Description

The U631H256 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 functions are disabled.

Features

High-performance CMOS non volatile 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

Software RECALL Initiation

Unlimited RECALL cycles from EEPROM

Unlimited Read and Write to SRAM

Single 5 V ± 10 % Operation

Operating temperature ranges:

  0 to 70 °C

  -40 to 85 °C

QS 9000 Quality Standard

ESD protection > 2000 V(MIL STD 883C M3015.7-HBM)

RoHS compliance and Pb- free Package: SOP28 (330 mil)

‡ ‡‡ ‡‡‡‡ ‡‡‡ ‡ ‡‡ ‡‡ ‡