Spi Main Features; Spi Features - ST STM32F100 Series Reference Manual

RM0041
21.2

SPI main features

21.2.1

SPI features

•
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
•
Slave mode frequency (f
•
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:
–
–
•
Master mode fault, overrun and CRC error flags with interrupt capability
•
1-byte transmission and reception buffer with DMA capability: Tx and Rx requests
PCLK
CRC value can be transmitted as last byte in Tx mode
Automatic CRC error checking for last received byte
/2 max.)
PCLK
/2 max)
RM0041 Rev 6
Serial peripheral interface (SPI)
537/709
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