Ordering information
OPT2 alternate function remapping for STM8S903F3
STM8S903K3 STM8S903F3
Do not use more than one remapping option in the same port.
AFR1, AFR0
[ ] 00: Remapping options inactive. Default alternate
functions used. Refer to pinout description.
(check only one option)
[ ] 01: Port C5 alternate function = TIM5_CH1, port
C6 alternate function = TIM1_CH1, and port C7
alternate function = TIM1_CH2.
[ ] 10: Port A3 alternate function = SPI_NSS and
port D2 alternate function = TIM5_CH3.
[ ] 11: Port D2 alternate function = TIM5_CH3, port
C5 alternate function = TIM5_CH1, port C6
alternate function = TIM1_CH1, port C7 alternate
function = TIM1_CH2, port E5 alternate function =
TIM1_CH1N, port A3 alternate function =
UART1_TX, and port F4 alternate function =
UART1_RX.
AFR2
Reserved
AFR3
[ ] 0: Remapping option inactive. Default alternate
functions used. Refer to pinout description.
(check only one option)
[ ] 1: Port C3 alternate function = TLI.
AFR4
[ ] 0: Remapping option inactive. Default alternate
functions used. Refer to pinout description.
(check only one option)
[ ] 1: Port B4 alternate function = ADC_ETR, port
B5 alternate function = TIM1_BKIN.
AFR5
AFR6
Reserved
Reserved
AFR7
[ ] 0: Remapping option inactive. Default alternate
functions used. Refer to pinout description.
(check only one option)
[ ] 1: Port C3 alternate function = TIM1_CH1N, port
C4 alternate function = TIM1_CH2N.
OPT3 watchdog
WWDG_HALT
[ ] 0: No reset generated on halt if WWDG active
[ ] 1: Reset generated on halt if WWDG active
(check only one option)
WWDG_HW
[ ] 0: WWDG activated by software
[ ] 1: WWDG activated by hardware
(check only one option)
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DocID15590 Rev 8
STMICROELECTRONICS [ ST ]
