DESCRIPTION
The ST95P04 is a 4K bit Electrically Erasable Programmable Memory (EEPROM) fabricated with SGS-THOMSON’s High Endurance Single Polysilicon CMOS technology. The 4K bit memory is organised as 32 pages of 16 bytes. The memory is accessed by a simple SPI bus compatible serial interface. The bus signals are a serial clock input (C), a serial data input (D) and a serial data output (Q). The device connected to the bus is selected when the chip select input (S) goes low. Communications with the chip can be interrupted with a hold input (HOLD). The write operation is disabled by a write protect input (W).

■ 1 MILLION ERASE/WRITE CYCLES
■ 40 YEARS DATA RETENTION
■ SINGLE 3V to 5.5V SUPPLY VOLTAGE
■ SPI BUS COMPATIBLE SERIAL INTERFACE
■ 1 MHz CLOCK RATE MAX
■ BLOCK WRITE PROTECTION
■ STATUS REGISTER
■ 16 BYTE PAGE MODE
■ WRITE PROTECT
■ SELF-TIMED PROGRAMMING CYCLE
■ E.S.D.PROTECTION GREATER than 4000V
■ The ST95P04 will be replaced shortly by the updated version ST95040