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RM0008
General-purpose and alternate-function I/Os (GPIOs and AFIOs)
Bits 11:10 TIM3_REMAP[1:0]: TIM3 remapping
These bits are set and cleared by software. They control the mapping of TIM3 channels 1 to
4 on the GPIO ports.
00: No remap (CH1/PA6, CH2/PA7, CH3/PB0, CH4/PB1)
01: Not used
10: Partial remap (CH1/PB4, CH2/PB5, CH3/PB0, CH4/PB1)
11: Full remap (CH1/PC6, CH2/PC7, CH3/PC8, CH4/PC9)
Note: TIM3_ETR on PE0 is not re-mapped.
Bits 9:8 TIM2_REMAP[1:0]: TIM2 remapping
These bits are set and cleared by software. They control the mapping of TIM2 channels 1 to
4 and external trigger (ETR) on the GPIO ports.
00: No remap (CH1/ETR/PA0, CH2/PA1, CH3/PA2, CH4/PA3)
01: Partial remap (CH1/ETR/PA15, CH2/PB3, CH3/PA2, CH4/PA3)
10: Partial remap (CH1/ETR/PA0, CH2/PA1, CH3/PB10, CH4/PB11)
11: Full remap (CH1/ETR/PA15, CH2/PB3, CH3/PB10, CH4/PB11)
Bits 7:6 TIM1_REMAP[1:0]: TIM1 remapping
These bits are set and cleared by software. They control the mapping of TIM2 channels 1 to
4, 1N to 3N, external trigger (ETR) and Break input (BKIN) on the GPIO ports.
00: No remap (ETR/PA12, CH1/PA8, CH2/PA9, CH3/PA10, CH4/PA11, BKIN/PB12,
CH1N/PB13, CH2N/PB14, CH3N/PB15)
01: Partial remap (ETR/PA12, CH1/PA8, CH2/PA9, CH3/PA10, CH4/PA11, BKIN/PA6,
CH1N/PA7, CH2N/PB0, CH3N/PB1)
10: not used
11: Full remap (ETR/PE7, CH1/PE9, CH2/PE11, CH3/PE13, CH4/PE14, BKIN/PE15,
CH1N/PE8, CH2N/PE10, CH3N/PE12)
Bits 5:4 USART3_REMAP[1:0]: USART3 remapping
These bits are set and cleared by software. They control the mapping of USART3 CTS,
RTS,CK,TX and RX alternate functions on the GPIO ports.
00: No remap (TX/PB10, RX/PB11, CK/PB12, CTS/PB13, RTS/PB14)
01: Partial remap (TX/PC10, RX/PC11, CK/PC12, CTS/PB13, RTS/PB14)
10: not used
11: Full remap (TX/PD8, RX/PD9, CK/PD10, CTS/PD11, RTS/PD12)
Bit 3 USART2_REMAP: USART2 remapping
This bit is set and cleared by software. It controls the mapping of USART2 CTS, RTS,CK,TX
and RX alternate functions on the GPIO ports.
0: No remap (CTS/PA0, RTS/PA1, TX/PA2, RX/PA3, CK/PA4)
1: Remap (CTS/PD3, RTS/PD4, TX/PD5, RX/PD6, CK/PD7)
Bit 2 USART1_REMAP: USART1 remapping
This bit is set and cleared by software. It controls the mapping of USART1 TX and RX
alternate functions on the GPIO ports.
0: No remap (TX/PA9, RX/PA10)
1: Remap (TX/PB6, RX/PB7)
Bit 1 I2C1_REMAP: I2C1 remapping
This bit is set and cleared by software. It controls the mapping of I2C1 SCL and SDA
alternate functions on the GPIO ports.
0: No remap (SCL/PB6, SDA/PB7)
1: Remap (SCL/PB8, SDA/PB9)
Doc ID 13902 Rev 9
161/995
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