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ST72561J4-Auto датащи(PDF) 150 Page - STMicroelectronics

номер детали ST72561J4-Auto
подробное описание детали  Clock, reset and supply management
PDF  324 Pages
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производитель  STMICROELECTRONICS [STMicroelectronics]
домашняя страница  http://www.st.com
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ST72561J4-Auto датащи(HTML) 150 Page - STMicroelectronics

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Serial peripheral interface (SPI)
ST72561-Auto
150/324
Doc ID 12370 Rev 8
MISO pin and the MOSI pin are directly connected between the master and the slave
device.
Note:
If CPOL is changed at the communication byte boundaries, the SPI must be disabled by
resetting the SPE bit.
Figure 74.
Data clock timing diagram
14.5
Error flags
14.5.1
Master mode fault (MODF)
Master mode fault occurs when the master device’s SS pin is pulled low.
When a Master mode fault occurs:
●
The MODF bit is set and an SPI interrupt request is generated if the SPIE bit is set.
●
The SPE bit is reset. This blocks all output from the device and disables the SPI
peripheral.
●
The MSTR bit is reset, thus forcing the device into slave mode.
SCK
MSBit
Bit 6
Bit 5
Bit 4
Bit3
Bit 2
Bit 1
LSBit
MSBit
Bit 6
Bit 5
Bit 4
Bit3
Bit 2
Bit 1
LSBit
MISO
(from master)
MOSI
(from slave)
SS
(to slave)
CAPTURE STROBE
CPHA = 1
MSBit
Bit 6
Bit 5
Bit 4
Bit3
Bit 2
Bit 1
LSBit
MSBit
Bit 6
Bit 5
Bit 4
Bit3
Bit 2
Bit 1
LSBit
MISO
(from master)
MOSI
SS
(to slave)
CAPTURE STROBE
CPHA = 0
Note: This figure should not be used as a replacement for parametric information.
Refer to the Electrical Characteristics chapter.
(from slave)
(CPOL = 1)
SCK
(CPOL = 0)
SCK
(CPOL = 1)
SCK
(CPOL = 0)



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