Datasheet

55
XMEGA A3U [DATASHEET]
Atmel-8386D-AVR-ATxmega64A3U-128A3U-192A3U-256A3U–03/2014
32.2 Alternate Pin Functions
The tables below show the primary/default function for each pin on a port in the first column, the pin number in the
second column, and then all alternate pin functions in the remaining columns. The head row shows what peripheral that
enable and use the alternate pin functions.
For better flexibility, some alternate functions also have selectable pin locations for their functions, this is noted under the
first table where this apply.
Table 32-1. Port A - alternate functions.
Table 32-2. Port B - alternate functions.
PORTA PIN# INTERRUPT ADCAPOS/
GAINPOS
ADCA
NEG
ADCA
GAINNEG
ACA
POS
ACA
NEG
ACA
OUT
REFA
GND 60
AVCC 61
PA0 62 SYNC ADC0 ADC0 AC0 AC0 AREF
PA1 63 SYNC ADC1 ADC1 AC1 AC1
PA2 64
SYNC/
ASYNC
ADC2 ADC2 AC2
PA3 1 SYNC ADC3 ADC3 AC3 AC3
PA4 2 SYNC ADC4 ADC4 AC4
PA5 3 SYNC ADC5 ADC5 AC5 AC5
PA6 4 SYNC ADC6 ADC6 AC6 AC1OUT
PA7 5 SYNC ADC7 ADC7 AC7 AC0OUT
PORTB PIN# INTERRUPT ADCAPOS/
GAINPOS
ADCBPOS/
GAINPOS
ADCB
NEG
ADCB
GAINNEG
ACB
POS
ACB
NEG
ACBOUT DACB REFB JTAG
PB0 6 SYNC ADC8 ADC0 ADC0 AC0 AC0 AREF
PB1 7 SYNC ADC9 ADC1 ADC1 AC1 AC1
PB2 8
SYNC/
ASYNC
ADC10 ADC2 ADC2 AC2 DAC0
PB3 9 SYNC ADC11 ADC3 ADC3 AC3 AC3 DAC1
PB4 10 SYNC ADC12 ADC4 ADC4 AC4 TMS
PB5 11 SYNC ADC13 ADC5 ADC5 AC5 AC5 TDI
PB6 12 SYNC ADC14 ADC6 ADC6 AC6 AC1OUT TCK
PB7 13 SYNC ADC15 ADC7 ADC7 AC7 AC0OUT TDO
GND 14
VCC 15