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ManualsBrandsSTMICROELECTRONICS ManualsMicrocontrollers, Microprocessors & QuartzesEmbedded microcontroller UFQFN 32 (5x5) 8-Bit 16 MHz I/O number 28
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Alternate function remapping5.6
As shown in the rightmost column of the pin description table, some alternate functions can
be remapped at different I/O ports by programming one of eight AFR (alternate function
remap) option bits. When the remapping option is active, the default alternate function is no
longer available.
To use an alternate function, the corresponding peripheral must be enabled in the peripheral
registers.
Alternate function remapping does not effect GPIO capabilities of the I/O ports (see the GPIO
section of the family reference manual, RM0016).
DocID15590 Rev 826/116
STM8S903K3 STM8S903F3Pinout and pin description