M95256-WMN3TP/AB STMicroelectronics, M95256-WMN3TP/AB Datasheet - Page 6
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M95256-WMN3TP/AB
Manufacturer Part Number
M95256-WMN3TP/AB
Description
Manufacturer
STMicroelectronics
Datasheet
1.M95256-WMN3TPAB.pdf
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Description
The M95256, M95256-W, M95256-R and M95256-DR are electrically erasable
programmable memory (EEPROM) devices. They are accessed by a high speed SPI-
compatible bus. Their memory array is organized as 32768 × 8 bits.
The M95256-DR also offers an additional page, named the Identification Page (64 bytes)
which can be written and (later) permanently locked in Read-only mode. This Identification
Page offers flexibility in the application board production line, as the Identification Page can
be used to store unique identification parameters and/or parameters specific to the
production line.
The device is accessed by a simple serial interface that is SPI-compatible.
Figure 1.
The bus signals are C, D and Q, as shown in
The device is selected when Chip Select (S) is taken low. Communications with the device
can be interrupted using Hold (HOLD).
Figure 2.
1. See
Section 10: Package mechanical data
Logic diagram
8-pin package connections
HOLD
Doc ID 12276 Rev 17
W
D
C
S
V SS
W
Q
S
for package dimensions, and how to identify pin-1.
V CC
V SS
1
2
3
4
M95256
M95256
Table 1
M95256-DR, M95256, M95256-W, M95256-R
8
7
6
5
V CC
HOLD
C
D
and
Figure
Q
AI12361
AI12362
1.
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