SAMC21 datasheet(16/46 Pages) ATMEL

16 / 46 page

Table 4-3. Extension Header EXT3

Pin on EXT3

SAM C21

Function

Shared functionality

1 [ID]

Communication line to the

ID chip on an extension

board.

2 [GND]

Ground.

3 [ADC(+)]

PB07

AIN9/INP2

Shield

4 [ADC(-)]

PB06

AIN8/INN2

Shield

5 [GPIO1]

PB04

GPIO

Shield

6 [GPIO2]

PB05

GPIO

Shield

7 [PWM(+)]

PA14

TC4/WO0

Crystal footprint

8 [PWM(-)]

PA15

TC4/WO1

User LED and Crystal

footprint

9 [IRQ/GPIO]

PA28

IRQ8/GPIO

User Button and EDBG

GPIO3

10 [SPI_SS_B/GPIO]

PA27

GPIO

Shield

11 [TWI_SDA]

PA12

SERCOM2 PAD[0] I2C SDA EXT1, EXT2, Shield, Crypto

Device, and EDBG I2C

12 [TWI_SCL]

PA13

SERCOM2 PAD[1] I2C SCL

EXT1, EXT2, Shield, Crypto

Device, and EDBG I2C

13 [USART_RX]

PA23

SERCOM3 PAD[1] UART

EXT1, EXT2, and Shield

14 [USART_TX]

PA22

SERCOM3 PAD[0] UART

EXT1, EXT2, and Shield

15 [SPI_SS_A]

PA02

GPIO

DAC Header

16 [SPI_MOSI]

PB00

SERCOM5 PAD[2] SPI

MOSI

EXT2, Shield, Shield(2), and

EDBG SPI

17 [SPI_MISO]

PB02

SERCOM5 PAD[0] SPI

MISO

EXT2, Shield, Shield(2), and

EDBG SPI

18 [SPI_SCK]

PB01

SERCOM5 PAD[3] SPI SCK EXT2, Shield, Shield(2), and

EDBG SPI

19 [GND]

Ground.

20 [VCC]

Power for extension board.

4.2.2.

Arduino Connectors

SAM C21 Xplained Pro implements Arduino shield connectors based on the Arduino Uno. All references

to Arduino pin names are taken from the official Arduino schematics of the Arduino Uno.

Atmel SAM C21 Xplained Pro [USER GUIDE]

Atmel-42460D-SAM-C21-Xplained-Pro_User Guide-08/2016

SAMC21 Arkusz danych(PDF) 16 Page - ATMEL Corporation

SAMC21 Arkusz danych(HTML) 16 Page - ATMEL Corporation

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