STM8S105C4 datasheet(49/121 Pages) STMICROELECTRONICS

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STM8S105x4/6

Option byte

8.1

Alternate function remapping bits

Table 13. Alternate function remapping bits [7:0] of OPT2

Option byte no.

Description(1)

1. Do not use more than one remapping option in the same port.

OPT2

AFR7

Alternate function remapping option 7

0: AFR7 remapping option inactive: Default alternate functions.(2)

1: Port D4 alternate function = BEEP.

AFR6

Alternate function remapping option 6

0: AFR6 remapping option inactive: Default alternate function.(2)

1: Port B5 alternate function = I2C_SDA; port B4 alternate function =

I2C_SCL.

AFR5

Alternate function remapping option 5

0: AFR5 remapping option inactive: Default alternate function.(2)

1: Port B3 alternate function = TIM1_ETR; port B2 alternate function =

TIM1_NCC3; port B1 alternate function = TIM1_CH2N; port B0 alternate

function = TIM1_CH1N.

AFR4

Alternate function remapping option 4

0: AFR4 remapping option inactive: Default alternate functions.(2)

1: Port D7 alternate function = TIM1_CH4.

AFR3

Alternate function remapping option 3

0: AFR3 remapping option inactive: Default alternate function.(2)

1: Port D0 alternate function = TIM1_BKIN.

AFR2

Alternate function remapping option 2

0: AFR2 remapping option inactive: Default alternate functions.(2)

1: Port D0 alternate function = CLK_CCO. Note: AFR2 option has priority

over AFR3 if both are activated.

AFR1

Alternate function remapping option 1

0: AFR1 remapping option inactive: Default alternate functions.(2)

1: Port A3 alternate function = TIM3_CH1; port D2 alternate function

TIM2_CH3

AFR0

Alternate function remapping option 0

0: AFR0 remapping option inactive: Default alternate functions.(2)

1: Port D3 alternate function = ADC_ETR.

2. Refer to STM8S105x4/6 pin descriptions.

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