FEATURES
High-performance CMOS nonvolatile static RAM 32768 x 8 bits 25 ns Access Time 10 ns Output Enable Access Time ICC = 15 mA typ. at 200 ns Cycle Time Unlimited Read and Write Cycles to SRAM Automatic STORE to EEPROM on Power Down using charge stored in an integrated capacitor Software initiated STORE Automatic STORE Timing 106 STORE cycles to EEPROM 100 years data retention in EEPROM Automatic RECALL on Power Up Software RECALL Initiation Unlimited RECALL cycles from EEPROM Single 5 V ± 10 % Operation Operating temperature range: 0 to 70 °C -40 to 85°C QS 9000 Quality Standard (MIL STD 883C M3015.7) RoHS compliance and Pb- free Package: PDIP28 (600 mil) DESCRIPTION
In SRAM mode, the memory operates as an ordinary static RAM. In nonvolatile operation, data is transferred in parallel from SRAM to EEPROM or from EEPROM to SRAM. In this mode SRAM functions are disabled. The SRAM can be read and written an unlimited number of times, while independent nonvolatile data resides in EEPROM.
