Datasheet

52
8116J–AVR–06/2013
XMEGA A3B
Not recommended for new designs -
Use ATxmega256A3BU
30.2 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.
Table 30-1. Port A - Alternate functions
PORT A PIN # INTERRUPT ADCA
POS
ADCA
NEG
ADCA
GAINPOS
ADCA
GAINNEG
ACA
POS
ACA
NEG
ACA
OUT
REFA
GND 60
AVCC 61
PA0 62 SYNC ADC0 ADC0 ADC0 AC0 AC0 AREF
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 AC0OUT
Table 30-2. 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 AREF
PB1 7 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 AC0OUT TDO
Table 30-3. Port C - Alternate functions
PORT C PIN # INTERRUPT TCC0 AWEXC TCC1 USARTC0 USARTC1 SPIC TWIC
CLOCKOU
T EVENTOUT
GND 14
VCC 15
PC0 16 SYNC OC0A OC0ALS SDA/SDA_IN
PC1 17 SYNC OC0B OC0AHS XCK0 SCL/SCL_IN
PC2 18 SYNC/ASYNC OC0C OC0BLS RXD0 SDA_OUT
PC3 19 SYNC OC0D OC0BHS TXD0 SCL_OUT
PC4 20 SYNC OC0CLS OC1A SS