Datasheet

Description
(1)
Option byte no.
0: AFR3 remapping option inactive: Default alternate function
(2)
.
1: Port C3 alternate function = TLI.
AFR2 Alternate function remapping option 2
Reserved.
(1)
Do not use more than one remapping option in the same port.
(2)
Refer to pinout description.
Table 15: STM8S903K3 alternate function remapping bits [1:0] for 32-pin packages
Alternate function mappingI/O portAFR0 option bit
value
AFR1 option bit
value
AFR1 and AFR0 remapping options inactive:
Default alternate functions
(1)
00
TIM5_CH1
PC510
TIM1_CH1PC6
TIM1_CH2PC7
SPI_NSS
PA301
TIM5_CH3PD2
TIM5_CH3PD2
11
TIM5_CH1PC5
TIM1_CH1PC6
TIM1_CH2PC7
TIM1_CH3NPC2
TIM1_CH2NPC1
TIM1_CH1NPE5
UART1_TXPA3
UART1_RXPF4
(1)
Refer to pinout description.
47/116DocID15590 Rev 8
Option bytesSTM8S903K3 STM8S903F3