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M95512-WCS3G/AB Fiches technique(PDF) 11 Page - STMicroelectronics

No de pièce M95512-WCS3G/AB
Description  512 Kbit serial SPI bus EEPROM with high-speed clock
PDF  48 Pages
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Fabricant  STMICROELECTRONICS [STMicroelectronics]
Site Internet  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

M95512-WCS3G/AB Fiches technique(HTML) 11 Page - STMicroelectronics

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M95512-W, M95512-R
Connecting to the SPI bus
Doc ID 11124 Rev 13
11/48
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 5, 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 5.
SPI modes supported
AI01438B
C
MSB
CPHA
D
0
1
CPOL
0
1
Q
C
MSB



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