器件名称:
STK15C88-W45I
功能描述:
32K x 8 AutoStore nvSRAM High Performance CMOS Nonvolatile Static RAM
文件大小:
75.98KB 共9页
简 介:
STK15C88 32K x 8 AutoStore nvSRAM High Performance CMOS Nonvolatile Static RAM FEATURES Nonvolatile Storage Without Battery Problems Directly Replaces 32K x 8 static RAM, Battery Backed RAM or EEPROM 25ns, 35ns and 45ns Access Times Store to EEPROM Initiated by Software or AutoStore on Power Down Recall to SRAM by Software or Power Restore 15mA ICC at 200ns Cycle Time Unlimited Read, Write and Recall Cycles 1,000,000 Store Cycles to EEPROM 100 Year Data Retention Over Full Industrial Temperature Range Commercial and Industrial Temp. Ranges 28 Pin 600 or 300 mil PDIP and 350 mil SOIC DESCRIPTION The Simtek STK15C88 is a fast static RAM with a nonvolatile, electrically-erasable PROM element incorporated in each static memory cell. The SRAM can be read and written an unlimited number of times, while independent, nonvolatile data resides in EEPROM. Data transfers from the SRAM to the EEPROM (the STORE operation) can take place automatically on power down using charge stored in system capacitance. Transfers from the EEPROM to the SRAM (the RECALL operation) take place automatically on restoration of power. Initiation of STORE and RECALL cycles can also be controlled by entering control sequences on the SRAM inputs. BLOCK DIAGRAM EEPROM ARRAY 256 x 1024 A6 A7 A8 A9 A11 A12 A13 A14 DQ0 DQ1 DQ2 DQ3 DQ4 DQ5 DQ6 DQ7 ROW DECODER PIN CONFIGURATIONS A 14 A 12 A7 1 2 3 4 5 6 7 8 9 10 11 12 13 14 28 27 26 25 24 23 22 21 20 19 18 17 16 15 V CC W A 13 A8 A9 A 11 G A 10 E DQ 7 DQ……
