Atmel SAM C21 Xplained Pro User Manual

Pin number Name Description
17 SPI_MISO Master in slave out line of serial peripheral interface. Always
implemented, bus type.
18 SPI_SCK Clock for serial peripheral interface. Always implemented, bus type.
19 GND Ground
20 VCC Power for extension board
3.4.2. Xplained Pro Power Header
The power header can be used to connect external power to the SAM C21 Xplained Pro kit. The kit will
automatically detect and switch to any external power if supplied. The power header can also be used as
supply for external peripherals or extension boards. Care must be taken not to exceed the total current
limitation of the on-board regulator when using the 3.3V or 5.0V pin.
Table 3-5 Xplained Pro Power Header
Pin number Pin name Description
1 VEXT_P5V0 External 5V input
2 GND Ground
3 VCC_P5V0 Unregulated 5V (output, derived from one of the input sources)
4 VCC_P3V3_P5
V0
Regulated 3.3V or 5.0V (output, used as main power supply for the
kit)
Atmel SAM C21 Xplained Pro [USER GUIDE]
Atmel-42460C-SAM C21 Xplained Pro_User Guide-10/2015
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Atmel SAM C21 Xplained Pro Specifications

General

Brand	Atmel
Model	SAM C21 Xplained Pro
Category	Motherboard
Language	English