Microchip Technology SAMC21N Xplained Pro, Manual

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Pin on EXT1 SAMC21N pin Function Shared functionality
8 [PWM(-)] PB13 TC4/WO[1] or X[13]/Y[29] -
9 [IRQ/GPIO] PA22 IRQ6 or TC4/WO[0] or TCC1/
WO[0] or X[10]/Y[26] EDBG GPIO1
10 [SPI_SS_B/GPIO] PA23 GPIO or TC4/WO[1] or TCC1/
WO[1] or X[11]/Y[27] -
11 [TWI_SDA] PB16 SERCOM5 PAD[0] I
2
C SDA -
12 [TWI_SCL] PB17 SERCOM5 PAD[1] I
2
C SCL -
13 [USART_RX] PA13 SERCOM2 PAD[1] UART RX -
14 [USART_TX] PA12 SERCOM2 PAD[0] UART TX -
15 [SPI_SS_A] PC28 SERCOM1 PAD[1] SPI SS -
16 [SPI_MOSI] PA18 SERCOM1 PAD[2] SPI MOSI
or X[6]/Y[22] -
17 [SPI_MISO] PC27 SERCOM1 PAD[0] SPI MISO -
18 [SPI_SCK] PA19 SERCOM1 PAD[3] SPI SCK
or X[7]/Y[23] -
19 [GND] - - Ground.
20 [VCC] - - Power for extension board.
Table 4-2. Extension Header EXT2
Pin on EXT2 SAMC21N pin Function Shared functionality
1 [ID] - - Communication line to the
ID chip on an extension
board.
2 [GND] - - Ground.
3 [ADC(+)] PA08 ADC1_AIN[10] or X[0]/Y[16] -
4 [ADC(-)] PA09 ADC1_AIN[11] or X[1]/Y[17] -
5 [GPIO1] PA20 SERCOM3 PAD[2] UART
RTS or X[8]/Y[24] -
6 [GPIO2] PA21 SERCOM3 PAD[3] UART
CTS or X[9]/Y[25] -
7 [PWM(+)] PB30 TC0/WO[0] Shield
8 [PWM(-)] PB31 TC0/WO[1] Shield
9 [IRQ/GPIO] PC24 IRQ0/GPIO EDBG GPIO2
10 [SPI_SS_B/GPIO] PC25 GPIO -
11 [TWI_SDA] PA16 SERCOM1 PAD[0] I
2
C SDA EXT3 , Shield , EDBG I
2
C
and Crypto Device
SAMC21N Xplained Pro
©
2017 Microchip Technology Inc.
User Guide
DS70005318A-page 14