M95010 ST Microelectronics, M95010 Datasheet - Page 2

• Manufacturer Part Number: M95010
• Description: 4Kbit / 2Kbit and 1Kbit Serial SPI Bus EEPROM With High Speed Clock
• Manufacturer: ST Microelectronics

M95040, M95020, M95010
SUMMARY DESCRIPTION
The M95040 is a 4 Kbit (512 x 8) electrically eras-
able programmable memory (EEPROM), access-
ed by a high speed SPI-compatible bus. The other
members of the family (M95020, M95010) are
identical, though proportionally smaller (2 and 1
Kbit, respectively).
Each device is accessed by a simple serial
interface that is SPI-compatible. The bus signals
are C, D and Q, as shown in Table 1 and Figure 2.
The device is selected when Chip Select (S) is tak-
en Low. Communications with the device can be
interrupted using Hold (HOLD). WRITE instruc-
tions are disabled by Write Protect (W).
Figure 2. Logic Diagram
2/33
HOLD
W
D
C
S
V CC
V SS
M95xxx
Q
AI01789C
Figure 3. DIP, SO and TSSOP Connections
Note: 1. See page 28 (onwards) for package dimensions, and how
Table 1. Signal Names
C
D
Q
S
W
HOLD
V
V
CC
SS
to identify pin-1.
V SS
Serial Clock
Serial Data Input
Serial Data Output
Chip Select
Write Protect
Hold
Supply Voltage
Ground
W
Q
S
1
2
3
4
M95xxx
AI01790D
8
7
6
5
V CC
HOLD
C
D