordering information windows is a registered trademark of microsoft corp. part temp range interface type max6889evkit 0? to +70? user-supplied MAX6889EVCMAXQU 0? to +70? windows software,usb note: the max6889 evaluation software is designed for use with the complete evaluation system MAX6889EVCMAXQU(includes cmaxqusb module together with max6889evkit). if the max6889 evaluation software will not be used, the max6889evkit board can be purchased by itself, without the cmaxqusb module. MAX6889EVCMAXQU system part qty description max6889evkit 1 max6889 evaluation kit cmaxqusb 1 command module max6889evkit designation qty description c1, c2 2 1?, 6.3v x7r ceramic capacitors(0603) tdk c1608x7r0j105k c3?10 8 0.1?, 25v x7r ceramic capacitors (0603) tdk c1608x7r1e104k c11, c12 0 not installed, capacitors (0603) h1?4 4 8-pin headers ju1, ju12?u21 11 2-pin headers ju2?u11 10 3-pin headers led1?ed10 10 leds, red (t1-3/4) p1 1 2 x 10 right-angle receptacle r1?10 10 470 ? ?% resistors (0805) u1 1 max6889etj (32-pin thin qfn) none 17 shunts none 1 max6889 ev kit pc board downloaded from: http:///
evaluate: max6889/max6892 quick start required equipment before you begin, the following equipment is needed: maxim MAX6889EVCMAXQU (contains max6889ev kit board and cmaxqusb module) usb a-b cable (included with cmaxqusb module) windows 98/2000/xp computer with a usb port administrator privileges may be required whenfirst installing the device on windows 2000/xp procedure do not turn on the power until all connections are made: 1) set the cmaxqusb? vdd select jumper to 3.3v . 2) ensure that the max6889 ev kit? ju1 is in 1-2position, ju2?u5 are open, ju6?u10 are in 2-3 position, ju11?u21 are in 1-2 position, and ju22 is intact. see jumper function tables section. 3) carefully connect the boards by aligning the 20- pin header of the max6889 ev kit with the 20-pinconnector of the cmaxqusb module. gently press them together. the two boards should be flush against one another. 4) install the evaluation software on your computerby running the install.exe program on the disk. the program files are copied and icons are creat- ed for them in the windows start menu. 5) connect the usb cable between the cmaxqusb and the computer. the plug-and-play systemautomatically launches the new hardware wizard to find the device drivers on the installation disk. when prompted for a device driver, navigate to the directory where the software was installed (c:\max6889). 6) start the max6889 program by opening its icon in the start menu. 7) if supplies exceeding v cc are applied to in1?n5 while v cc source = 0, the part will be damaged. click on v cc source control at the bottom left of block diagram (figure 1) to toggle v cc source bit. detailed description of software main window the evaluation software? main window shows a blockdiagram of the max6889, with many ?lickable?features (figure 1). clicking on different parts of the block diagram leads to different feature tabs. clicking back returns to the main window? block diagram tab.configuration register changes made with the gui are written when the apply button is clicked. configuration of the device may be re-read by clicking refresh . press function key f1 at any time to return to the blockdiagram. press function key f2 to pop-up a window displaying registers pertinent to the selected feature (figure 2). the software reads the data registers auto- matically, unless disabled by unchecking poll inputs every 2 seconds under the options menu. at startup, the evaluation software reads the deviceconfiguration from the device registers. voltage monitor tab the voltage monitor tab configures voltage monitor thresholds (figure 3).high-impedance mode requires installing external resistor-dividers. a prototype area is provided on the ev kit for this purpose. digital inputs tab digital inputs gpi1?pi4 can be configured for active-high or active-low logic (figure 4). when a gpi_ pin is configured active-high, a logic-high level asserts the corresponding gpi_ input. outputs tab the po_ signals assert when a selected combination ofother signals become asserted (figure 5). the voltage monitors and the watchdog timer are internal signals. the gpi_ pins and mr are external inputs. max6889 evaluation kit/evaluation system 2 _______________________________________________________________________________________ component suppliers supplier phone fax website tdk 847-803-6100 847-390-4405 component.tdk.com note: indicate you are using the max6889 when contacting this component supplier. downloaded from: http:///
when a po_ signal is asserted, several actions mayoccur. the corresponding po_ pin can be driven to a high or low logic level. the pin driver can be configured as open-drain or as a push-pull output. user eeprom writes may optionally be locked out when the po_ is asserted. the margin signal allows user system testing, by forc- ing the po_ signal to hold its previously determinedstate. it is expected that margin will be high during normal operation. watchdog timer tab the watchdog timer asserts a fault condition after aperiod of time, unless the timer is periodically reset by an input pin being toggled (figure 6). during normal operation, an enabled watchdog timer must be serviced by toggling a gpi pin periodically. typically an external piece of firmware would service the watchdog timer by toggling a gpi pin inside a loop, and watchdog timer assertion would be configured to drive a po_ output pin. any software defect that halts the firmware then causes the watchdog timer to assert. the initial timeout period can be set to a longer value, to allow time for software initialization. alternatively, the watchdog timer can be held in reset by an optional ?lear?input. refer to the max6889 data sheet for more information about watchdog timer operation. registers tab the registers tab displays the volatile working registers of the max6889 (figure 7). pressing refresh reads and displays all register values. individual register bytes canbe modified by selecting the appropriate grid cell and typing zero-x prefix ?x?followed by two hexadecimal digits 0?/a?. if options menu item confirm reg write when editing is checked, a dialog box appears to confirm each byte written in this manner. at power-up, the max6889 automatically loads its regis- ters from the configuration eeprom. to store the active register values into the configuration eeprom, press commit to eeprom . register values can optionally be stored into a text fileon disk for later retrieval, using the load from file and save to file buttons. eeprom tab the eeprom tab displays the nonvolatile eeprom memory of the max6889 (figure 8). pressing refresh reads and displays the selected eeprom page.individual memory bytes can be modified by selecting the appropriate grid cell and typing zero-x prefix ?x followed by two hexadecimal digits 0?/a?. if options menu item confirm eeprom write when editing is checked, a dialog box appears to confirm each bytewritten in this manner. eeprom values can optionally be stored into a text file on disk for later retrieval, using the load from file and save to file buttons. detailed description of hardware the max6889 (u1) is surrounded by breakout headerpins h1?4. capacitors c1 and c2 bypass the power supply. the user power-supply inputs in1?n8 are bypassed by capacitors c3?10. connector p1 mates with the cmaxqusb module, which enables communication with software running on a pc (there are scl/sda pullup resistors on the mod- ule board). as a convenience, the module also pro- vides power to u1 through jumper ju1. this same power supply also powers most of the ev kit leds through jumper ju22. programmable outputs po1?o10 drive optional active-low led indicators. when the led is on, that indicates that the corresponding po output is low. capacitors c11 and c12 are left open when used with the max6889. these component sites are provided to support the max6892. evaluate: max6889/max6892 max6889 evaluation kit/evaluation system _______________________________________________________________________________________ 3 downloaded from: http:///
evaluate: max6889/max6892 evaluating the max6892 the software and the cmod board cannot be usedwith the max6892; the board must be operated in stand-alone mode. 1) with power off, replace u1 with a max6892etj. 2) install user-selected eia size 0603 capacitors for swt and srt at locations c11 and c12. refer tothe applications information section in the max6892 data sheet. 3) configure jumpers ju4?u11 according to table 3, jumper function table in the max6892 data sheet. 4) inputs in2?n8 require user-selected resistor-dividers, which may be installed in the prototype area. 5) apply power between v cc and gnd. the functions of the following pins change as follows: diagnostics window the diagnostics window is used for factory testingprior to shipping the evaluation kit. it is not meant for customer use. max6889 evaluation kit/evaluation system 4 _______________________________________________________________________________________ pin max6889etj max6892etj controlled by 1 po2 pg2 2 po3 pg3 3 po4 pg4 5 po5 pg5 6 po6 pg6 7 po7 pg7 8 po8 pg8 9 po9 reset 10 po10 wdo 11 margin margin ju2 12 mr mr ju3 13 sda th0 ju4 14 scl th1 ju5 15 a0 th2 ju6 16 a1 th3 ju7 17 gpi4 th4 ju8 18 gpi3 swt ju9, c12 19 gpi2 srt ju10, c11 20 gpi1 enable ju11 23 in8 in8 24 in7 in7 25 in6 in6 26 in5 in5 31 n.c. wdi 32 po1 pg1 downloaded from: http:///
evaluate: max6889/max6892 max6889 evaluation kit/evaluation system _______________________________________________________________________________________ 5 jumper function tables jumper pin position function open u1 must be powered by a user-supplied external supply connected to in1?n5. ju1 v cc closed* u1 input v cc is powered from connector p1 power supply (the cmaxqusb module). ensure that cmaxqusb? vdd select jumper is in the 3.3v position. 1-2 margin connected to dpb. open* normal operation. ju2 margin 2-3 user test mode. po outputs are held in their previously configured states. 1-2 mr connected to dpb. open* normal operation. ju3 mr 2-3 manual reset. 1-2 do not use. open* normal operation. ju4 sda 2-3 do not use. 1-2 do not use. open* normal operation. ju5 scl 2-3 do not use. 1-2 a0 = 1. open do not use. ju6 a0 2-3* a0 = 0. 1-2 a1 = 1. open do not use. ju7 a1 2-3* a1 = 0. 1-2 input gpi4 is driven high. open input gpi4 can be driven by external user circuitry. ju8 gpi4 2-3* input gpi4 is driven low. 1-2 input gpi3 is driven high. open input gpi3 can be driven by external user circuitry. ju9 gpi3 2-3* input gpi3 is driven low. 1-2 input gpi2 is driven high. open input gpi2 can be driven by external user circuitry. ju10 gpi2 2-3* input gpi2 is driven low. 1-2* input gpi1 is driven high. open input gpi1 can be driven by external user circuitry. ju11 gpi1 2-3 input gpi1 is driven low. closed* outputs po1?o10 drive corresponding active-low led indicators led1?ed10. ju12?u21 po1?o10 open corresponding po1?o10 output available to drive user circuitry. closed* (pc board trace) led1?ed16 are powered from connector p1 power supply (the cmaxqusbmodule). ju22 open led1?ed16 are unused, or can be externally powered. table 1. jumper function table for max6889 * default configuration. downloaded from: http:///
evaluate: max6889/max6892 max6889 evaluation kit/evaluation system 6 _______________________________________________________________________________________ ju6 shunt position ju7 shunt position a0 a1 device address 2-3* 2-3* 0 0 1010 00x r/w 1-2 2-3 1 0 1010 01x r/w 2-3 1-2 0 1 1010 10x r/w 1-2 1-2 1 1 1010 11x r/w table 2. jumper ju6, ju7 (max6889 only: device address selection) * default configuration. jumper pin position function open u1 must be powered by a user-supplied external supply connected to in1?n5. ju1 v cc closed* u1 input v cc is powered from connector p1 power supply. 1-2 margin connected to dpb. open* normal operation. ju2 margin 2-3 user test mode. pg outputs are held in their previously configured states. 1-2 mr connected to dpb. open* normal operation. ju3 mr 2-3 manual reset. 1-2 th0 = 1. open* do not use. ju4 th0 2-3 th0 = 0. 1-2 th1 = 1. open* do not use. ju5 th1 2-3 th1 = 0. 1-2 th2 = 1. open do not use. ju6 th2 2-3* th2 = 0. 1-2 th3 = 1. open do not use. ju7 th3 2-3* th3 = 0. 1-2 th4 = 1. open do not use. ju8 th4 2-3* th4 = 0. 1-2 swt = 1 (default watchdog timeout period). open user-installed c11 determines swt time value. ju9 swt 2-3* swt = 0 (watchdog disabled). table 3. jumper function table for max6892 * default configuration. downloaded from: http:///
evaluate: max6889/max6892 max6889 evaluation kit/evaluation system _______________________________________________________________________________________ 7 jumper pin position function 1-2 srt = 1 (default reset timeout period). open user-installed c12 determines srt time value. ju10 srt 2-3* srt = 0 (reset asserted). 1-2* enable = 1 (force all pg outputs low). open user-supplied signal overrides internal pulldown. ju11 enable 2-3 enable = 0 (pg determined by input conditions). closed* outputs pg1?g10 drive corresponding active-low led indicators led1?ed10. ju12?u21 pg1?g10 open corresponding pg1?g10 output available to drive user circuitry. closed* (pc board trace) led1?ed16 are powered from connector p1 power supply (the cmaxqusbmodule). ju22 open led1?ed16 are unused, or can be externally powered. table 3. jumper function table for max6892 (continued) * default configuration. figure 1. block diagram (bring up anytime by pressing function key f1) downloaded from: http:///
evaluate: max6889/max6892 max6889 evaluation kit/evaluation system 8 _______________________________________________________________________________________ figure 2. related registers adjunct window (shown by pressing function key f2) figure 3. voltage monitor tab downloaded from: http:///
evaluate: max6889/max6892 max6889 evaluation kit/evaluation system _______________________________________________________________________________________ 9 figure 4. digital inputs tab figure 5. programmable outputs tab downloaded from: http:///
evaluate: max6889/max6892 max6889 evaluation kit/evaluation system 10 ______________________________________________________________________________________ figure 6. watchdog timers tab figure 7. registers tab downloaded from: http:///
evaluate: max6889/max6892 max6889 evaluation kit/evaluation system ______________________________________________________________________________________ 11 figure 8. eeprom memory tab downloaded from: http:///
evaluate: max6889/max6892 max6889 evaluation kit/evaluation system 12 ______________________________________________________________________________________ p1-1 p1-2 p1-3 p1-4 p1-5 p1-6 p1-7 p1-8 p1-9 p1-10 p1-11 p1-12 p1-13 p1-14 p1-15 p1-16 p1-17 p1-18 p1-19 p1-20 ju22 3.3v 2 x 10 header p1 r1 470 ? 1 31 30 h2-1 11 h2-2 12 h2-3 13 h2-4 h3-6 c4 0.1 f 14 h2-5 15 h2-6 16 29 9 10 h3-1 17 28 27 26 25 po2 po1 n.c. in1in2 in3 in4 in5 in6 po9po10 margin mr sda scl a0 a1 2 h1-2 po3 3 po4 45 gndpo5 6 po6 7 po7 8 po8 gp14 h3-2 18 gp13 h3-3 19 gp12 h3-4 20 gp11 h3-7 2322 in8 dbp h3-5 c2 1 f 21 v cc h3-8 24 in7 ju10 ju9 u1 max6889 c3 0.1 f ju1 +3.3v c1 1 f dbp dbp dbp ju11 ju8 dbp dbp 1 1 11 2 222 3 ju7 gnd 1 2 3 ju5 dbp 1 2 3 ju4 dbp 1 2 3 ju6 dbp 1 2 3 ju3 dbp 1 2 3 ju2 dbp 1 2 3 3 3 3 c9 0.1 f c8 0.1 f c7 0.1 f c6 0.1 f 32 c5 0.1 f h4-8 h4-7 h4-1 h4-2 h4-3 h4-4 h4-5 h4-6 c10 0.1 f c12 open c11 open h2-7 h2-8 h1-1 h1-3 h1-5 h1-6 h1-7 h1-8 h1-4 ju12ju13 ju14 ju15 ju16 ju17 ju18ju19 ju20 ju21 r2 470 ? r3 470 ? r4 470 ? r5 470 ? r6 470 ? r7 470 ? r8 470 ? r9 470 ? r10 470 ? led1led2 led3 led4led5 led6 led7 led8led9 led10 u1 figure 9. max6889 ev kit schematic downloaded from: http:///
maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a maxim product. no circuit patent licenses are implied. maxim reserves the right to change the circuitry and specifications without notice at any time. maxim integrated products, 120 san gabriel drive, sunnyvale, ca 94086 408-737-7600 ____________________ 13 2005 maxim integrated products printed usa is a registered trademark of maxim integrated products, inc. evaluate: max6889/max6892 max6889 evaluation kit/evaluation system figure 10. max6889 ev kit component placement guidecomponent side figure 11. max6889 ev kit pc board layout?omponent side figure 12. max6889 ev kit pc board layout?older side downloaded from: http:///

▲Up To Search▲

Price & Availability of MAX6889EVCMAXQU

	To Download MAX6889EVCMAXQU Datasheet File
If you can't view the Datasheet, Please click here to try to view without PDF Reader .