4.
Hardware Users Guide
4.1.
Connectors
This chapter describes the implementation of the relevant connectors and headers on SAM D11 Xplained
Pro and their connection to the ATSAMD11D14A. The tables of connections in this chapter also describes
which signals are shared between the headers and on-board functionality.
4.1.1.
Xplained Pro Standard Extension Header
The SAM D11 Xplained Pro header EXT1 offers access to the I/O of the microcontroller in order to
expand the board e.g. by connecting extensions to the board. This header is based on the standard
extension header specified in
Table 3-4 Xplained Pro Standard Extension Header
pitch of 2.54mm.
Table 4-1. Extension Header EXT1
Pin on EXT1
SAM D11 pin
Function
Shared functionality
1 [ID]
-
-
Communication line to ID chip
on extension board.
2 [GND]
-
-
GND
3 [ADC(+)]
PA02
AIN[0]
QTouch Button 1
4 [ADC(-)]
PA03
AIN[1]
QTouch Button 2
5 [GPIO1]
PA04
GPIO
6 [GPIO2]
PA05
GPIO
7 [PWM(+)]
PA16
TC1/WO[0]
LED0 and EDBG GPIO
8 [PWM(-)]
PA17
TC1/WO[1]
EDBG GPIO
9 [IRQ/GPIO]
PA14
NMI
SW0 and EDBG GPIO
10 [SPI_SS_B/GPIO]
PA15
GPIO
EDBG GPIO
11 [TWI_SDA]
PA22
SERCOM1 PAD[0] I²C SDA
EDBG I²C
12 [TWI_SCL]
PA23
SERCOM1 PAD[1] I²C SCL
EDBG I²C
13 [USART_RX]
PA11
SERCOM2 PAD[3] UART RX
EDBG CDC
14 [USART_TX]
PA10
SERCOM2 PAD[2] UART TX
EDBG CDC
15 [SPI_SS_A]
PA08
SERCOM0 PAD[2] SPI SS
32kHz Crystal footprint
16 [SPI_MOSI]
PA06
SERCOM0 PAD[0] SPI MOSI
EDBG SPI
17 [SPI_MISO]
PA09
SERCOM0 PAD[3] SPI MISO
32kHz Crystal footprint and
EDBG SPI
18 [SPI_SCK]
PA07
SERCOM0 PAD[1] SPI SCK
EDBG SPI
19 [GND]
-
-
GND
20 [VCC]
-
-
VCC
Atmel SAM D11 Xplained Pro [USER GUIDE]
Atmel-42349B-SAM-D11-Xplained-Pro_User Guide-04/2016
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