5 Signal Description

Table 5-1. ADC Pinout I/O Descriptions (Peripheral Function B)
PIN NAME	PIN NUMBER			PIN TYPE	FUNCTION TYPE	DESCRIPTION
PIN NAME	32-pin	48-pin	64-pin	PIN TYPE	FUNCTION TYPE	DESCRIPTION
ADC0_AIN0	3	3	3	I	Analog	ADC module 0 analog inputs
ADC0_AIN1	4	4	4	I	Analog
ADC0_AIN2	---	7	11	I	Analog
ADC0_AIN3	---	8	12	I	Analog
ADC0_AIN4	5	9	13	I	Analog
ADC0_AIN5	6	10	14	I	Analog
ADC0_AIN6	7	11	15	I	Analog
ADC0_AIN7	8	12	16	I	Analog
ADC0_AIN8	---	---	61	I	Analog
ADC0_AIN9	---	---	62	I	Analog
ADC0_AIN10	---	47	63	I	Analog
ADC0_AIN11	---	48	64	I	Analog
ADC0_AIN12	---	---	5	I	Analog
ADC0_AIN13	---	---	6	I	Analog
ADC0_AIN14	---	---	9	I	Analog
ADC0_AIN15	---	---	10	I	Analog
ADC0_AIN16	11	13	17	I	Analog
ADC0_AIN17	12	14	18	I	Analog
ADC0_AIN18	13	15	19	I	Analog
ADC0_AIN19	14	16	20	I	Analog

Table 5-2. Analog Comparator Pinout Descriptions (Peripheral Function B/H)
PIN NAME	PIN NUMBER			PIN TYPE	FUNCTION TYPE	DESCRIPTION
PIN NAME	32-pin	48-pin	64-pin	PIN TYPE	FUNCTION TYPE	DESCRIPTION
AC_AIN0	5	9	13	I	Analog	Comparator 0 and 1 external analog inputs
AC_AIN1	6	10	14	I	Analog
AC_AIN2	7	11	15	I	Analog
AC_AIN3	8	12	16	I	Analog
AC_CMP0	19	21 / 27	29 / 37	O	CMOS	Comparator 0 Output
AC_CMP1	20	22 / 28	30 / 38	O	CMOS	Comparator 1 Output

Table 5-3. Generic Clock Pinout I/O Descriptions (Peripheral Function H)
PIN NAME	PIN NUMBER			PIN TYPE	FUNCTION TYPE	DESCRIPTION
PIN NAME	32-pin	48-pin	64-pin	PIN TYPE	FUNCTION TYPE	DESCRIPTION
GCLK_IO[0]	15 / 25 / 27 / 31	23 / 37 / 39 / 41 / 45	27 / 31 / 49 / 51 / 53 / 57	I	ST	Ext GCLK[7:0] I/O pin Input clock source
GCLK_IO[1]	16	24 / 38	28 / 32 / 50	I	ST
GCLK_IO[2]	17	25	35 / 39	I	ST
GCLK_IO[3]	18	26	36 / 40	I	ST
GCLK_IO[4]	13	15 / 19 / 29	19 / 23 / 41	I	ST
GCLK_IO[5]	14	16 / 20 / 30	20 / 24 / 42	I	ST
GCLK_IO[6]	21	31	25 / 43	I	ST
GCLK_IO[7]	22	32	26 / 44	I	ST

Table 5-4. External Interrupts Pinout I/O Descriptions (Peripheral Function A)
PIN NAME	PIN NUMBER			PIN TYPE	FUNCTION TYPE	DESCRIPTION
PIN NAME	32-pin	48-pin	64-pin	PIN TYPE	FUNCTION TYPE	DESCRIPTION
EIC_EXTINT[0]	1 / 17	1 / 25	1 / 35 / 39 / 61	I	ST	External Interrupt 0 input
EIC_EXTINT[1]	2 / 18	2 / 26	2 / 36 / 40 / 62	I	ST	External Interrupt 1 input
EIC_EXTINT[2]	3 / 19	3 / 27 / 47	3 / 37 / 63	I	ST	External Interrupt 2 input
EIC_EXTINT[3]	4 / 20	4 / 28 / 48	4 / 38 / 64	I	ST	External Interrupt 3 input
EIC_EXTINT[4]	5	9 / 29	5 / 13 / 41	I	ST	External Interrupt 4 input
EIC_EXTINT[5]	6	10 / 30	6 / 14 /42	I	ST	External Interrupt 5 input
EIC_EXTINT[6]	7 / 21	11 / 31 / 37	9 / 15 / 43 / 49	I	ST	External Interrupt 6 input
EIC_EXTINT[7]	8 / 22	12 / 32 / 38	10 / 16 / 44 / 50	I	ST	External Interrupt 7 input
EIC_EXTINT[8]	27	7 / 41	11 / 53	I	ST	External Interrupt 8 input
EIC_EXTINT[9]	12	8 / 14	12 / 18	I	ST	External Interrupt 9 input
EIC_EXTINT[10]	13 / 31	15 / 19 / 45	19 / 23 / 57	I	ST	External Interrupt 10 input
EIC_EXTINT[11]	14 / 32	16 / 20 / 46	20 / 24 / 58	I	ST	External Interrupt 11 input
EIC_EXTINT[12]	23	21 / 33	25 / 29 / 45	I	ST	External Interrupt 12 input
EIC_EXTINT[13]	24	22 / 34	26 / 30 /46	I	ST	External Interrupt 13 input
EIC_EXTINT[14]	15	23	27 / 31 / 59	I	ST	External Interrupt 14 input
EIC_EXTINT[15]	16 / 25	24 / 39	28 / 32 / 51 / 60	I	ST	External Interrupt 15 input

Table 5-5. Port A and Port B Pinout I/O Descriptions
PIN NAME	PIN NUMBER			PIN TYPE	FUNCTION TYPE	DESCRIPTION
PIN NAME	32-pin	48-pin	64-pin	PIN TYPE	FUNCTION TYPE	DESCRIPTION
PA00	1	1	1	I/O	ST / CMOS	I/O Port A pins
PA01	2	2	2	I/O	ST / CMOS
PA02	3	3	3	I/O	ST / CMOS
PA03	4	4	4	I/O	ST / CMOS
PA04	5	9	13	I/O	ST / CMOS
PA05	6	10	14	I/O	ST / CMOS
PA06	7	11	15	I/O	ST / CMOS
PA07	8	12	16	I/O	ST / CMOS
PA08	11	13	17	I/O	ST / CMOS
PA09	12	14	18	I/O	ST / CMOS
PA10	13	15	19	I/O	ST / CMOS
PA11	14	16	20	I/O	ST / CMOS
PA12	---	21	29	I/O	ST / CMOS
PA13	---	22	30	I/O	ST / CMOS
PA14	15	23	31	I/O	ST / CMOS
PA15	16	24	32	I/O	ST / CMOS
PA16	17	25	35	I/O	ST / CMOS	I/O Port A pins
PA17	18	26	36	I/O	ST / CMOS
PA18	19	27	37	I/O	ST / CMOS
PA19	20	28	38	I/O	ST / CMOS
PA20	---	29	41	I/O	ST / CMOS
PA21	---	30	42	I/O	ST / CMOS
PA22	21	31	43	I/O	ST / CMOS
PA23	22	32	44	I/O	ST / CMOS
PA24	23	33	45	I/O	ST / CMOS
PA25	24	34	46	I/O	ST / CMOS
PA26	---	---	---	I/O	ST / CMOS
PA27	25	39	51	I/O	ST / CMOS
PA28	27	41	53	I/O	ST / CMOS
PA29	---	---	---	I/O	ST / CMOS
PA30	31	45	57	I/O	ST / CMOS
PA31	32	46	58	I/O	ST / CMOS
PB00	---	---	61	I/O	ST / CMOS	I/O Port B pins
PB01	---	---	62	I/O	ST / CMOS
PB02	---	47	63	I/O	ST / CMOS
PB03	---	48	64	I/O	ST / CMOS
PB04	---	---	5	I/O	ST / CMOS
PB05	---	---	6	I/O	ST / CMOS
PB06	---	---	9	I/O	ST / CMOS
PB07	---	---	10	I/O	ST / CMOS
PB08	---	7	11	I/O	ST / CMOS
PB09	---	8	12	I/O	ST / CMOS
PB10	---	19	23	I/O	ST / CMOS
PB11	---	20	24	I/O	ST / CMOS
PB12	---	---	25	I/O	ST / CMOS
PB13	---	---	26	I/O	ST / CMOS
PB14	---	---	27	I/O	ST / CMOS
PB15	---	---	28	I/O	ST / CMOS
PB16	---	---	39	I/O	ST / CMOS	I/O Port B pins
PB17	---	---	40	I/O	ST / CMOS
PB18	---	---	---	I/O	ST / CMOS
PB19	---	---	---	I/O	ST / CMOS
PB20	---	---	---	I/O	ST / CMOS
PB21	---	---	---	I/O	ST / CMOS
PB22	---	37	49	I/O	ST / CMOS
PB23	---	38	50	I/O	ST / CMOS
PB24	---	---	---	I/O	ST / CMOS
PB25	---	---	---	I/O	ST / CMOS
PB26	---	---	---	I/O	ST / CMOS
PB27	---	---	---	I/O	ST / CMOS
PB28	---	---	---	I/O	ST / CMOS
PB29	---	---	---	I/O	ST / CMOS
PB30	---	---	59	I/O	ST / CMOS
PB31	---	---	60	I/O	ST / CMOS

Table 5-6. TC0 Through TC7 Pinout I/O Descriptions (Peripheral Functions E/F)
PIN NAME	PIN NUMBER			PIN TYPE	FUNCTION TYPE	DESCRIPTION
PIN NAME	32-pin	48-pin	64-pin	PIN TYPE	FUNCTION TYPE	DESCRIPTION
TC0_WO[0]	5 / 11	9 / 13	13 / 17 / 59	I/O	ST / CMOS	TC 0 Waveform Outputs
TC0_WO[1]	6 / 12	10 / 14	14 / 18 / 60	I/O	ST / CMOS	TC 0 Waveform Outputs
TC1_WO[0]	7 / 13 / 31	11 / 15 / 45	15 / 19 / 57	I/O	ST / CMOS	TC 1 Waveform Outputs
TC1_WO[1]	8 / 14 / 32	12 / 16 / 46	16 / 20 / 58	I/O	ST / CMOS	TC 1 Waveform Outputs
TC2_WO[0]	1 / 17	1 / 21 / 25	1 / 29 / 35	I/O	ST / CMOS	TC 2 Waveform Outputs
TC2_WO[1]	2 / 18	2 / 22 / 26	2 / 30 / 36	I/O	ST / CMOS	TC 2 Waveform Outputs
TC3_WO[0]	15 / 19	23 / 27	31 / 37	I/O	ST / CMOS	TC 3 Waveform Outputs
TC3_WO[1]	16 / 20	24 / 28	32 / 38	I/O	ST / CMOS	TC 3 Waveform Outputs
TC4_WO[0]	21	7 / 31	11 / 25 / 43	I/O	ST / CMOS	TC 4 Waveform Outputs
TC4_WO[1]	22	8 / 32	12 / 26 / 44	I/O	ST / CMOS	TC 4 Waveform Outputs
TC5_WO[0]	23	19 / 33	23 / 27 / 45	I/O	ST / CMOS	TC 5 Waveform Outputs
TC5_WO[1]	24	20 / 34	24 / 28 / 46	I/O	ST / CMOS	TC 5 Waveform Outputs
TC6_WO[0]	—	—	39 / 63	I/O	ST / CMOS	TC 6 Waveform Outputs
TC6_WO[1]	—	—	40 / 64	I/O	ST / CMOS	TC 6 Waveform Outputs
TC7_WO[0]	—	—	41 / 49 / 61	I/O	ST / CMOS	TC 7 Waveform Outputs
TC7_WO[1]	—	—	42 / 50 / 62	I/O	ST / CMOS	TC 7 Waveform Outputs

Table 5-7. SERCOM0 Through SERCOM5 Pinout I/O Descriptions (Peripheral Function C/D)
PIN NAME	PIN NUMBER			PIN TYPE	FUNCTION TYPE	DESCRIPTION
PIN NAME	32-pin	48-pin	64-pin	PIN TYPE	FUNCTION TYPE	DESCRIPTION
SERCOM0_PAD[0]	5 / 11	9 / 13	13 / 17	I/O	ST/CMOS	—
SERCOM0_PAD1	6 / 12	10 / 14	14 / 18	I/O	ST/CMOS	—
SERCOM0_PAD2	7 / 13	11 / 15	15 / 19	I/O	ST/CMOS	—
SERCOM0_PAD3	8 / 14	12 / 16	16 / 20	I/O	ST/CMOS	—
SERCOM1_PAD0	1 / 17	1 / 25	1 / 35	I/O	ST/CMOS	—
SERCOM1_PAD1	2 / 18	2 / 26	2 / 36	I/O	ST/CMOS	—
SERCOM1_PAD2	19 / 31	27 / 45	37 / 57	I/O	ST/CMOS	—
SERCOM1_PAD3	20 / 32	28 / 46	38 / 58	I/O	ST/CMOS	—
SERCOM2_PAD0	11	13 / 21	17 / 29	I/O	ST/CMOS	—
SERCOM2_PAD1	12	14 / 22	18 / 30	I/O	ST/CMOS	—
SERCOM2_PAD2	13 / 15	15 / 23	19 / 31	I/O	ST/CMOS	—
SERCOM2_PAD3	14 / 16	16 / 24	20 / 32	I/O	ST/CMOS	—
SERCOM3_PAD0	17 / 21	25 / 31	35 / 43	I/O	ST/CMOS	—
SERCOM3_PAD1	18 / 22	26 / 32	36 / 44	I/O	ST/CMOS	—
SERCOM3_PAD2	19 / 23	27 / 29 / 33	37 / 41 / 45	I/O	ST/CMOS	—
SERCOM3_PAD3	20 / 24	28 / 30 / 34	38 / 42 / 46	I/O	ST/CMOS	—
SERCOM4_PAD0	—	7 / 21	11 / 25 / 29	I/O	ST/CMOS	—
SERCOM4_PAD1	—	8 / 22	12 / 26 / 30	I/O	ST/CMOS	—
SERCOM4_PAD2	—	19 / 23	23 / 27 / 31	I/O	ST/CMOS	—
SERCOM4_PAD3	—	20 / 24	24 / 28 / 32	I/O	ST/CMOS	—
SERCOM5_PAD0	—	31 / 47	39 / 43 / 59 / 63	I/O	ST/CMOS	—
SERCOM5_PAD1	—	32 / 48	40 / 44 / 60 / 64	I/O	ST/CMOS	—
SERCOM5_PAD2	—	29 / 33 / 37	41 / 45 / 49 / 61	I/O	ST/CMOS	—
SERCOM5_PAD3	—	30 / 34 / 39	42 / 46 / 50 / 62	I/O	ST/CMOS	—

Table 5-8. Power, Ground, and Voltage Reference Pinout I/O Descriptions
PIN NAME	PIN NUMBER			PIN TYPE	FUNCTION TYPE	DESCRIPTION
PIN NAME	32-pin	48-pin	64-pin	PIN TYPE	FUNCTION TYPE	DESCRIPTION
AVDD	9	6	8	PWR	Power	Positive supply for analog modules.
AGND		5	7	PWR	Power	Ground for analog modules.
VDDIO		17/36	21 / 34 / 48	PWR	Power	Positive supply for I/O logic
VDDCORE	29	43	55	PWR	Power	Internal regulated voltage output. Powers the core, memories, peripherals, and DFLL48M. Voltage is 1.2V.
GND	10/28	18/35/42	22 / 33 / 47 / 54	PWR	Power	Ground for CORE, peripherals and I/O
ADC_VREFA/DAC_VREFA	4	4	4	I	Analog	External Analog ADC and DAC Reference
ADC_VREFB	5	9	13	I	Analog	External Analog ADC Reference

Table 5-9. SW-2 Wire Programming/Debugging Pinout I/O Descriptions (Peripheral Function G)
PIN NAME	PIN NUMBER			PIN TYPE	FUNCTION TYPE	DESCRIPTION
PIN NAME	32-pin TFBGA	48-pin TFBGA	64-pin TFBGA	PIN TYPE	FUNCTION TYPE	DESCRIPTION
SWCLK	31	45	57	I	ST	Debug Serial Wire Input Clock
SWDIO	32	46	58	I/O	ST/CMOS	Debug Serial Wire Data In/Out

Table 5-10. Peripheral Touch Control (PTC) Pinout I/O Descriptions (Peripheral Function B)
PIN NAME	PIN NUMBER			PIN TYPE	FUNCTION TYPE	DESCRIPTION
PIN NAME	32-pin	48-pin	64-pin	PIN TYPE	FUNCTION TYPE	DESCRIPTION
Y0	3	3	3	I/O	CMOS / Analog	Y[m:0] Y-line (Analog Input/Output)
Y1	4	4	4	I/O	CMOS / Analog
Y2	5	9	13	I/O	CMOS / Analog
Y3	6	10	14	I/O	CMOS / Analog
Y4	7	11	15	I/O	CMOS / Analog
Y5	8	12	16	I/O	CMOS / Analog
Y6	-	-	61	I/O	CMOS / Analog
Y7	-	-	62	I/O	CMOS / Analog
Y8	-	47	63	I/O	CMOS / Analog
Y9	-	48	64	I/O	CMOS / Analog
Y10	-	-	5	I/O	CMOS / Analog
Y11	-	-	6	I/O	CMOS / Analog
Y12	-	-	9	I/O	CMOS / Analog
Y13	-	-	10	I/O	CMOS / Analog
Y14	-	7	11	I/O	CMOS / Analog
Y15	-	8	12	I/O	CMOS / Analog
X0	11	13	17	I/O	CMOS / Analog	X[n:0] X-line (DigitalOutput)
X1	12	14	18	I/O	CMOS / Analog
X2	13	15	19	I/O	CMOS / Analog
X3	14	16	20	I/O	CMOS / Analog
X4	17	25	35	I/O	CMOS / Analog
X5	18	26	36	I/O	CMOS / Analog
X6	19	27	37	I/O	CMOS / Analog
X7	20	28	38	I/O	CMOS / Analog
X8	-	29	41	I/O	CMOS / Analog
X9	-	30	42	I/O	CMOS / Analog
X10	21	31	43	I/O	CMOS / Analog
X11	22	32	44	I/O	CMOS / Analog
X12	-	-	25	I/O	CMOS / Analog
X13	-	-	26	I/O	CMOS / Analog
X14	-	-	27	I/O	CMOS / Analog
X15	-	-	28	I/O	CMOS / Analog

Table 5-11. Digital-to-Analog Converter (DAC) Peripheral Function B)
PIN NAME	PIN NUMBER			PIN TYPE	FUNCTION TYPE	DESCRIPTION
PIN NAME	32-pin TFBGA	48-pin TFBGA	64-pin TFBGA	PIN TYPE	FUNCTION TYPE	DESCRIPTION
VOUT	3	3	3	O	Analog output	DAC output
VREFA	4	4	4	I	Analog input	External reference