U637256 nvsram equivalent, capstore 32k x 8 nvsram.
CMOS non volatile static RAM 32768 x 8 bits 70 ns Access Time 35 ns Output Enable Access Time ICC = 15 mA typ. at 200 ns Cycle Time Unlimited Read and Write Cyc.
The U637256 has two separate modes of operation: SRAM mode and nonvolatile mode. 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 thi.
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