RM0008
8.1.11
General-purpose and alternate-function I/Os (GPIOs and AFIOs)
Peripherals’ GPIO configurations
Table 19 to Table 29 give the GPIO configurations of the device peripherals.
Table 19.
Advanced timers TIM1/TIM8
TIM1/8 pinout
TIM1/8_CHx
TIM1/8_CHxN
TIM1/8_BKIN
TIM1/8_ETR
configuration
Input capture channel x
Output compare channel x
Complementary output channel x
Break input
External trigger timer input
GPIO configuration
Input floating
Alternate function push-pull
Alternate function push-pull
Input floating
Input floating
Table 20.
General-purpose timers TIM2/3/4/5
TIM2/3/4 pinout
TIM2/3/4/5_CHx
TIM2/3/4/5_ETR
Table 21.
USARTs
USART pinout
Configuration
Input capture channel x
Output compare channel x
External trigger timer input
Configuration
GPIO configuration
Input floating
Alternate function push-pull
Input floating
GPIO configuration
USARTx_TX
USARTx_RX
Full duplex
Half duplex synchronous mode
Full duplex
Half duplex synchronous mode
Alternate function push-pull
Alternate function push-pull
Input floating / Input pull-up
Not used. Can be used as a general IO
USARTx_CK
USARTx_RTS
USARTx_CTS
Table 22.
SPI
SPI pinout
Synchronous mode
Hardware flow control
Hardware flow control
Configuration
Alternate function push-pull
Alternate function push-pull
Input floating/ Input pull-up
GPIO configuration
SPIx_SCK
SPIx_MOSI
Master
Slave
Full duplex / Master
Full duplex / slave
Simplex bidirectional data wire / Master
Simplex bidirectional data wire/ Slave
Doc ID 13902 Rev 9
Alternate function push-pull
Input floating
Alternate function push-pull
Input floating / Input pull-up
Alternate function push-pull
Not used. Can be used as a GPIO
145/995
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