DESCRIPTION
The CAT93C56/57 is a 2-Kb CMOS Serial EEPROM device which is organized as either 128 registers of 16 bits (ORG pin at VCC) or 256 registers of 8 bits (ORG pin at GND). Each register can be written (or read) serially by using the DI (or DO) pin. The CAT93C56/57 features sequential read and self-timed internal write with autoclear. On-chip Power-On Reset circuitry protects the internal logic against powering up in the wrong state.

FEATURES
■ High speed operation: 2MHz
■ 1.8V to 5.5V supply voltage range
■ Selectable x8 or x16 memory organization
■ Sequential read
■ Software write protection
■ Power-up inadvertant write protection
■ Low power CMOS technology
■ 1,000,000 Program/erase cycles
■ 100 year data retention
■ Industrial temperature ranges
■ RoHS-compliant 8-pin PDIP, SOIC, TSSOP and 8-pad TDFN packages