ST95040 Datasheet, PDF (1/18 Pages) STMicroelectronics – 4K/2K/1K Serial SPI EEPROM with Positive Clock Strobe

ST95040
ST95020, ST95010
4K/2K/1K Serial SPI EEPROM with Positive Clock Strobe
1 MILLION ERASE/WRITE CYCLES
40 YEARS DATA RETENTION
SINGLE SUPPLY VOLTAGE
– 4.5V to 5.5V for ST950x0
– 2.5V to 5.5V for ST950x0W
SPI BUS COMPATIBLE SERIAL INTERFACE
2 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
SUPPORTS POSITIVE CLOCK SPI MODES
8
1
PSDIP8 (B)
0.25mm Frame
8
1
SO8 (M)
150mil Width
Figure 1. Logic Diagram
DESCRIPTION
The ST950x0 is a family of Electrically Erasable
Programmable Memories (EEPROM) fabricated
with STMicroelectronics’s High Endurance Single
Polysilicon CMOS technology. Each 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).
Table 1. Signal Names
C
Serial Clock
D
Serial Data Input
Q
Serial Data Output
S
Chip Select
W
Write Protect
HOLD
Hold
V_CC
Supply Voltage
VSS
Ground
VCC
D
C
S
W
HOLD
Q
ST950x0
VSS
AI01435B
June 1998
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