STK12C68-W45 Cypress Semiconductor Corp, STK12C68-W45 Datasheet
STK12C68-W45
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STK12C68-W45 Summary of contents
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... Simtek internal qualification testing and has reached production status. STK12C68, STK12C68-5 (SMD5962-94599) DESCRIPTION The Simtek STK12C68 is a 64Kb fast static RAM with a non-volatile Quantum Trap storage element included with each memory cell. The SRAM provides the fast access & cycle times, ease of use and unlimited read & ...
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... STK12C68, STK12C68-5 (SMD5962-94599) Packages 28-pin SOIC 28-pin DIP Pin Descriptions Pin Name A -A Input -DQ I Input W Input G Input V Power Supply CC HSB I/O V Power Supply CAP V Power Supply SS Document Control #ML0008 Rev 2.0 June, 2008 I/O Address: The 13 address inputs select one of 8,192 bytes in the nvSRAM array ...
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... Note f: These parameters are guaranteed but not tested. Document Control #ML0008 Rev 2.0 June, 2008 STK12C68, STK12C68-5 (SMD5962-94599) a Note a: Stresses greater than those listed under “Absolute Maximum Rat- ings” may cause permanent damage to the device. This is a stress rating only, and functional operation of the device at conditions + 0 ...
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... STK12C68, STK12C68-5 (SMD5962-94599) SRAM READ CYCLES #1 & #2 SYMBOLS NO. #1, #2 Alt Chip Enable Access Time ELQV ACS Read Cycle Time AVAV , ELEH Address Access Time AVQV Output Enable to Data Valid GLQV Output Hold after Address Change AXQX Address Change or Chip Enable to ELQX ...
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... PREVIOUS DATA SRAM WRITE CYCLE #2: E Controlled ADDRESS 18 t AVEL E W DATA IN DATA OUT Document Control #ML0008 Rev 2.0 June, 2008 STK12C68, STK12C68-5 (SMD5962-94599) STK12C68, STK12C68-5-25 PARAMETER MIN MAX Write Cycle Time 25 Write Pulse Width 20 Chip Enable to End of Write 20 Data Set-up to End of Write ...
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... STK12C68, STK12C68-5 (SMD5962-94599) HARDWARE MODE SELECTION E W HSB Note m: HSB STORE operation occurs only if an SRAM WRITE has been done since the last nonvolatile cycle. After the STORE (if any) completes, the part will go into standby mode, inhibiting all operations until HSB rises. ...
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... RESTORE HSB W DQ (DATA OUT) POWER-UP RECALL Document Control #ML0008 Rev 2.0 June, 2008 STK12C68, STK12C68-5 (SMD5962-94599) PARAMETER Power-up RECALL Duration STORE Cycle Duration Low Voltage Trigger ( HSB Low SWITCH Time Allowed to Complete SRAM Cycle Low Voltage Trigger Level Low Voltage Reset Level rises above V ...
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... STK12C68, STK12C68-5 (SMD5962-94599) SOFTWARE-CONTROLLED STORE/RECALL CYCLE SYMBOLS NO. Standard Alternate STORE/RECALL Initiation Cycle Time AVAV Address Set-up Time AVEL Clock Pulse Width ELEH Address Hold Time ELAX 37 t RECALL Duration RECALL Note u: The software sequence is clocked on the falling edge of E without involving G (double clocking will abort the sequence). See application note: MA0002 http://www ...
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... During power up, or after any low-power condition (V CAP latched. When V voltage initiated and will take t SRAM If the STK12C68, STK12C68 the end of power-up corrupted. To help avoid this situation, a 10K Ohm resistor should be connected either between W and system V 0.1μF connected SOFTWARE NONVOLATILE STORE ...
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... V can be tied to ground and + 5V applied to CC Document Control #ML0008 Rev 2.0 June, 2008 V CAP which the AutoStore function is disabled. If the STK12C68, STK12C68-5 is operated in this configu- ration, references to V cycle, RECALL throughout this data sheet. In this mode, controlled opera- READ operations may be triggered through software con- trol or the HSB pin ...
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... STK12C68, STK12C68-5 parts can be tied together and share a single capacitor. The capacitor size must be scaled by the number of devices con- nected to it. When any one of the STK12C68, STK12C68-5s detects a power loss and asserts HSB, the common HSB pin will cause all parts to ...
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... STK12C68, STK12C68-5 (SMD5962-94599) 100 100 Cycle Time (ns) Figure 4: I (max) Reads cc BEST PRACTICES nvSRAM products have been used effectively for over 15 years. While ease-of-use is one of the product’s main system values, experience gained working with hundreds of applications has resulted in the following suggestions as best practices: • ...
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... COMMERCIAL AND INDUSTRIAL ORDERING INFORMATION STK12C68 - Document Control #ML0008 Rev 2.0 June, 2008 STK12C68, STK12C68-5 (SMD5962-94599) Packing Option Blank = Tube TR = Tape and Reel Temperature Range Blank = Commercial (0 to 70° Industrial (–40 to 85°C Access Time 25 = 25ns 35 = 35ns 45 = 45ns Lead Finish F = 100% Sn (Matte Tin) ...
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... STK12C68, STK12C68-5 (SMD5962-94599) MILITARY ORDERING INFORMATION STK12C68 - 5962 - 94599 Document Control #ML0008 Rev 2.0 June, 2008 Temperature Range M = Military (–55 to 125°C) Access Time 35 = 35ns 55 = 55ns Package C = Ceramic 28-pin 300 mil DIP (gold lead finish Ceramic 28-pin 300 mil DIP (solder dip finish) ...
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... STK12C68-5C35M STK12C68-5C55M STK12C68-5K35M STK12C68-5K55M STK12C68-5L35M STK12C68-5L55M Document Control #ML0008 Rev 2.0 June, 2008 STK12C68, STK12C68-5 (SMD5962-94599) Description 5V 8Kx8 AutoStore nvSRAM CDIP28-300 5V 8Kx8 AutoStore nvSRAM CDIP28-300 5V 8Kx8 AutoStore nvSRAM LCC28 5V 8Kx8 AutoStore nvSRAM LCC28 5V 8Kx8 AutoStore nvSRAM PDIP28-600 5V 8Kx8 AutoStore nvSRAM PDIP28-600 ...
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... STK12C68, STK12C68-5 (SMD5962-94599) 28-Lead, 330 mil SOIC Gull Wing 0.020 ( 0.014 0.336 8.534 ( ) 0.326 8.280 Pin 1 0.014 0.356 ( 0.008 0.203 Document Control #ML0008 Rev 2.0 June, 2008 Package Diagrams 0.713 18. 0.733 18.62 0.508 0.050 (1.270) ) 0.356 0.103 0.093 ) DIM = INCHES ( MIN ...
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... PDIP Pin 1 Index ( ) .020 0.51 .030 0. ---- ---- 4.57 .180 ( ) .030 0.76 .045 1.14 Document Control #ML0008 Rev 2.0 June, 2008 STK12C68, STK12C68-5 (SMD5962-94599 1.345 34.16 1.385 35. .014 ( ) 0.36 .045 1.14 .022 0.56 .060 1. .300 7.62 .325 8. .008 0.20 0 .015 ...
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... STK12C68, STK12C68-5 (SMD5962-94599) 28-Lead, 600 mil PDIP Pin 1 Index 0.040 ( ) 1.02 0.050 1.27 ---- ---- (4.57) .180 Document Control #ML0008 Rev 2.0 June, 2008 1.440 ( 36.58 ) 1.460 37.08 0.014 0. 0.045 0.56 0.022 0.060 0.595 15. 15.88 0.625 0.008 0.015 0.600 ( 15.24 ) 0.660 16.76 18 0.530 ( 13 ...
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... Side Braze DIL ( ) --- --- .060 1. 3.15 .124 4.14 .162 .016 .020 ( ) .290 .310 .300 7. .320 8.13 Document Control #ML0008 Rev 2.0 June, 2008 STK12C68, STK12C68-5 (SMD5962-94599) 1.386 ( ) 35.20 1.414 35. 0. .048 1.22 0.51 1.32 .052 7.37 7.87 .009 ( ) 0.23 .012 0.30 ...
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... STK12C68, STK12C68-5 (SMD5962-94599) 28-Pad, 350 mil Ceramic LCC ο (1.02) 0.040 REF places ο (0.51) 0.020 REF X 45 (0.23) 0.009 REF 28 places 0.006 0.022 0.022 0.028 ( 0. 0.56 ) 0.56 0.71 --- --- ( ) 0.558 14.17 Document Control #ML0008 Rev 2.0 June, 2008 0.542 13. 0.558 14.17 ...
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... Page 11: under HSB Operation, revised first paragraph to read “The HSB pin has a very resistive pullup...” Page 14: added access time column to table. SIMTEK STK12C68, STK12C68-5 Datasheet, June 2008 Copyright 2008, Simtek Corporation. All rights reserved. This datasheet may only be printed for the expressed use of Simtek Customers. No part of the datasheet may be reproduced in any other form or means without the express written permission from Simtek Corporation ...