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Pin Number
18
19
20
3.6.2
Xplained Pro Power Header
The power header can be used to connect external power to the SAM B11ZR Xplained Pro kit. The kit
automatically detects and switches to any external power if supplied. The power header can also be used
to supply power to external peripherals or extension boards. Ensure that the total current does not
exceed the recommended current limit of the on-board regulator when using the 3.3V pin.
Table 3-6. Xplained Pro Power Header
Pin Number
1
2
3
4
©
2017 Microchip Technology Inc.
Pin Name
SPI_SCK
SPI clock pin. Always connected, bus type.
GND
Ground pin for extension boards.
VCC
Power pin for extension boards.
Pin Name
VEXT_P5V0
GND
VCC_P5V0
VCC_P3V3
Description
Description
External 5V input pin
Ground pin
Unregulated 5V pin (an output, derived from one of
the input sources)
Regulated 3.3V pin (an output, used as main power
supply for the kit)
User Guide
ATSAMB11ZR
DS70005334A-page 11
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