Atmel Xplained Pro Evaluation Kit ATSAMD20-XPRO ATSAMD20-XPRO Data Sheet

 

Atmel SAM D20 Xplained Pro [USER GUIDE]

42102C-MCU-02/2014

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Xplained Pro is an evaluation platform that provides the full Atmel microcontroller experience. The platform

consists of a series of Microcontroller (MCU) boards and extension boards that are integrated with Atmel

Studio, have Atmel Software Framework (ASF) drivers and demo code, support data streaming and more.

Xplained Pro MCU boards support a wide range of Xplained Pro extension boards that are connected through

a set of standardized headers and connectors. Each extension board has an identification (ID) chip to uniquely

identify which boards are mounted on a Xplained Pro MCU board. This information is used to present relevant

user guides, application notes, datasheets and example code through Atmel Studio. Available Xplained Pro

MCU and extension boards can be purchased in the 

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The SAM D20 Xplained Pro contains the Atmel Embedded Debugger (EDBG) for on-board debugging. The

EDBG is a composite USB device of three interfaces; a debugger, Virtual COM Port and Data Gateway

Interface (DGI).
In conjunction with Atmel Studio, the EDBG debugger interface can program and debug the ATSAMD20J18A.

On the SAM D20 Xplained Pro, the SWD interface is connected between the EDBG and the ATSAMD20J18A.
The Virtual COM Port is connected to a UART port on the ATSAMD20J18A (see section 

 for pinout), and provides an easy way to communicate with the target

application through simple terminal software. It offers variable baud rate, parity and stop bit settings. Note that

the settings on the target device UART must match the settings given in the terminal software.
The DGI consists of several physical data interfaces for communication with the host computer. See section

 for available interfaces and pinout. Communication

over the interfaces are bidirectional. It can be used to send events and values from the ATSAMD20J18A, or

as a generic printf-style data channel. Traffic over the interfaces can be timestamped on the EDBG for more

accurate tracing of events. Note that timestamping imposes an overhead that reduces maximal throughput. The

DGI uses a proprietary protocol, and is thus only compatible with Atmel Studio.
The EDBG controls two LEDs on SAM D20 Xplained Pro, a power LED and a status LED. 

 shows how the LEDs are controlled in different operation modes.

Normal operation

Power LED is lit when power is

applied to the board.

Activity indicator, LED flashes

every time something happens on

the EDBG.

Bootloader mode (idle)

The power LED and the status LED blinks simultaneously.

Bootloader mode (firmware

upgrade)

The power LED and the status LED blinks in an alternating pattern.

For further documentation on the EDBG, see the 

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All Xplained Pro compatible extension boards have an Atmel ATSHA204 CryptoAuthentication™ chip mounted.

This chip contains information that identifies the extension with its name and some extra data. When an

Xplained Pro extension board is connected to an Xplained Pro MCU board the information is read and sent

to Atmel Studio. The Atmel Kits extension, installed with Atmel Studio, will give relevant information, code

examples and links to relevant documents. 

 shows the

data fields stored in the ID chip with example content.

Manufacturer

ASCII string

Atmel’\0’

Product Name

ASCII string

Segment LCD1 Xplained Pro’\0’

Product Revision

ASCII string

02’\0’

Product Serial Number

ASCII string

1774020200000010’\0’

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