Xplained Pro Headers And Connectors - Microchip Technology SAMC21N Xplained Pro Manual

Power Input
Embedded debugger
USB
The kit will automatically detect which power sources are available and choose which one to use
according to the following priority:
1. External power.
2. Embedded Debugger USB.
Info: External power is required when 500mA from a USB connector is not enough to power
the board with possible extension boards.
3.4

Xplained Pro Headers and Connectors

3.4.1 Xplained Pro Standard Extension Header
All Xplained Pro kits have one or more dual row, 20-pin, 100mil extension header. Xplained Pro MCU
boards have male headers, while Xplained Pro extensions have their female counterparts. Note that all
pins are not always connected. All connected pins follow the defined pin-out description in the table
below.
The extension headers can be used to connect a variety of Xplained Pro extensions to Xplained Pro MCU
boards or to access the pins of the target MCU on Xplained Pro MCU boards directly.
Table 3-4. Xplained Pro Standard Extension Header
Pin Number
1
2
3
4
5
6
7
8
©
2017 Microchip Technology Inc.
Voltage Requirements
4.4V to 5.25V (according
to USB spec.)
Name Description
ID Communication line to the ID chip on an extension board
GND Ground
ADC(+) Analog to digital converter, alternatively positive part of differential
ADC
ADC(-) Analog to digital converter, alternatively negative part of differential
ADC
GPIO1 General purpose I/O
GPIO2 General purpose I/O
PWM(+) Pulse width modulation, alternatively positive part of differential
PWM
PWM(-) Pulse width modulation, alternatively negative part of differential
PWM
SAMC21N Xplained Pro
Current Requirements
maximum is 2A due to
the input protection
maximum current
specification.
500mA (according to
USB spec.)
User Guide
Connector Marking
DEBUG USB
DS70005318A-page 10