Datasheet

50
8116J–AVR–06/2013
XMEGA A3B
Not recommended for new designs -
Use ATxmega256A3BU
30. Pinout and Pin Functions
The pinout of XMEGA A3B 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 Function Description
The tables below shows the notation for all pin functions available and describes its function.
30.1.1 Operation/Power Supply
30.1.2 Port Interrupt functions
30.1.3 Analog functions
30.1.4 Timer/Counter and AWEX functions
30.1.5 Communication functions
VCC Digital supply voltage
AVCC Analog supply voltage
VBAT Battery Backup Module supply voltage
GND Ground
SYNC Port pin with full synchronous and limited asynchronous interrupt function
ASYNC Port pin with full synchronous and full asynchronous interrupt function
ACn Analog Comparator input pin n
AC0OUT Analog Comparator 0 Output
ADCn Analog to Digital Converter input pin n
DACn Digital to Analog Converter output pin n
AREF Analog Reference input pin
OCnx Output Compare Channel x for Timer/Counter n
OCnx
Inverted Output Compare Channel x for Timer/Counter n
OCnxLS Output Compare Channel x Low Side for Timer/Counter n
OCnxHS Output Compare Channel x High Side for Timer/Counter n
SCL Serial Clock for TWI
SDA Serial Data for TWI
SCLIN Serial Clock In for TWI when external driver interface is enabled
SCLOUT Serial Clock Out for TWI when external driver interface is enabled