Datasheet

50
XMEGA C4 [DATASHEET]
8493G–AVR–01/2014
29. Pinout and Pin Functions
The device pinout is shown in “Pinout/Block Diagram” on page 3. In addition to general purpose I/O functionality, each
pin can have several alternate functions. This will depend on which peripheral is enabled and connected to the actual pin.
Only one of the pin functions can be used at time.
29.1 Alternate Pin Function Description
The tables below show the notation for all pin functions available and describe its function.
29.1.1 Operation/Power Supply
29.1.2 Port Interrupt functions
29.1.3 Analog functions
29.1.4 Timer/Counter and AWEX functions
29.1.5 Communication functions
V
CC
Digital supply voltage
AV
CC
Analog 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
ACnOUT Analog Comparator n output
ADCn Analog to Digital Converter input pin n
A
REF
Analog Reference input pin
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
XCKn Transfer Clock for USART n
RXDn Receiver Data for USART n
TXDn Transmitter Data for USART n
SS Slave Select for SPI
MOSI Master Out Slave In for SPI
MISO Master In Slave Out for SPI