DESCRIPTION
The CAT93C46/56/57/66/86 are 1K/2K/2K/4K/16K-bit Serial E2PROM memory devices which are configured as either registers of 16 bits (ORG pin at VCC) or 8 bits (ORG pin at GND). Each register can be written (or read) serially by using the DI (or DO) pin.

FEATURES
■ High Speed Operation:
    – 93C46/56/57/66: 1MHz
    – 93C86: 3MHz
■ Low Power CMOS Technology
■ 1.8 to 6.0 Volt Operation
■ Selectable x8 or x16 Memory Organization
■ Self-Timed Write Cycle with Auto-Clear
■ Hardware and Software Write Protection
■ Power-Up Inadvertant Write Protection
■ 1,000,000 Program/Erase Cycles
■ 100 Year Data Retention
■ Commercial, Industrial and Automotive Temperature Ranges
■ Sequential Read (except 93C46)
■ Program Enable (PE) Pin (93C86 only)