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M95010 Fiches technique(PDF) 12 Page - STMicroelectronics

No de pièce M95010
Description  4 Kbit, 2 Kbit and 1 Kbit Serial SPI bus EEPROM with high speed Clock
PDF  42 Pages
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Fabricant  STMICROELECTRONICS [STMicroelectronics]
Site Internet  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

M95010 Fiches technique(HTML) 12 Page - STMicroelectronics

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Connecting to the SPI bus
M95040, M95020, M95010
12/42
3.1
SPI modes
These devices can be driven by a microcontroller with its SPI peripheral running in either of
the two following modes:
●
CPOL=0, CPHA=0
●
CPOL=1, CPHA=1
For these two modes, input data is latched in on the rising edge of Serial Clock (C), and
output data is available from the falling edge of Serial Clock (C).
The difference between the two modes, as shown in Figure 4, is the clock polarity when the
bus master is in Stand-by mode and not transferring data:
●
C remains at 0 for (CPOL=0, CPHA=0)
●
C remains at 1 for (CPOL=1, CPHA=1)
Figure 4.
SPI modes supported
AI01438B
C
MSB
CPHA
D
0
1
CPOL
0
1
Q
C
MSB



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