ATXMEGA128A4_1012 Datasheet, PDF (49/108 Pages) ATMEL Corporation – 8/16-bit XMEGA A4 Microcontroller

XMEGA A4
30. Pinout and Pin Functions
The pinout of XMEGA A4 is shown in ”Pinout/Block Diagram” on page 3. In addition to general
I/O functionality, each pin may have several functions. This will depend on which peripheral is
enabled and connected to the actual pin. Only one of the alternate pin functions can be used at
time.
30.1 Alternate Pin Functions Description
30.1.1
The tables below shows the notation for all pin functions available and describe their functions.
Operation/Power Supply
30.1.2
VCC
AVCC
GND
Port Interrupt functions
Digital supply voltage
Analog supply voltage
Ground
30.1.3
SYNC
ASYNC
Analog functions
Port pin with full synchronous and limited asynchronous interrupt function
Port pin with full synchronous and full asynchronous interrupt function
30.1.4
ACn
AC0OUT
ADCn
DACn
AREF
Analog Comparator input pin n
Analog Comparator 0 Output
Analog to Digital Converter input pin n
Digital to Analog Converter output pin n
Analog Reference input pin
Timer/Counter and AWEX functions
OCnx
OCnx
OCnxLS
OCnxHS
Output Compare Channel x for Timer/Counter n
Inverted Output Compare Channel x for Timer/Counter n
Output Compare Channel x Low Side for Timer/Counter n
Output Compare Channel x High Side for Timer/Counter n
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