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Table 4-8. LED Connections
SAM R30 Pin
PA19
PA18
4.3.4
QTouch Button
The SAM R30 Xplained Pro board contains a self capacitance button, which can be used as an I/O. This
QTouch button is intended to be driven by the built-in Peripheral Touch Controller (PTC) of the device. A
zero ohm resistor is added on the board to easily disconnect the on-board touch buttons from the
extension header since the I/O lines are shared between the QTouch button and extension header 1
(EXT1).
Table 4-9. QTouch Connection
SAM R30 Pin
PA06
4.3.5
RF
The main feature of the SAM R30 Xplained Pro is to show the RF capability of the ATSAMR30G18A SoC.
This device has bidirectional 100 ohm differential antenna pins, which are fed through a balun (Johanson
Technology, 0896BM15A0032) to create a single 50 ohm unbalanced output/input. This kit has a passive
analog RF switch (Skyworks Solutions Inc, AS222-92LF) connected to the unbalanced output of the
balun. The switch is driven by the RFCTRL1 and RFCTRL2 pins of the ATSAMR30G18A, which feature
Antenna Diversity to enable the device to automatically select the best signal from the two antennas (can
also be selected manually). The output of the switch is connected to a ceramic chip antenna (Johanson
Technology, 0900AT43A0070) and an SMA connector for external antennas.
Table 4-10. RF Connections
SAM R30Pin
RFP
RFN
PA09/RFCTRL1
PA12/RFCTRL2
4.4
Embedded Debugger Implementation
The SAM R30 Xplained Pro contains an Embedded Debugger (EDBG) that can be used to program and
debug the ATSAMR30G18A SoC using Serial Wire Debug (SWD). The Embedded Debugger includes a
Virtual COM Port interface over UART, Data Gateway Interface over SPI, I
also includes an XAM extension processor to the Embedded Debugger for on-board current
measurement. Atmel Studio can be used as a front-end for the Embedded Debugger.
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2017 Microchip Technology Inc.
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Function
LED0 (Color: Soft Orange)
LED1 (Color: Green)
note: To get started with QTouch, refer to the
Silkscreen Text
QT BTN1
RF
RF balanced output (positive)
RF balanced output (negative)
RF switch control signal (negative)
RF switch control signal (positive)
ATSAMR30-XPRO
Shared Functionality
EXT3
EXT3
®
QTouch
Library
and
Shared Functionality
EXT1
Shared Functionality
EDBG DGI GPIO
EDBG DGI GPIO
2
C and four GPIOs. The kit
User Guide
®
QTouch
Composer.
DS50002612A-page 19
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