DESCRIPTION

The CAT93C46R is a 1-Kb CMOS Serial EEPROM device which is organized as either 64 registers of 16 bits or 128 registers of 8 bits, as determined by the state of the ORG pin. The CAT93C46R 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.

In contrast to the CAT93C46, the CAT93C46R features an internal instruction clock counter which provides improved noise immunity for Write/Erase commands.

FEATURES

■ High speed operation: 4MHz @ 5V, 2MHz @ 1.8V

■ 1.8V to 5.5V supply voltage range

■ Selectable x8 or x16 memory organization

■ Sequential read

■ Software write protection

■ Power-up inadvertent write protection

■ Low power CMOS technology

■ 1,000,000 program/erase cycles

■ 100 year data retention

■ Industrial temperature range

■ RoHS-compliant 8-pin PDIP, SOIC, TSSOP and 8-pad TDFN packages