5.1 Multiplexed Signals

Table 5-1. PORT Function Multiplexing
QFN 24-pinQFN 20-pinSOIC 20-pinSOIC 14-pinPin Name (1,2)Other/SpecialADC0ADC1PTC(3)AC0AC1AC2DAC0USART0SPI0TWI0TCA0TCBn TCD0CCL
23191610PA0

RESET
UPDI

AIN0LUT0-IN0
24201711PA1BREAKAIN1TXDMOSISDALUT0-IN1
111812PA2EVOUT0AIN2RxDMISOSCLLUT0-IN2
221913PA3EXTCLKAIN3XCKSCKWO3TCB1 WO
332014GND
4411VDD
5522PA4AIN4AIN0X0/Y0XDIRSSWO4WOALUT0-OUT
6633PA5VREFAAIN5AIN1X1/Y1OUTAINN0WO5TCB0 WOWOB
7744PA6AIN6AIN2X2/Y2AINN0AINP1AINP0OUT
8855PA7AIN7AIN3X3/Y3AINP0AINP0AINN0LUT1-OUT
9PB7AIN4AINN1AINP3
10PB6AIN5AINP3AINN1
1196PB5CLKOUTAIN8

X12/Y12

AINP1AINP2WO2
12107PB4AIN9X13/Y13AINN1AINP3WO1LUT0-OUT
131186PB3

TOSC1

OUTRxDWO0
141297PB2TOSC2, EVOUT1OUTTxDWO2
1513108PB1AIN10X4/Y4AINP2XCKSDAWO1
1614119PB0AIN11X5/Y5AINP2AINP1XDIRSCLWO0
171512PC0AIN6X6/Y6SCKTCB0 WOWOC
181613PC1AIN7X7/Y7MISOWODLUT1-OUT
191714PC2EVOUT2AIN8X9/Y8MOSI
201815PC3AIN9X9/Y9SSWO3LUT1-IN0
21PC4BREAKAIN10X10/Y10WO4 TCB1 WOLUT1-IN1
22PC5AIN11X11/Y11WO5LUT1-IN2
Note:
  1. Pins names are of type Pxn, with x being the PORT instance (A,B) and n the pin number. Notation for signals is PORTx_PINn. All pins can be used as event input.
  2. All pins can be used for external interrupt, where pins Px2 and Px6 of each port have full asynchronous detection.
  3. Every PTC line can be configured as X-line or Y-line.
Tip: Signals on alternative pin locations are in typewriter font.