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M95040-DRMN3TP датащи(PDF) 10 Page - STMicroelectronics

номер детали M95040-DRMN3TP
подробное описание детали  Automotive 4-Kbit serial SPI bus EEPROMs
PDF  41 Pages
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производитель  STMICROELECTRONICS [STMicroelectronics]
домашняя страница  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

M95040-DRMN3TP датащи(HTML) 10 Page - STMicroelectronics

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Operating features
M95040-A125 M95040-A145
10/41
DocID024225 Rev 6
3
Operating features
3.1
Active power and Standby power modes
When Chip Select (S) is low, the device is selected and in the Active power mode.
When Chip Select (S) is high, the device is deselected. If a Write cycle is not currently in
progress, the device then goes in to the Standby power mode, and the device consumption
drops to ICC1, as specified in Table 12 and Table 13.
3.2
SPI modes
The device 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 3, 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 3. SPI modes supported



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