m95256 STMicroelectronics, m95256 Datasheet - Page 6

• Manufacturer Part Number: m95256
• Description: 256 Kbit Serial Spi Bus Eeprom With High Speed Clock
• Manufacturer: STMicroelectronics

Description
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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
The device is selected when Chip Select (S) is taken low. Communications with the device
can be interrupted using Hold (HOLD).
In order to meet environmental requirements, ST offers these devices in ECOPACK®
packages. ECOPACK® packages are Lead-free and RoHS compliant.
ECOPACK is an ST trademark. ECOPACK specifications are available at: www.st.com.
Figure 1.
Figure 2.
1. See
Section 10: Package mechanical
Logic diagram
SO and TSSOP connections
HOLD
Table 1
W
D
C
S
for package dimensions, and how to identify pin-1.
V SS
and
W
Q
S
V CC
V SS
Figure
1
2
3
4
M95256
M95256
1.
8
7
6
5
V CC
HOLD
C
D
Q
M95256, M95256-W, M95256-R
AI12361
AI12362