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DESCRIPTION

The ST93CS56 and ST93CS57 are 2K bit Electrically Erasable Programmable Memory (EEPROM) fabricatedwith SGS-THOMSON’s High Endurance Single Polysilicon CMOS technology. The memory is accessed through a serial input D and output Q.

The 2K bit memory is organized as 128 x 16 bit words.The memory is accessed by a set of instructions which include Read, Write, Page Write, Write All and instructions used to set the memory protection. A Read instruction loads the address of the first word to be read into an internal address pointer.

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

■ SELF-TIMED PROGRAMMING CYCLE with AUTO-ERASE

■ READY/BUSY SIGNAL DURING PROGRAMMING

■ SINGLE SUPPLY VOLTAGE

– 3V to 5.5V for the ST93CS56

– 2.5V to 5.5V for the ST93CS57

■ USER DEFINED WRITE PROTECTED AREA

■ PAGE WRITE MODE (4 WORDS)

■ SEQUENTIAL READ OPERATION

■ 5ms TYPICAL PROGRAMMING TIME

■ ST93CS56 and ST93CS57 are replaced by the M93S56