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