The Atmel® SAM D11 Xplained Pro evaluation kit is a hardware platform to
evaluate the ATSAMD11D14A microcontroller.
Supported by the Atmel Studio integrated development platform, the kit provides
easy access to the features of the Atmel ATSAMD11D14A and explains how to
integrate the device in a custom design.
The Xplained Pro MCU series evaluation kits include an on-board Embedded
Debugger, and no external tools are necessary to program or debug the
ATSAMD11D14A.
The Xplained Pro extension kits offers additional peripherals to extend the
features of the board and ease the development of custom designs.
6. Document Revision History ................................................... 14
7. Evaluation Board/Kit Important Notice .................................. 15
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1.Introduction
1.1Features
●Atmel ATSAMD11D14A microcontroller
●Embedded debugger (EDBG)
●USB interface
●Programming and debugging on board SAM D11 through Serial Wire Debug (SWD)
●Virtual COM-port interface to target via UART
●Atmel Data Gateway Interface (DGI) to target via SPI and TWI
●Four GPIOs connected to target for code instrumentation
●Digital I/O
●Two mechanical buttons (user and reset button)
●One user LED
●One extension header
●Three possible power sources
●External power
●Embedded debugger USB
●Target USB
●32kHz crystal footprint
●USB interface, device mode only
●
Two QTouch® buttons
1.2Kit Overview
The Atmel SAM D11 Xplained Pro evaluation kit is a hardware platform to evaluate the Atmel
ATSAMD11D14A.
The kit offers a set of features that enables the ATSAMD11D14A user to get started using the
ATSAMD11D14A peripherals right away and to get an understanding of how to integrate the device in their
own design.
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Figure 1-1. SAM D11 Xplained Pro Evaluation Kit Overview
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2.Getting Started
2.1Quick-start
Three steps to start exploring the Atmel Xplained Pro Platform
●Download and install Atmel Studio
●Launch Atmel Studio
●Connect a Micro-B cable to the DEBUG USB port
2.2Connecting the Kit
When connecting Atmel SAM D11 Xplained Pro to your computer for the first time, the operating system will do
a driver software installation. The driver file supports both 32-bit and 64-bit versions of Microsoft® Windows
XP and Windows 7.
Once connected the green power LED will be lit and Atmel Studio will autodetect which Xplained Pro
evaluation- and extension kit(s) that's connected. You'll be presented with relevant information like datasheets
and kit documentation. You also have the option to launch Atmel Software Framework (ASF) example
applications. The target device is programmed and debugged by the on-board Embedded Debugger and
no external programmer or debugger tool is needed. Refer to the Atmel Studio user guide2 for information
regarding how to compile and program the kit.
1
®
2.3Design Documentation and Related Links
The following list contains links to the most relevant documents and software for SAM D11 Xplained Pro.
1. Xplained Pro products 3 - Atmel Xplained Pro is a series of small-sized and easy-to-use evaluation kits
for Atmel AVR® 8- and 32-bit microcontrollers. It consists of a series of low cost MCU boards for evaluation
and demonstration of features and capabilities of different MCU families.
2. SAM D11 Xplained Pro User Guide 4 - PDF version of this User Guide.
3. SAM D11 Xplained Pro Design Documentation 5 - Package containing schematics, BOM, assembly
drawings, 3D plots, layer plots etc.
4. EDBG User Guide 6 - User guide containing more information about the onboard Embedded Debugger.
5. Atmel Studio 7 - Free Atmel IDE for development of C/C++ and assembler code for Atmel
microcontrollers.
6. Atmel Data Visualizer 8 - Atmel Data Visualizer is a program used for processing and visualizing data.
7.
IAR Embedded Workbench® 9 for ARM®. This is a commercial C/C++ compiler that is available for
ARM. There is a 30 day evaluation version as well as a code size limited kick-start version available from
their website. The code size limit is 16KB for devices with M0, M0+, and M1 cores and 32kB for devices
with other cores.
8. Atmel sample store 10 - Atmel sample store where you can order samples of devices.
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 Atmel Web Store1.
3.1Embedded Debugger
The SAM D11 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 ATSAMD11D14A.
On the SAM D11 Xplained Pro, the SWD interface is connected between the EDBG and the ATSAMD11D14A.
The Virtual COM Port is connected to a UART port on the ATSAMD11D14A (see section “Embedded
Debugger Implementation” on page 11 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
“Embedded Debugger Implementation” on page 11 for available interfaces and pinout. Communication
over the interfaces are bidirectional. It can be used to send events and values from the ATSAMD11D14A, 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 D11 Xplained Pro; a power LED and a status LED. Table 3-1, “EDBG
LED Control” on page 6 shows how the LEDs are controlled in different operation modes.
Table 3-1. EDBG LED Control
Operation ModePower LEDStatus LED
Normal operationPower LED is lit when power is
applied to the board.
Bootloader mode (idle)The power LED and the status LED blinks simultaneously.
Bootloader mode (firmware
The power LED and the status LED blinks in an alternating pattern.
upgrade)
For further documentation on the EDBG, see the EDBG User Guide2.
3.2Hardware Identification System
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. Table 3-2, “Xplained Pro ID Chip Content” on page 6 shows the
data fields stored in the ID chip with example content.
The SAM D11 Xplained Pro kit can be powered either by USB or by an external power source through the 4pin power header, marked PWR. This connector is described in “Xplained Pro Power Header” on page 8.
The available power sources and specifications are listed in Table 3-3, “Power Sources for SAM D11 Xplained
Pro” on page 7.
Table 3-3. Power Sources for SAM D11 Xplained Pro
Power inputVoltage RequirementsCurrent RequirementsConnector Marking
External power5V ± 2 % (± 100mV) for
USB host operation.
4.3V to 5.5V if USB host
operation is not required
Embedded debugger
USB
4.4V to 5.25V
(according to USB spec)
Target USB4.4V to 5.25V
(according to USB spec)
Recommended
minimum is 1A to
be able to provide
enough current for
connected USB
devices and the board
itself. Recommended
maximum is 2A due
to the input protection
maximum current
specification.
500mA (according to
USB spec)
500mA (according to
USB spec)
PWR
DEBUG USB
TARGET 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.
3. Target USB.
Note
External power is required when the 500mA through the USB connector is not enough to power a
connected USB device in a USB host application.
3.3.1Measuring SAM D11 Power Consumption
As part of an evaluation of the SAM D11 it can be of interest to measure its power consumption. Because the
device has a separate power plane (VCC_MCU_P3V3) on this board it is possible to measure the current
consumption by measuring the current that is flowing into this plane. The VCC_MCU_P3V3 plane is connected
via a jumper to the main power plane (VCC_TARGET_P3V3) and by replacing the jumper with an ammeter it is
possible to determine the current consumption. To locate the current measurement header, refer to Figure 1-1,
“SAM D11 Xplained Pro Evaluation Kit Overview” on page 4.
Warning
Do not power the board without having the jumper or an ammeter mounted. This can cause the
SAM D11 to be powered through its I/O pins and cause undefined operation of the device.
3.4Standard Headers and Connectors
3.4.1Xplained Pro Standard Extension Header
All Xplained Pro kits have one or more dual row, 20-pin, 100mil extension headers. Xplained Pro MCU boards
have male headers while Xplained Pro extensions have their female counterparts. Note that all pins are not
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always connected. However, all the connected pins follow the defined pin-out described in Table 3-4, “Xplained
Pro Extension Header” on page 8. The extension headers can be used to connect a wide variety of
Xplained Pro extensions to Xplained Pro MCU boards and to access the pins of the target MCU on Xplained
Pro MCU board directly.
Table 3-4. Xplained Pro Extension Header
Pin numberNameDescription
1IDCommunication line to the ID chip on extension board.
2GNDGround.
3ADC(+)Analog to digital converter, alternatively positive part of
differential ADC.
4ADC(-)Analog to digital converter, alternatively negative part of
differential ADC.
5GPIO1General purpose I/O.
6GPIO2General purpose I/O.
7PWM(+)Pulse width modulation, alternatively positive part of
differential PWM.
8PWM(-)Pulse width modulation, alternatively positive part of
differential PWM.
9IRQ/GPIOInterrupt request line and/or general purpose I/O.
10SPI_SS_B/GPIOSlave select for SPI and/or general purpose I/O.
11TWI_SDAData line for two-wire interface. Always implemented, bus
type.
12TWI_SCLClock line for two-wire interface. Always implemented, bus
type.
13USART_RXReceiver line of Universal Synchronous and Asynchronous
serial Receiver and Transmitter.
14USART_TXTransmitter line of Universal Synchronous and
Asynchronous serial Receiver and Transmitter.
15SPI_SS_ASlave select for SPI. Should be unique if possible.
16SPI_MOSIMaster out slave in line of Serial peripheral interface. Always
implemented, bus type.
17SPI_MISOMaster in slave out line of Serial peripheral interface. Always
implemented, bus type.
18SPI_SCKClock for Serial peripheral interface. Always implemented,
bus type.
19GNDGround.
20VCCPower for extension board.
3.4.2Xplained Pro Power Header
The power header can be used to connect external power to the SAM D11 Xplained Pro kit. The kit will
automatically detect and switch to the external power if supplied. The power header can also be used as supply
for external peripherals or extension boards. Care must be taken not to exceed the total current limitation of the
on-board regulator for the 3.3V regulated output. To locate the power header, refer to Figure 1-1, “SAM D11
Xplained Pro Evaluation Kit Overview” on page 4
Table 3-5. Power Header PWR
Pin Number PWR headerPin NameDescription
1VEXT_P5V0External 5V input
2GNDGround
3VCC_P5V0Unregulated 5V (output, derived
from one of the input sources)
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Pin Number PWR headerPin NameDescription
4VCC_P3V3Regulated 3.3V (output, used as
main power for the kit)
Note
If the board is powered from a battery source it is recommended to use the PWR header. If there
is a power source connected to EDBG USB, the EDBG is activated and it will consume more
power.
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4.Hardware User Guide
4.1Connectors
This chapter describes the implementation of the relevant connectors and headers on SAM D11 Xplained Pro
and their connection to the ATSAMD11D14A. The tables of connections in this chapter also describes which
signals are shared between the headers and on-board functionality.
4.1.1I/O Extension Headers
The SAM D11 Xplained Pro header EXT1 offers access to the I/O of the microcontroller in order to expand
the board e.g. by connecting extensions to the board. This header is based on the standard extension header
specified in Xplained Pro Standard Extension Header on page 7. The header has a pitch of 2.54mm.
Table 4-1. Extension Header EXT1
Pin on EXT1SAM D11 pinFunctionShared functionality
17 [SPI_MISO]PA09SERCOM0 PAD[3] SPI MISO32kHz Crystal footprint and
EDBG SPI
18 [SPI_SCK]PA07SERCOM0 PAD[1] SPI SCKEDBG SPI
19 [GND]--GND
20 [VCC]--VCC
4.2Peripherals
4.2.1Crystal
The SAM D11 Xplained Pro kit contain one crystal footprint that can be used for mounting a clock source
for the SAM D11 device. The IO pins for the crystal are shared with the extension header, so two zero ohm
resistors (R311 and R312) must be removed before mounting a crystal on the footprint.
Table 4-2. External 32.768kHz Crystal
Pin on SAM D11Function
PA08XIN32
PA09XOUT32
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4.2.2Mechanical Buttons
SAM D11 Xplained Pro contains two mechanical buttons. One button is the RESET button connected to the
SAM D11 reset line and the other is a generic user configurable button. When a button is pressed it will drive
the I/O line to GND.
Table 4-3. Mechanical Buttons
Pin on SAM D11Silkscreen text
PA28/RSTRESET
PA14SW0
4.2.3LED
There is one yellow LED available on the SAM D11 Xplained Pro board that can be turned on and off. The LED
can be activated by driving the connected I/O line to GND.
Table 4-4. LED Connections
Pin on SAM D11LED
PA16Yellow LED0
4.2.4Touch Buttons
There are two self capacitance buttons available on the SAM D11 Xplained Pro board that can be used as I/
O. These QTouch buttons are intended to be driven by the built-in Peripheral Touch Controller (PTC) of the
device.
Zero ohm resistors are added on the board to easily disconnect either the onboard touch buttons or the
connection to the extension header, as the I/O lines are shared between the two. These resistors can be found
on the back side of the board, marked "QTBTN1" and "QTBTN2" for disconnecting the touch buttons, and
"EXT-3" and "EXT-4" for disconnecting the lines to the extension header.
Table 4-5. QTouch Button Connections
Pin on SAM D11Silkscreen text
PA02QT BTN1
PA03QT BTN2
4.2.5USB
The SAM D11 Xplained Pro has a Micro-USB connector for use with the SAM D11 USB module. To be able
to detect when a target USB cable is connected in self-powered mode, a GPIO is used to detect the VBUS
voltage on the connector.
Table 4-6. USB Connections
Pin on SAM D11USB
PA27VBUS Detection
PA24USB D-
PA25USB D+
Notes:
1
PA27 is shared between SPI SS to the EDBG and VBUS detect on target USB. This is implemented so the pin can detect if
VBUS is present when configured as input with no internal pull. If VBUS is present, the level on the pin will be high. If VBUS
is not present, the line is externally pulled low. It will not be possible to detect this if the EDBG SPI DGI interface is enabled
from Atmel Data Visualizer.
4.3Embedded Debugger Implementation
SAM D11 Xplained Pro contains an Embedded Debugger (EDBG) that can be used to program and debug the
ATSAMD11D14A using Serial Wire Debug (SWD). The Embedded Debugger also include a Virtual Com port
interface over UART, an Atmel Data Gateway Interface over SPI, and TWI and it includes four of the SAM D11
GPIOs. Atmel Studio can be used as a front end for the Embedded Debugger.
1
4.3.1Serial Wire Debug
The Serial Wire Debug (SWD) use two pins to communicate with the target. For further information on how to
use the programming and debugging capabilities of the EDBG, see “Embedded Debugger” on page 6.
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Table 4-7. SWD Connections
Pin on SAM D11Function
PA30SWD clock
PA31SWD data
4.3.2Virtual COM Port
The Embedded Debugger acts as a Virtual Com Port gateway by using one of the ATSAMD11D14A UARTs.
For further information on how to use the Virtual COM port see “Embedded Debugger” on page 6.
Table 4-8. Virtual COM Port Connections
Pin on SAM D11Function
PA10SERCOM2 PAD[2] UART TXD (SAM D11 TX line)
PA11SERCOM2 PAD[3] UART RXD (SAM D11 RX line)
4.3.3Atmel Data Gateway Interface
The Embedded Debugger features an Atmel Data Gateway Interface (DGI) by using either a SPI or I²C port.
The DGI can be used to send a variety of data from the SAM D11 to the host PC. For further information on
how to use the DGI interface see “Embedded Debugger” on page 6.
Table 4-9. DGI Interface Connections when using SPI
Pin on SAM D11Function
PA27GPIO/SPI SS (Slave select) (SAM D11 is Master)
1
PA09SERCOM0 PAD[3] SPI MISO (Master In, Slave Out)
PA27 is shared between SPI SS to the EDBG and VBUS detect on target USB. This is implemented so the pin can detect if
VBUS is present when configured as input with no internal pull. If VBUS is present, the level on the pin will be high. If VBUS
is not present, the line is externally pulled low. It will not be possible to detect this if the EDBG SPI DGI interface is enabled
from Atmel Data Visualizer.
Table 4-10. DGI Interface Connections when using I²C
Pin on SAM D11Function
PA08SERCOM2 PAD[0] SDA (Data line)
PA09SERCOM2 PAD[1] SCL (Clock line)
Four GPIO lines are connected to the Embedded Debugger. The EDBG can monitor these lines and time
stamp pin value changes. This makes it possible to accurately time stamp events in the SAM D11 application
code. For further information on how to configure and use the GPIO monitoring features see “Embedded
Debugger” on page 6.
Table 4-11. GPIO Lines Connected to the EDBG
Pin on SAM D11Function
PA16GPIO0
PA17GPIO1
PA14GPIO2
PA15GPIO3
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5.Hardware Revision History and Known Issues
5.1Identifying Product ID and Revision
The revision and product identifier of Xplained Pro boards can be found in two ways; through Atmel Studio or
by looking at the sticker on the bottom side of the PCB.
By connecting a Xplained Pro MCU board to a computer with Atmel Studio running, an information window will
pop up. The first six digits of the serial number, which is listed under kit details, contain the product identifier
and revision. Information about connected Xplained Pro extension boards will also appear in the Atmel Kits
window.
The same information can be found on the sticker on the bottom side of the PCB. Most kits will print the
identifier and revision in plain text as A09-nnnn\rr where nnnn is the identifier and rr is the revision. Boards with
limited space have a sticker with only a QR-code which contains a serial number string.
The serial number string has the following format:
"nnnnrrssssssssss"
n = product identifier
r = revision
s = serial number
The kit identifier for SAM D11 Xplained Pro is 2178.
5.2Revision 3
Revision 3 of SAM D11 Xplained Pro is the initial released version, there are no known issues.
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6.Document Revision History
Document
DateComment
revision
42349A01/2015Initial document release
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7.Evaluation Board/Kit Important Notice
This evaluation board/kit is intended for use for FURTHER ENGINEERING, DEVELOPMENT,
DEMONSTRATION, OR EVALUATION PURPOSES ONLY. It is not a finished product and may not (yet)
comply with some or any technical or legal requirements that are applicable to finished products, including,
without limitation, directives regarding electromagnetic compatibility, recycling (WEEE), FCC, CE or UL
(except as may be otherwise noted on the board/kit). Atmel supplied this board/kit "AS IS," without any
warranties, with all faults, at the buyer's and further users' sole risk. The user assumes all responsibility
and liability for proper and safe handling of the goods. Further, the user indemnifies Atmel from all claims
arising from the handling or use of the goods. Due to the open construction of the product, it is the user's
responsibility to take any and all appropriate precautions with regard to electrostatic discharge and any other
technical or legal concerns.
EXCEPT TO THE EXTENT OF THE INDEMNITY SET FORTH ABOVE, NEITHER USER NOR
ATMEL SHALL BE LIABLE TO EACH OTHER FOR ANY INDIRECT, SPECIAL, INCIDENTAL, OR
CONSEQUENTIAL DAMAGES.
No license is granted under any patent right or other intellectual property right of Atmel covering or relating
to any machine, process, or combination in which such Atmel products or services might be or are used.
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Atmel Corporation1600 Technology Drive, San Jose, CA 95110 USAT: (+1)(408) 441.0311F: (+1)(408) 436.4200|www.atmel.com
Atmel®, Atmel logo and combinations thereof, Enabling Unlimited Possibilities®, AVR®, QTouch®, and others are registered trademarks or trademarks of Atmel
Corporation in U.S. and other countries. Windows® is a registered trademark of Microsoft Corporation in U.S. and or other countries. ARM®, Cortex® and others is a
registered trademark of ARM Ltd. Other terms and product names may be trademarks of others.
DISCLAIMER: The information in this document is provided in connection with Atmel products. No license, express or implied, by estoppel or otherwise, to any intellectual property right is granted
by this document or in connection with the sale of Atmel products. EXCEPT AS SET FORTH IN THE ATMEL TERMS AND CONDITIONS OF SALES LOCATED ON THE ATMEL WEBSITE,
ATMEL ASSUMES NO LIABILITY WHATSOEVER AND DISCLAIMS ANY EXPRESS, IMPLIED OR STATUTORY WARRANTY RELATING TO ITS PRODUCTS INCLUDING, BUT NOT LIMITED
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descriptions at any time without notice. Atmel does not make any commitment to update the information contained herein. Unless specifically provided otherwise, Atmel products are not suitable
for, and shall not be used in, automotive applications. Atmel products are not intended, authorized, or warranted for use as components in applications intended to support or sustain life.
SAFETY-CRITICAL, MILITARY, AND AUTOMOTIVE APPLICATIONS DISCLAIMER: Atmel products are not designed for and will not be used in connection with any applications where the failure
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