DESCRIPTION

This specification covers a range of 1K bit serial EEPROM products, the ST93C46A,46C,46T specified at 5V±10 and the ST93C47C,47T specified at 3V to 5.5V.

In the text, products are referred to as ST93C46. The ST93C46 is a 1K bit Electrically Erasable ProgrammableMemory (EEPROM) fabricatedwith SGS-THOMSON’s High EnduranceSingle Polysili

con CMOS technology. The memory is accessed through a serial input (D) and output (Q).

1 MILLION ERASE/WRITE CYCLES, with 40 YEARS DATA RETENTION

DUAL ORGANIZATION: 64 x 16 or 128 x 8

BYTE/WORD and ENTIRE MEMORY PROGRAMMING INSTRUCTIONS

SELF-TIMED PROGRAMMING CYCLE with AUTO-ERASE

READY/BUSY SIGNAL DURING PROGRAMMING

SINGLE SUPPLY VOLTAGE:

– 4.5V to 5.5V for ST93C46 version

– 3V to 5.5V for ST93C47 version

SEQUENTIAL READ OPERATION

5ms TYPICAL PROGRAMMING TIME

ENHANCED ESD/LATCH UP PERFORMANCE for ”C” VERSION

ST93C46A, ST93C46C, ST93C46T, ST93C47C, ST93C47T are replaced by the M93C46