Microchip Technology SAM R30 Xplained Pro User Manual page 13

Pin Number
13
14
15
16
17
18
19
20
3.5.2 Xplained Pro Power Header
The power header can be used to connect external power to the SAM R30 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
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Pin Name Description
UART_RX Receiver pin of target device UART
UART_TX Transmitter pin of target device UART
SPI_SS_A Slave select for SPI. This pin should preferably not be connected to
anything else.
SPI_MOSI SPI master out slave in pin. Always connected, bus type
SPI_MISO SPI master in slave out pin. Always connected, bus type
SPI_SCK SPI clock pin. Always connected, bus type
GND Ground pin for extension boards
VCC Power pin for extension boards
Pin Name
1 VEXT_P5V0
2 GND
3 VCC_P5V0
4 VCC_P3V3
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
ATSAMR30-XPRO
DS50002612A-page 13