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M95640 Datasheet(Hoja de datos) 5 Page - STMicroelectronics

No. de Pieza. M95640
Descripción  64Kbit and 32Kbit Serial SPI Bus EEPROM With High Speed Clock
Descarga  39 Pages
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Fabricante  STMICROELECTRONICS [STMicroelectronics]
Página de inicio  http://www.st.com
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M95640, M95320
SUMMARY DESCRIPTION
These electrically erasable programmable memo-
ry (EEPROM) devices are accessed by a high
speed SPI-compatible bus. The memory array is
organized as 8192 x 8 bit (M95640), and 4096 x 8
bit (M95320).
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 2.
The device is selected when Chip Select (S) is tak-
en Low. Communications with the device can be
interrupted using Hold (HOLD).
Figure 2. Logic Diagram
Figure 3. DIP and SO Connections
Note: 1. See page 33 (onwards) for package dimensions, and how
to identify pin-1.
Figure 4. TSSOP14 Connections
Note: 1. See page 33 (onwards) for package dimensions, and how
to identify pin-1.
2. NC = Not Connected
Table 1. Signal Names
AI01789C
S
VCC
M95xxx
HOLD
VSS
W
Q
C
D
C
Serial Clock
D
Serial Data Input
Q
Serial Data Output
S
Chip Select
W
Write Protect
HOLD
Hold
VCC
Supply Voltage
VSS
Ground
D
VSS
C
HOLD
Q
SVCC
W
AI01790D
M95xxx
1
2
3
4
8
7
6
5
1
AI02346C
2
3
4
14
9
10
8
D
VSS
WC
S
HOLD
M95xxx
NC
Q
NC
NC
NC
NC
NC
5
6
7
12
13
11
VCC




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