ST95022

2 Kbit Serial SPI EEPROM with High Speed Clock

February 1999

1/16

HIGH SPEED CLOCK RATE:

– 2.1 MHz Max

1,000,000 ERASE/WRITE CYCLES

40 YEARS DATA RETENTION

SINGLE 4.5V to 5.5V SUPPLY VOLTAGE

SPI BUS COMPATIBLE SERIAL INTERFACE

BLOCK WRITE PROTECTION

STATUS REGISTER

16 BYTE PAGE MODE

WRITE PROTECT

SELF-TIMED PROGRAMMING CYCLE

E.S.D.PROTECTION GREATER than 4000V

SUPPORTS POSITIVE CLOCK SPI MODES

DESCRIPTION

The ST95022 is an high speed 2 Kbit Electrically

Erasable Programmable Memory (EEPROM) fab-

ricated with STMicroelectronics’s High Endurance

Single Polysilicon CMOS technology. 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).

AI01722

S

VCC

ST95022

HOLD

VSS

W

Q

C

D

Figure 1. Logic Diagram

C

Serial Clock

D

Serial Data Input

Q

Serial Data Output

S

Chip Select

W

Write Protect

HOLD

Hold

Supply Voltage

Ground

Table 1. Signal Names

8

1

SO8 (M)

150mil Width