17.3.3 USARTn Pin Position

Name: USARTROUTEA
Offset: 0x02
Reset: 0x00
Property: -

Bit 76543210 
    USART1[1:0]USART0[2:0] 
Access R/WR/WR/W 
Reset 000 

Bits 4:3 – USART1[1:0] USART 1 Signals

This bit field controls the pin positions for USART 1 signals.

Value Name Description
TxD RxD XCK XDIR
0x0 DEFAULT PC0 PC1 PC2 PC3
0x1 ALT1 PC4 PC5 PC6 PC7
0x2 ALT2 PD6 PD7 - -
0x3 NONE Not pin connection

Bits 4:2 – USART0[2:0] USART 0 Signals

This bit field controls the pin positions for USART 0 signals.

Value Name Description
TxD RxD XCK XDIR
0x0 DEFAULT PA0 PA1 PA2 PA3
0x1 ALT1 PA4 PA5 PA6 PA7
0x2 ALT2 PA2 PA3 - -
0x3 ALT3 PD4 PD5 PD6 PD7
0x4 ALT4 PC1 PC2 PC3 -
0x5 NONE Not pin connection