4.4 48-pin VQFN/48-pin TQFP Pinout and Multiplexing

48-pin QFNPin nameABCDEFGHIJSupplyReset State
EICREFADC0ADC1SDADCACDACSERCOMSERCOM-ALTTC/TCCTCCPDECAC/

GCLK

CCLCCL/PDEC
1PA00/

XIN32

EXTINT[0] SERCOM1/PAD[0]TCC2/WO[0] VDDANAI/O, HI-Z
2PA01/

XOUT32

EXTINT[1] SERCOM1/PAD[1]TCC2/WO[1] VDDANAI/O, HI-Z
3PA02EXTINT[2] AIN[0] VOUT VDDANAI/O, HI-Z
4PA03EXTINT[3]VREFAAIN[1] VDDANAI/O, HI-Z
5GNDANAGNDANA
6VDDANAVDDANA
7PB08EXTINT[8] AIN[2]AIN[4]INN[1] TC0/WO[0] CCL/IN[8] VDDANAI/O, HI-Z
8PB09EXTINT[9] AIN[3]AIN[5]INP[1] TC0/WO[1] CCL/OUT[2] VDDANAI/O, HI-Z
9PA04EXTINT[4]VREFBAIN[4] AIN[0] SERCOM0/PAD[0]TCC0/WO[0] CCL/IN[0] VDDANAI/O, HI-Z
10PA05EXTINT[5] AIN[5] AIN[1] SERCOM0/PAD[1]TCC0/WO[1] CCL/IN[1] VDDANAI/O, HI-Z
11PA06EXTINT[6] AIN[6] INN[0]AIN[2] SERCOM0/PAD[2]TCC1/WO[0] CCL/IN[2] VDDANAI/O, HI-Z
12PA07EXTINT[7] AIN[7] INP[0]AIN[3] SERCOM0/PAD[3]TCC1/WO[1] CCL/OUT[0]CCL/OUT[3]VDDANAI/O, HI-Z
13PA08(1)NMI AIN[8]AIN[10] SERCOM0/PAD[0]SERCOM2/PAD[0]TCC0/WO[0]TCC1/WO[2] CCL/IN[3]PDEC[0]VDDIOI/O, HI-Z
14PA09(1)EXTINT[9] AIN[9]AIN[11] SERCOM0/PAD[1]SERCOM2/PAD[1]TCC0/WO[1]TCC1/WO[3] CCL/IN[4]PDEC[1]VDDIOI/O, HI-Z
15PA10(2)EXTINT[10] AIN[10] SERCOM0/PAD[2]SERCOM2/PAD[2]TCC1/WO[0]TCC0/WO[2] GCLK/IO[4]CCL/IN[5]PDEC[2]VDDIOI/O, HI-Z
16PA11(2)EXTINT[11] AIN[11] SERCOM0/PAD[3]SERCOM2/PAD[3]TCC1/WO[1]TCC0/WO[3] GCLK/IO[5]CCL/OUT[1] VDDIOI/O, HI-Z
17VDDIOVDDIO
18GNDGND
19PB10(2)EXTINT[10] TC1/WO[0]TCC0/WO[4] GCLK/IO[4]CCL/IN[5] VDDIOI/O, HI-Z
20PB11(2)EXTINT[11] TC1/WO[1]TCC0/WO[5] GCLK/IO[5]CCL/OUT[1] VDDIOI/O, HI-Z
21PA12(1)EXTINT[12] SERCOM2/PAD[0] TCC2/WO[0]TCC0/WO[6] AC/CMP[0] CCL/OUT[3]VDDIOI/O, HI-Z
22PA13(1)EXTINT[13] SERCOM2/PAD[1] TCC2/WO[1]TCC0/WO[7] AC/CMP[1] VDDIOI/O, HI-Z
23PA14/

XIN

EXTINT[14] SERCOM2/PAD[2] TC4/WO[0]TCC0/WO[4] GCLK/IO[0] VDDIOI/O, HI-Z
24PA15/

XOUT

EXTINT[15] SERCOM2/PAD[3] TC4/WO[1]TCC0/WO[5] GCLK/IO[1] VDDIOI/O, HI-Z
25PA16(1)EXTINT[0] SERCOM1/PAD[0]SERCOM3/PAD[0]TCC2/WO[0]TCC0/WO[6]PDEC/QDI[0]GCLK/IO[2]CCL/IN[0] VDDIOI/O, HI-Z
26PA17(1)EXTINT[1] SERCOM1/PAD[1]SERCOM3/PAD[1]TCC2/WO[1]TCC0/WO[7]PDEC/QDI[1]GCLK/IO[3]CCL/IN[1] VDDIOI/O, HI-Z
27PA18EXTINT[2] SERCOM1/PAD[2]SERCOM3/PAD[2]TC4/WO[0]TCC0/WO[2]PDEC/QDI[2]AC/CMP[0]CCL/IN[2] VDDIOI/O, HI-Z
28PA19EXTINT[3] SERCOM1/PAD[3]SERCOM3/PAD[3]TC4/WO[1]TCC0/WO[3] AC/CMP[1]CCL/OUT[0] VDDIOI/O, HI-Z
29PA20EXTINT[4] SERCOM3/PAD[2]TC3/WO[0]TCC0/WO[6] GCLK/IO[4] VDDIOI/O, HI-Z
30PA21EXTINT[5] SERCOM3/PAD[3] TC3/WO[1]TCC0/WO[7] GCLK/IO[5] CCL/IN[9]VDDIOI/O, HI-Z
31PA22(1)EXTINT[6] SERCOM3/PAD[0] TC0/WO[0]TCC0/WO[4] GCLK/IO[6]CCL/IN[6] VDDIOI/O, HI-Z
32PA23(1)EXTINT[7] SERCOM3/PAD[1] TC0/WO[1]TCC0/WO[5] GCLK/IO[7]CCL/IN[7] VDDIOI/O, HI-Z
33PA24EXTINT[12] SERCOM3/PAD[2] TC1/WO[0]TCC1/WO[2] CCL/IN[8] VDDIOI/O, HI-Z
34PA25EXTINT[13] SERCOM3/PAD[3] TC1/WO[1]TCC1/WO[3] CCL/OUT[2] VDDIOI/O, HI-Z
35GNDGND
36VDDIOVDDIO
37PB22EXTINT[6] TC3/WO[0] GCLK/IO[0]CCL/IN[0] VDDIOI/O, HI-Z
38PB23EXTINT[7] TC3/WO[1] GCLK/IO[1]CCL/OUT[0] VDDIOI/O, HI-Z
39PA27EXTINT[15] GCLK/IO[0] CCL/IN[10]VDDINI/O, HI-Z
40RESET(3) VDDINI, PU
41PA28EXTINT[8] GCLK/IO[0] CCL/IN[11]VDDINI/O, HI-Z
42GNDGND
43VDDCORE
44VDDINVDDIN
45PA30/

SWCLK

EXTINT[10] SERCOM1/PAD[2]TCC1/WO[0] SWCLKGCLK/IO[0]CCL/IN[3] VDDINSWCLK, I, PU
46PA31/

SWDIO

EXTINT[11] SERCOM1/PAD[3]TCC1/WO[1] CCL/OUT[1] VDDINI/O, HI-Z
47PB02EXTINT[2] AIN[2] TC2/WO[0] CCL/OUT[0] VDDANAI/O, HI-Z
48PB03EXTINT[3] AIN[3] TC2/WO[1] VDDANAI/O, HI-Z
Note:
  1. PA08, PA09, PA12, PA13, PA16, PA17, PA22, PA23 are TWIHS pins and have the same properties as standard pins when not used as SERCOM I2C pins. Refer to the Electrical Characteristics section for additional information.
  2. PA10, PA11, PB10, PB11 are high-sink pins and have different properties than all other GPIO. Refer to the electrical characteristics section for additional information.
  3. The RESET pin has the same properties as standard GPIO.