4.2 32-pin VQFN/32-pin TQFP Pinout and Multiplexing


32-pin QFP	Pin name	A	B						C	D	E	F	G	H	I	J	Supply	Reset State
32-pin QFP	Pin name	EIC	REF	ADC0	ADC1	SDADC	AC	DAC	SERCOM	SERCOM-ALT	TC/TCC	TCC	PDEC	AC/ GCLK	CCL	CCL/PDEC	Supply	Reset State
1	PA00/ XIN32	EXTINT[0]								SERCOM1/PAD[0]	TCC2/WO[0]						VDDANA	I/O, HI-Z
2	PA01/ XOUT32	EXTINT[1]								SERCOM1/PAD[1]	TCC2/WO[1]						VDDANA	I/O, HI-Z
3	PA02	EXTINT[2]		AIN[0]				VOUT									VDDANA	I/O, HI-Z
4	PA03	EXTINT[3]	VREFA	AIN[1]													VDDANA	I/O, HI-Z
5	PA04	EXTINT[4]	VREFB	AIN[4]			AIN[0]			SERCOM0/PAD[0]	TCC0/WO[0]				CCL/IN[0]		VDDANA	I/O, HI-Z
6	PA05	EXTINT[5]		AIN[5]			AIN[1]			SERCOM0/PAD[1]	TCC0/WO[1]				CCL/IN[1]		VDDANA	I/O, HI-Z
7	PA06	EXTINT[6]		AIN[6]		INN[0]	AIN[2]			SERCOM0/PAD[2]	TCC1/WO[0]				CCL/IN[2]		VDDANA	I/O, HI-Z
8	PA07	EXTINT[7]		AIN[7]		INP[0]	AIN[3]			SERCOM0/PAD[3]	TCC1/WO[1]				CCL/OUT[0]	CCL/OUT[3]	VDDANA	I/O, HI-Z
9	VDDANA																VDDANA
10	GNDANA																GNDANA
11	PA08⁽¹⁾	NMI		AIN[8]	AIN[10]				SERCOM0/PAD[0]	SERCOM2/PAD[0]	TCC0/WO[0]	TCC1/WO[2]			CCL/IN[3]	PDEC[0]	VDDIO	I/O, HI-Z
12	PA09⁽¹⁾	EXTINT[9]		AIN[9]	AIN[11]				SERCOM0/PAD[1]	SERCOM2/PAD[1]	TCC0/WO[1]	TCC1/WO[3]			CCL/IN[4]	PDEC[1]	VDDIO	I/O, HI-Z
13	PA10⁽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]	VDDIO	I/O, HI-Z
14	PA11⁽²⁾	EXTINT[11]		AIN[11]					SERCOM0/PAD[3]	SERCOM2/PAD[3]	TCC1/WO[1]	TCC0/WO[3]		GCLK/IO[5]	CCL/OUT[1]		VDDIO	I/O, HI-Z
15	PA14/ XIN	EXTINT[14]							SERCOM2/PAD[2]		TC4/WO[0]	TCC0/WO[4]		GCLK/IO[0]			VDDIO	I/O, HI-Z
16	PA15/ XOUT	EXTINT[15]							SERCOM2/PAD[3]		TC4/WO[1]	TCC0/WO[5]		GCLK/IO[1]			VDDIO	I/O, HI-Z
17	PA16⁽¹⁾	EXTINT[0]							SERCOM1/PAD[0]	SERCOM3/PAD[0]	TCC2/WO[0]	TCC0/WO[6]	PDEC/QDI[0]	GCLK/IO[2]	CCL/IN[0]		VDDIO	I/O, HI-Z
18	PA17⁽¹⁾	EXTINT[1]							SERCOM1/PAD[1]	SERCOM3/PAD[1]	TCC2/WO[1]	TCC0/WO[7]	PDEC/QDI[1]	GCLK/IO[3]	CCL/IN[1]		VDDIO	I/O, HI-Z
19	PA18	EXTINT[2]							SERCOM1/PAD[2]	SERCOM3/PAD[2]	TC4/WO[0]	TCC0/WO[2]	PDEC/QDI[2]	AC/CMP[0]	CCL/IN[2]		VDDIO	I/O, HI-Z
20	PA19	EXTINT[3]							SERCOM1/PAD[3]	SERCOM3/PAD[3]	TC4/WO[1]	TCC0/WO[3]		AC/CMP[1]	CCL/OUT[0]		VDDIO	I/O, HI-Z
21	PA22⁽¹⁾	EXTINT[6]							SERCOM3/PAD[0]		TC0/WO[0]	TCC0/WO[4]		GCLK/IO[6]	CCL/IN[6]		VDDIO	I/O, HI-Z
22	PA23⁽¹⁾	EXTINT[7]							SERCOM3/PAD[1]		TC0/WO[1]	TCC0/WO[5]		GCLK/IO[7]	CCL/IN[7]		VDDIO	I/O, HI-Z
23	PA24	EXTINT[12]							SERCOM3/PAD[2]		TC1/WO[0]	TCC1/WO[2]			CCL/IN[8]		VDDIO	I/O, HI-Z
24	PA25	EXTINT[13]							SERCOM3/PAD[3]		TC1/WO[1]	TCC1/WO[3]			CCL/OUT[2]		VDDIO	I/O, HI-Z
25	PA27	EXTINT[15]												GCLK/IO[0]		CCL/IN[10]	VDDIN	I/O, HI-Z
26	RESET⁽³⁾																VDDIN	I, PU
27	PA28	EXTINT[8]												GCLK/IO[0]		CCL/IN[11]	VDDIN	I/O, HI-Z
28	GND																GND
29	VDDCORE
30	VDDIN																VDDIN
31	PA30/ SWCLK	EXTINT[10]								SERCOM1/PAD[2]	TCC1/WO[0]		SWCLK	GCLK/IO[0]	CCL/IN[3]		VDDIN	I/O, HI-Z
32	PA31/ SWDIO	EXTINT[11]								SERCOM1/PAD[3]	TCC1/WO[1]				CCL/OUT[1]		VDDIN	I/O, HI-Z
Note: PA08, PA09, 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. PA10, PA11 are high-sink pins and have different properties than all other GPIO. Refer to the electrical characteristics section for additional information. The RESET pin has the same properties as standard GPIO.