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RM0008
23.2
23.2.1
SPI and I 2 S main features
SPI features
Serial peripheral interface (SPI)
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Full-duplex synchronous transfers on three lines
Simplex synchronous transfers on two lines with or without a bidirectional data line
8- or 16-bit transfer frame format selection
Master or slave operation
Multimaster mode capability
8 master mode baud rate prescalers (f PCLK /2 max.)
Slave mode frequency (f PCLK /2 max)
Faster communication for both master and slave
NSS management by hardware or software for both master and slave: dynamic change
of master/slave operations
Programmable clock polarity and phase
Programmable data order with MSB-first or LSB-first shifting
Dedicated transmission and reception flags with interrupt capability
SPI bus busy status flag
Hardware CRC feature for reliable communication:
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CRC value can be transmitted as last byte in Tx mode
Automatic CRC error checking for last received byte
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Master mode fault, overrun and CRC error flags with interrupt capability
1-byte transmission and reception buffer with DMA capability: Tx and Rx requests
Doc ID 13902 Rev 9
587/995
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