SAMC21 datasheet(11/46 Pages) ATMEL

11 / 46 page

Pin number

Name

Description

SPI_MOSI

Master out slave in line of serial peripheral interface. Always

implemented, bus type.

SPI_MISO

Master in slave out line of serial peripheral interface. Always

implemented, bus type.

SPI_SCK

Clock for serial peripheral interface. Always implemented, bus type.

GND

Ground

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

VEXT_P5V0

External 5V input

GND

Ground

VCC_P5V0

Unregulated 5V (output, derived from one of the input sources)

VCC_P3V3_P5

Regulated 3.3V or 5.0V (output, used as main power supply for the

kit)

Atmel SAM C21 Xplained Pro [USER GUIDE]

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

SAMC21 Scheda tecnica(PDF) 11 Page - ATMEL Corporation