U631H256 PDF Datasheet

Not Recommended For New Designs U631H256 SoftStore 32K x 8 nvSRAM Features ‡ High-performance CMOS nonvolatile static RAM 32768 x 8 bits ‡ 25 ns Access Times ‡ 10 ns Output Enable Access Times ‡ Software STORE Initiation ‡ Automatic STORE Timing ‡ 106 STORE cycles to EEPROM ‡ 100 years data retention in EEPROM ‡ Automatic RECALL on Power Up ‡ Soft

Obsolete - Not Recommended for New Designs U631H256XS SoftStore 32K x 8 nvSRAM Die Description The U631H256XS 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 this mode SRAM