ATSAMD10 Xplained Mini User Guide [USER GUIDE]
42387A-MCU-01/2015
11
2.3.8
Extension Headers
The marked area on the grid I7 to R8 can be used for strapping in a Xplained PRO extension header and a few
other headers based on the SPI bus.
The general bus connections for a Xplained PRO Extension board is indicated in the Table 2-12, detailed wiring
can be found in the selected Extension board documentation.
Table 2-11. Xplained Pro Extension Header
Pin Name
Typical µC
signal
Typical
grid
pin
Extension signal description
1
ID
NC
Communication line to the ID chip on extension board.
2
GND
Ground.
3
ADC(+)
Analogue to digital converter, positive part of differential
ADC.
4
ADC(-)
Analogue to digital converter, negative part of differential
ADC.
5
GPIO1
General purpose I/O.
6
GPIO2
General purpose I/O.
7
PWM(+)
Pulse width modulation, alternatively positive part of
differential PWM. RESET to RF Extension board.
8
PWM(-)
Pulse width modulation, alternatively positive part of
differential PWM.
9
IRQ/GPIO
Interrupt request line from extension board.
10
SPI_SS_B/
GPIO
Slave select for SPI and/or general purpose I/O. Wake up
interrupt to RF extension (SLP_TR).
11
TWI_SDA
PC4/SDA
M6 to
Q12
Data line for two-wire interface.
12
TWI_SCL
PC5/SCL
M9 to
R12
Clock line for two-wire interface.
