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M95256 Datasheet(PDF) 6 Page - STMicroelectronics

Part No. M95256
Description  256 Kbit serial SPI bus EEPROM with high-speed clock
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

M95256 Datasheet(HTML) 6 Page - STMicroelectronics

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Description
M95256, M95256-W, M95256-R
6/43
1
Description
The M95256, M95256-W and M95256-R are electrically erasable programmable memory
(EEPROM) devices. They are accessed by a high speed SPI-compatible bus. Their memory
array is organized as 32768 x 8 bits.
The 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 1.
The device is selected when Chip Select (S) is taken low. Communications with the device
can be interrupted using Hold (HOLD).
Figure 1.
Logic diagram
Figure 2.
SO and TSSOP connections
1.
See Section 10: Package mechanical data for package dimensions, and how to identify pin-1.
AI12361
S
VCC
M95256
HOLD
VSS
W
Q
C
D
D
VSS
C
HOLD
Q
SVCC
W
AI12362
M95256
1
2
3
4
8
7
6
5


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