50
8068C–AVR–06/08
XMEGA A3
29.2 Alternate Pin Functions
The tables below show the main and alternate pin functions for all pins on each port. They also
show which peripheral that makes use of or enables the alternate pin function.
Table 29-1. Port A - Alternate functions
PORT A PIN # INTERRUPT ADCA POS ADCA NEG
ADAA
GAINPOS
ADCA
GAINNEG ACA POS ACA NEG ACA OUT REFA
GND 60
AVCC 61
PA0 62 SYNC ADC0 ADC0 ADC0 AC0 AC0 AREFA
PA1 63 SYNC ADC1 ADC1 ADC1 AC1 AC1
PA2 64 SYNC/ASYNC ADC2 ADC2 ADC2 AC2
PA3 1 SYNC ADC3 ADC3 ADC3 AC3 AC3
PA4 2 SYNC ADC4 ADC4 ADC4 AC4
PA5 3 SYNC ADC5 ADC5 ADC5 AC5 AC5
PA6 4 SYNC ADC6 ADC6 ADC6 AC6
PA7 5 SYNC ADC7 ADC7 ADC7 AC7 AC0 OUT
Table 29-2. Port B - Alternate functions
PORT B PIN # INTERRUPT
ADCB
POS
ADCB
NEG
ADCB
GAINPOS
ADCB
GAINNEG ACB POS ACB NEG ACB OUT DACB REFB JTAG
PB0 6 SYNC ADC0 ADC0 ADC0 AC0 AC0 AREFB
PB1 6 SYNC ADC1 ADC1 ADC1 AC1 AC1
PB2 8 SYNC/ASYNC ADC2 ADC2 ADC2 AC2 DAC0
PB3 9 SYNC ADC3 ADC3 ADC3 AC3 AC3 DAC1
PB4 10 SYNC ADC4 ADC4 ADC4 AC4 TMS
PB5 11 SYNC ADC5 ADC5 ADC5 AC5 AC5 TDI
PB6 12 SYNC ADC6 ADC6 ADC6 AC6 TCK
PB7 13 SYNC ADC7 ADC7 ADC7 AC7 AC0 OUT TDO
GND 14
VCC 15
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