Datasheet

50
8069R–AVR–06/2013
XMEGA A4
Not recommended for new designs -
Use XMEGA A4U series
30.1.5 Communication functions
30.1.6 Oscillators, Clock and Event
30.1.7 Debug/System functions
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
SCK Serial Clock for SPI
TOSCn Timer Oscillator pin n
XTALn Input/Output for inverting Oscillator pin n
RESET
Reset pin
PDI_CLK Program and Debug Interface Clock pin
PDI_DATA Program and Debug Interface Data pin