Datasheet

 2018 Microchip Technology Inc. Data Sheet Complete DS40002058A-page 65
ATxmega128A1U/ATxmega64A1U
33.2 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
the first table where this apply.
Table 33-1. Port A - alternate functions.
Table 33-2. Port B - alternate functions.
Table 33-3. Port C - alternate functions.
PORTA PIN # INTERRUPT
ADCA POS
/GAINPOS
ADCB POS
ADCA
NEG
ADCA
GAINNEG
ACA
POS
ACA
NEG
ACA
OUT
DACA REFA
GND 93
AVCC 94
PA0 95 SYNC ADC0 ADC8 ADC0 AC0 AC0 AREF
PA1 96 SYNC ADC1 ADC9 ADC1 AC1 AC1
PA2 97 SYNC/ASYNC ADC2 ADC10 ADC2 AC2 DAC0
PA3 98 SYNC ADC3 ADC11 ADC3 AC3 AC3 DAC1
PA4 99 SYNC ADC4 ADC12 ADC4 AC4
PA5 100 SYNC ADC5 ADC13 ADC5 AC5 AC5
PA6 1 SYNC ADC6 ADC14 ADC6 AC6 AC1OUT
PA7 2 SYNC ADC7 ADC15 ADC7 AC7 AC0OUT
PORT B PIN# INTERRUPT ADCAPOS
ADCBPOS/
GAINPOS ADCB
NEG
ADCB
GAIN
NEG
ACB
POS
ACB
NEG
ACB
OUT
DACB REFB JTAG
GND 3
AVCC 4
PB0 5 SYNC ADC8 ADC0 ADC0 AC0 AC0 AREF
PB1 6 SYNC ADC9 ADC1 ADC1 AC1 AC1
PB2 7
SYNC/
ASYNC
ADC10 ADC2 ADC2 AC2 DAC0
PB3 8 SYNC ADC11 ADC3 ADC3 AC3 AC3 DAC1
PB4 9 SYNC ADC12 ADC4 ADC4 AC4 TMS
PB5 10 SYNC ADC13 ADC5 ADC5 AC5 AC5 TDI
PB6 11 SYNC ADC14 ADC6 ADC6 AC6 AC1OUT TCK
PB7 12 SYNC ADC15 ADC7 ADC7 AC7 AC0OUT TDO
PORT C PIN# INTERRUPT TCC0
(1)(2)
AWEXC TCC1 USARTC0
(3)
USARTC1 SPIC
(4)
TWIC CLOCKOUT
(5)
EVENTOUT
(6)
GND 13
VCC 14
PC0 15 SYNC OC0A OC0ALS SDA