Atmel-42102-SAMD20-Xplained-Pro User
SMART ARM-based Microcontrollers
SAM D20 Xplained Pro
USER GUIDE
Preface
®
The Atmel SAM D20 Xplained Pro evaluation kit is a hardware platform to
evaluate the ATSAMD20J18A microcontroller.
Supported by the Atmel Studio integrated development platform, the kit
provides easy access to the features of the Atmel ATSAMD20J18A 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 ATSAMD20J18A.
The Xplained Pro extension kits offers additional peripherals to extend the
features of the board and ease the development of custom designs.
Atmel-42102D-SAM-D20-Xplained-Pro_User Guide-04/2016
Table of Contents
Preface............................................................................................................................ 1
1. Introduction................................................................................................................ 3
1.1.
1.2.
Features....................................................................................................................................... 3
Kit Overview................................................................................................................................. 3
2. Getting Started...........................................................................................................5
2.1.
2.2.
Xplained Pro Quick Start.............................................................................................................. 5
Design Documentation and Relevant Links................................................................................. 5
3. Xplained Pro.............................................................................................................. 7
3.1.
3.2.
3.3.
3.4.
Embedded Debugger................................................................................................................... 7
Hardware Identification System....................................................................................................8
Power Sources............................................................................................................................. 8
Xplained Pro Headers and Connectors........................................................................................9
3.4.1.
Xplained Pro Standard Extension Header..................................................................... 9
3.4.2.
Xplained Pro Power Header........................................................................................ 10
4. Hardware Users Guide............................................................................................ 11
4.1.
4.2.
4.3.
Connectors................................................................................................................................. 11
4.1.1.
Xplained Pro Standard Extension Headers..................................................................11
4.1.2.
Current Measurement Header..................................................................................... 13
Peripherals................................................................................................................................. 13
4.2.1.
Crystal..........................................................................................................................13
4.2.2.
Mechanical Buttons..................................................................................................... 14
4.2.3.
LED..............................................................................................................................14
Embedded Debugger Implementation........................................................................................14
4.3.1.
Serial Wire Debug........................................................................................................14
4.3.2.
Virtual COM Port..........................................................................................................14
4.3.3.
Atmel Data Gateway Interface.....................................................................................15
4.3.4.
External Programming and Debugging........................................................................15
5. Appendix..................................................................................................................17
5.1.
Getting Started with IAR.............................................................................................................17
6. Hardware Revision and Known Issues.................................................................... 20
6.1.
6.2.
6.3.
Identifying Product ID and Revision........................................................................................... 20
Revision 5...................................................................................................................................20
Revision 4...................................................................................................................................20
7. Document Revision History..................................................................................... 22
8. Evaluation Board/Kit Important Notice.....................................................................23
Atmel SAM D20 Xplained Pro [USER GUIDE]
Atmel-42102D-SAM-D20-Xplained-Pro_User Guide-04/2016
2
1.
Introduction
1.1.
Features
1.2.
•
•
Atmel ATSAMD20J18A microcontroller
Embedded debugger (EDBG)
•
– USB interface
– Programming and debugging on board SAM D20 through Serial Wire Debug (SWD)
– Programming and debugging external targets 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
– Three extension headers
Two possible power sources
•
– External power
– Embedded debugger USB
32kHz crystal
Kit Overview
The Atmel SAM D20 Xplained Pro evaluation kit is a hardware platform to evaluate the Atmel
ATSAMD20J18A.
The kit offers a set of features that enables the ATSAMD20J18A user to get started using the
ATSAMD20J18A peripherals right away and to get an understanding of how to integrate the device in
their own design.
Atmel SAM D20 Xplained Pro [USER GUIDE]
Atmel-42102D-SAM-D20-Xplained-Pro_User Guide-04/2016
3
Figure 1-1. SAM D20 Xplained Pro Evaluation Kit Overview
Atmel SAM D20 Xplained Pro [USER GUIDE]
Atmel-42102D-SAM-D20-Xplained-Pro_User Guide-04/2016
4
2.
Getting Started
2.1.
Xplained Pro Quick Start
Steps to start exploring the Atmel Xplained Pro platform:
1. Download Atmel Studio.
2. Launch Atmel Studio.
3. Connect a USB cable (Standard-A to Micro-B or Micro-AB) between the PC and the DEBUG USB
port on the kit.
When the Xplained Pro MCU kit is connected to your computer for the first time, the operating system will
®
perform a driver software installation. The driver file supports both 32- and 64-bit versions of Microsoft
®
®
Windows XP, Windows Vista , Windows 7, Windows 8, Windows 10, and Windows Server 2012.
Once the Xplained Pro MCU board is powered the green power LED will be lit and Atmel Studio will auto
detect which Xplained Pro MCU- and extension board(s) are connected. Atmel Studio will present
relevant information like datasheets and kit documentation. The kit landing page in Atmel Studio also has
the option to launch Atmel Software Framework (ASF) example applications for the kit. The SAM D20
device is programmed and debugged by the on-board Embedded Debugger and therefore no external
programmer or debugger tool is needed.
2.2.
Design Documentation and Relevant Links
The following list contains links to the most relevant documents and software for the SAM D20 Xplained
Pro.
•
•
•
•
•
•
•
•
Xplained products - Atmel Xplained evaluation kits are a series of easy-to-use evaluation kits for
Atmel microcontrollers and other Atmel products. For low pin-count devices the Xplained Nano
series provides a minimalistic solution with access to all I/O pins of the target microcontroller.
Xplained Mini kits are for medium pin-count devices and adds Arduino Uno compatible header
footprint and a prototyping area. Xplained Pro kits are for medium to high pin-count devices, they
features advanced debugging and standardized extensions for peripheral functions. All these kits
have on board programmers/debuggers which creates a set of low-cost boards for evaluation and
demonstration of features and capabilities of different Atmel products.
Atmel Studio - Free Atmel IDE for development of C/C++ and assembler code for Atmel
microcontrollers.
Atmel sample store - Atmel sample store where you can order samples of devices.
EDBG User Guide - User guide containing more information about the on-board Embedded
Debugger.
®
®
IAR Embedded Workbench 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.
®
®
®
Atmel QTouch Library PTC - QTouch Library for Atmel AVR and ARM -based microcontrollers.
®
Atmel QTouch Composer - Tool for developing capacitive buttons, sliders, and wheels
applications.
Atmel Data Visualizer - Atmel Data Visualizer is a program used for processing and visualizing
data. Data Visualizer can receive data from various sources such as the Embedded Debugger Data
Gateway Interface found on Xplained Pro boards and COM ports.
Atmel SAM D20 Xplained Pro [USER GUIDE]
Atmel-42102D-SAM-D20-Xplained-Pro_User Guide-04/2016
5
•
•
•
Design Documentation - Package containing CAD source, schematics, BOM, assembly drawings,
3D plots, layer plots etc.
Hardware Users Guide in PDF format - PDF version of this User Guide.
SAM D20 Xplained Pro on Atmel web page - Atmel website link.
Atmel SAM D20 Xplained Pro [USER GUIDE]
Atmel-42102D-SAM-D20-Xplained-Pro_User Guide-04/2016
6
3.
Xplained Pro
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, which 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,
which are connected through a set of standardized headers and connectors. Each extension board has
an identification (ID) chip to uniquely identify which boards are connected to an Xplained Pro MCU board.
This information is used to present relevant user guides, application notes, datasheets, and example
code through Atmel Studio.
3.1.
Embedded Debugger
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 a Data
Gateway Interface (DGI).
Together with Atmel Studio, the EDBG debugger interface can program and debug the ATSAMD20J18A.
On SAM D20 Xplained Pro, the SWD interface is connected between the EDBG and the
ATSAMD20J18A.
The Virtual COM Port is connected to a UART on the ATSAMD20J18A and provides an easy way to
communicate with the target application through terminal software. It offers variable baud rate, parity, and
stop bit settings. Note that the settings on the ATSAMD20J18A must match the settings given in the
terminal software.
Info: The virtual COM port in the EDBG requires the terminal software to set the data terminal
ready (DTR) signal to enable the UART pins connected to the ATSAMD20J18A. If the DTR
signal is not enabled the UART pins on the EDBG is kept in high-z (tristate) rendering the COM
port unusable. The DTR signal is set automatically by some terminal software, but it may have
to be manually enabled in your terminal.
The DGI consists of several physical interfaces for communication with the host computer.
Communication over the interfaces is 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. Atmel Data Visualizer is used to send and receive data through DGI.
The EDBG controls two LEDs on SAM D20 Xplained Pro; a power LED and a status LED. The table
below shows how the LEDs are controlled in different operation modes.
Table 3-1. EDBG LED Control
Operation mode
Power LED
Status LED
Normal operation
Power LED is lit when power is
applied to the board.
Activity indicator, LED flashes
when any communication
happens to 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.
Atmel SAM D20 Xplained Pro [USER GUIDE]
Atmel-42102D-SAM-D20-Xplained-Pro_User Guide-04/2016
7
For further documentation on the EDBG, see the EDBG User Guide.
3.2.
Hardware 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 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. The table below shows the data fields stored in the ID
chip with example content.
Table 3-2. Xplained Pro ID Chip Content
3.3.
Data field
Data type
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’
Minimum Voltage [mV]
uint16_t
3000
Maximum Voltage [mV]
uint16_t
3600
Maximum Current [mA]
uint16_t
30
Power Sources
The SAM D20 Xplained Pro kit can be powered by several power sources as listed in the table below.
Table 3-3. Power Sources for SAM D20 Xplained Pro
Power input
Voltage requirements
Current requirements
Connector marking
External power
5V ±2% (±100mV) for
USB host operation.
4.3V to 5.5V if USB host
operation is not
required.
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.
PWR
Embedded debugger
USB
4.4V to 5.25V (according 500mA (according to
to USB spec.)
USB spec.)
DEBUG 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.
Atmel SAM D20 Xplained Pro [USER GUIDE]
Atmel-42102D-SAM-D20-Xplained-Pro_User Guide-04/2016
8
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
Name
Description
1
ID
Communication line to the ID chip on an extension board
2
GND
Ground
3
ADC(+)
Analog to digital converter, alternatively positive part of differential
ADC
4
ADC(-)
Analog to digital converter, alternatively negative part of differential
ADC
5
GPIO1
General purpose I/O
6
GPIO2
General purpose I/O
7
PWM(+)
Pulse width modulation, alternatively positive part of differential
PWM
8
PWM(-)
Pulse width modulation, alternatively negative part of differential
PWM
9
IRQ/GPIO
Interrupt request line and/or general purpose I/O
10
SPI_SS_B/
GPIO
Slave select for SPI and/or general purpose I/O
11
I2C_SDA
Data line for I2C interface. Always implemented, bus type.
12
I2C_SCL
Clock line for I2C interface. Always implemented, bus type.
13
UART_RX
Receiver line of target device UART
14
UART_TX
Transmitter line of target device UART
15
SPI_SS_A
Slave select for SPI. Should preferably be unique.
Atmel SAM D20 Xplained Pro [USER GUIDE]
Atmel-42102D-SAM-D20-Xplained-Pro_User Guide-04/2016
9
3.4.2.
Pin number
Name
Description
16
SPI_MOSI
Master out slave in line of serial peripheral interface. Always
implemented, bus type.
17
SPI_MISO
Master in slave out line of serial peripheral interface. Always
implemented, bus type.
18
SPI_SCK
Clock for serial peripheral interface. Always implemented, bus type.
19
GND
Ground
20
VCC
Power for extension board
Xplained Pro Power Header
The power header can be used to connect external power to the SAM D20 Xplained Pro kit. The kit will
automatically detect and switch to any 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 when using the 3.3V pin.
Table 3-5. Xplained Pro Power Header
Pin number
Pin name
Description
1
VEXT_P5V0
External 5V input
2
GND
Ground
3
VCC_P5V0
Unregulated 5V (output, derived from one of the input sources)
4
VCC_P3V3
Regulated 3.3V (output, used as main power supply for the kit)
Atmel SAM D20 Xplained Pro [USER GUIDE]
Atmel-42102D-SAM-D20-Xplained-Pro_User Guide-04/2016
10
4.
Hardware Users Guide
4.1.
Connectors
This chapter describes the implementation of the relevant connectors and headers on SAM D20 Xplained
Pro and their connection to the ATSAMD20J18A. The tables of connections in this chapter also describes
which signals are shared between the headers and on-board functionality.
4.1.1.
Xplained Pro Standard Extension Headers
The SAM D20 Xplained Pro headers EXT1, EXT2, and EXT3 offer access to the I/O of the microcontroller
in order to expand the board e.g. by connecting extensions to the board. These headers all comply with
the standard extension header specified inTable 3-4 Xplained Pro Standard Extension Header. All
headers have a pitch of 2.54mm.
Table 4-1. Extension Header EXT1
Pin on EXT1
SAM D20 pin
Function
Shared functionality
1
-
-
Communication line to ID chip on
extension board.
2
-
-
GND
3
PB00
AIN[8]
4
PB01
AIN[9]
5
PB06
GPIO
6
PB07
GPIO
7
PB02
TC6/WO[0]
8
PB03
TC6/WO[1]
9
PB04
EXTINT[4]
10
PB05
GPIO
11
PA08
SERCOM2 PAD[0] I²C SDA
EXT2, EXT3, and EDBG
12
PA09
SERCOM2 PAD[1] I²C SCL
EXT2, EXT3, and EDBG
13
PB09
SERCOM4 PAD[1] UART RX(1)
14
PB08
SERCOM4 PAD[0] UART TX(1)
15
PA05
SERCOM0 PAD[1] SPI SS
16
PA06
SERCOM0 PAD[2] SPI MOSI
17
PA04
SERCOM0 PAD[0] SPI MISO
18
PA07
SERCOM0 PAD[3] SPI SCK
19
-
-
GND
20
-
-
VCC
Note: Atmel SAM D20 Xplained Pro [USER GUIDE]
Atmel-42102D-SAM-D20-Xplained-Pro_User Guide-04/2016
11
1.
The SERCOM4 module is shared between EXT1, 2, and 3 UART's, but uses different pins.
Table 4-2. Extension Header EXT2
Pin on EXT2
SAM D20 pin
Function
Shared functionality
1
-
-
Communication line to ID chip on
extension board.
2
-
-
GND
3
PA10
AIN[18]
4
PA11
AIN[19]
5
PA20
GPIO
6
PA21
GPIO
7
PA22
TC4/WO[0]
8
PA23
TC4/WO[1]
9
PB14
EXTINT[14]
10
PB15
GPIO
11
PA08
SERCOM2 PAD[0] I²C SDA
EXT1, EXT3, and EDBG
12
PA09
SERCOM2 PAD[1] I²C SCL
EXT1, EXT3, and EDBG
13
PB13
SERCOM4 PAD[1] UART RX(1)
14
PB12
SERCOM4 PAD[0] UART TX(1)
15
PA17
SERCOM1 PAD[1] SPI SS
16
PA18
SERCOM1 PAD[2] SPI MOSI
17
PA16
SERCOM1 PAD[0] SPI MISO
18
PA19
SERCOM1 PAD[3] SPI SCK
19
-
-
GND
20
-
-
VCC
Note: 1. The SERCOM4 module is shared between EXT1, 2, and 3 UART's, but uses different pins.
Table 4-3. Extension Header EXT3
Pin on EXT3
SAM D20 pin
Function
Shared functionality
1
-
-
Communication line to ID chip on
extension board.
2
-
-
GND
3
PA02
AIN[0]
4
PA03
AIN[1]
5
PB30
GPIO
Atmel SAM D20 Xplained Pro [USER GUIDE]
Atmel-42102D-SAM-D20-Xplained-Pro_User Guide-04/2016
12
Pin on EXT3
SAM D20 pin
Function
Shared functionality
6
PA15
GPIO
Onboard SW0
7
PA12
TC2/WO[0]
8
PA13
TC2/WO[1]
9
PA28
EXTINT[8]
10
PA27
GPIO
11
PA08
SERCOM2 PAD[0] I²C SDA
EXT1, EXT2, and EDBG
12
PA09
SERCOM2 PAD[1] I²C SCL
EXT1, EXT2, and EDBG
13
PB11
SERCOM4 PAD[3] UART RX(1)
14
PB10
SERCOM4 PAD[2] UART TX(1)
15
PB17
SERCOM5 PAD[1] SPI SS
16
PB22
SERCOM5 PAD[2] SPI MOSI
EDBG
17
PB16
SERCOM5 PAD[0] SPI MISO
EDBG
18
PB23
SERCOM5 PAD[3] SPI SCK
EDBG
19
-
-
GND
20
-
-
VCC
Note: 1. The SERCOM4 module is shared between EXT1, 2, and 3 UART's, but uses different pins.
4.1.2.
Current Measurement Header
An angled 1x2, 100mil pin-header marked with MCU current measurement is located at the upper edge of
the SAM D20 Xplained Pro. All power to the ATSAMD20J18A is routed through this header. To measure
the power consumption of the device remove the jumper and replace it with an ammeter.
Caution: Removing the jumper from the pin-header while the kit is powered may cause the
ATSAMD20J18A to be powered through its I/O pins. This may cause permanent damage to the
device.
4.2.
Peripherals
4.2.1.
Crystal
The SAM D20 Xplained Pro kit contains one crystals that can be used as clock source for the SAM D20
device. The crystal has a cut-strap next to it that can be used to measure the oscillator safety factor. This
is done by cutting the strap and adding a resistor across the strap. More information about oscillator
allowance and safety factor can be found in appnote AVR4100.
Atmel SAM D20 Xplained Pro [USER GUIDE]
Atmel-42102D-SAM-D20-Xplained-Pro_User Guide-04/2016
13
Table 4-4. External 32.768kHz Crystal
4.2.2.
Pin on SAM D20
Function
PA00
XIN32
PA01
XOUT32
Mechanical Buttons
SAM D20 Xplained Pro contains two mechanical buttons. One button is the RESET button connected to
the SAM D20 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 4-5. Mechanical Buttons
4.2.3.
Pin on SAM D20
Silkscreen text
RESETN
RESET
PA15
SW0
LED
There is one yellow LED available on the SAM D20 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 4-6. LED Connections
4.3.
Pin on SAM D20
LED
PA14
Yellow LED0
Embedded Debugger Implementation
SAM D20 Xplained Pro contains an Embedded Debugger (EDBG) that can be used to program and
debug the ATSAMD20J18A 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 monitors
four of the SAM D20 GPIOs. Atmel Studio can be used as a front end for the Embedded Debugger.
4.3.1.
Serial 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.
Table 4-7. SWD Connections
4.3.2.
Pin on SAM D20
Function
PA30
SWD clock
PA31
SWD data
Virtual COM Port
The Embedded Debugger acts as a Virtual Com Port gateway by using one of the ATSAMD20J18A
UARTs. For further information on how to use the Virtual COM port see Embedded Debugger.
Atmel SAM D20 Xplained Pro [USER GUIDE]
Atmel-42102D-SAM-D20-Xplained-Pro_User Guide-04/2016
14
Table 4-8. Virtual COM Port Connections
4.3.3.
Pin on SAM D20
Function
PA24
SERCOM3 PAD[2] UART TXD (SAM D20 TX line)
PA25
SERCOM3 PAD[3] UART RXD (SAM D20 RX line)
Atmel 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 D20 to the host PC. For further
information on how to use the DGI interface see Embedded Debugger.
Table 4-9. DGI Interface Connections When Using SPI
Pin on SAM D20
Function
PB31
SERCOM5 PAD[1] SPI SS (Slave select) (SAM D20 is Master)
PB16
SERCOM5 PAD[0] SPI MISO (Master In, Slave Out)
PB22
SERCOM5 PAD[2] SPI MOSI (Master Out, Slave in)
PB23
SERCOM5 PAD[3] SPI SCK (Clock Out)
Table 4-10. DGI Interface Connections When Using I²C
Pin on SAM D20
Function
PA08
SERCOM2 PAD[0] SDA (Data line)
PA09
SERCOM2 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 D20
application code. For further information on how to configure and use the GPIO monitoring features see
Embedded Debugger.
Table 4-11. GPIO Lines Connected To the EDBG
4.3.4.
Pin on SAM D20
Function
PA27
GPIO0
PA28
GPIO1
PA20
GPIO2
PA21
GPIO3
External Programming and Debugging
®
The SAM D20 Xplained Pro features a Cortex Debug Connector (10-pin) for programming and
debugging an external target. The connector is limited to the SWD interface and is intended for in-system
programming and debugging of SAM D20 devices in the users final products.
The debug connector is connected to the on-board EDBG through level shifters and switches. When an
external target voltage is detected, the EDBG will switch the SWD interface from the on-board target
device to the external debug connector and the green LED next to the connector will be lit. The voltage of
the external target must be between 1.6V and 5.0V.
Atmel SAM D20 Xplained Pro [USER GUIDE]
Atmel-42102D-SAM-D20-Xplained-Pro_User Guide-04/2016
15
Important: This connector can't be used for attaching an external debug unit for programming
and debugging the on-board device.
Table 4-12. Cortex Debug Connector
Pin on connector
Specification
Function implemented
1
VCC
VCC
2
SWDIO / TMS
SWDIO
3
GND
GND
4
SWDCLK / TCK
SWDCLK
5
GND
GND
6
SWO / TDO
NC
7
KEY
NC
8
NC / TDI
NC
9
GNDDetect
GND
10
nRESET
nRESET
Atmel SAM D20 Xplained Pro [USER GUIDE]
Atmel-42102D-SAM-D20-Xplained-Pro_User Guide-04/2016
16
5.
5.1.
Appendix
Getting Started with IAR
®
®
IAR Embedded Workbench for ARM is a proprietary high efficiency compiler not based on GCC.
™
Programming and debugging of Xplained Pro kits are supported in IAR Embedded Workbench for ARM
using the common CMSIS-DAP interface. Some initial settings have to be set up in the project to get the
programming and debugging to work.
The following steps will explain how to get your project ready for programming and debugging:
1.
2.
3.
4.
5.
6.
Make sure you have opened the project you want to configure. Open the OPTIONS dialog for the
project.
In the category General Options, select the Target tab. Select the device for the project or, if not
listed, the core of the device.
In the category Debugger, select the Setup tab. Select CMSIS DAP as the driver.
In the category Debugger, select the Download tab. Check the check box for Use flash loader(s)
option.
In the category Debugger > CMSIS DAP, select the Setup tab. Select System (default) as the
reset method.
In the category Debugger > CMSIS DAP, select the JTAG/SWD tab. Select SWD as the interface
and optionally select the SWD speed.
Figure 5-1. Select Target Device
Atmel SAM D20 Xplained Pro [USER GUIDE]
Atmel-42102D-SAM-D20-Xplained-Pro_User Guide-04/2016
17
Figure 5-2. Select Debugger
Figure 5-3. Configure Flash Loader
Atmel SAM D20 Xplained Pro [USER GUIDE]
Atmel-42102D-SAM-D20-Xplained-Pro_User Guide-04/2016
18
Figure 5-4. Configure Reset
Figure 5-5. Configure Interface
Atmel SAM D20 Xplained Pro [USER GUIDE]
Atmel-42102D-SAM-D20-Xplained-Pro_User Guide-04/2016
19
6.
Hardware Revision and Known Issues
6.1.
Identifying Product ID and Revision
The revision and product identifier of Xplained Pro boards can be found in two ways; either through Atmel
Studio or by looking at the sticker on the bottom side of the PCB.
By connecting an 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 Kit's 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 product identifier for SAM D20 Xplained Pro is A09-1873.
6.2.
Revision 5
Revision 5 of SAM D20 Xplained Pro has revision C of the SAMD20J18A device mounted
Known issues
•
VDDCORE decoupling capacitor
The VDDCCORE output pin on SAMD20J18A has two decoupling capacitors, one 100nF and one
4.7μF. This might lead to a high power consumption when leaving STANDBY sleep mode and the
regulator returns to normal operating mode.
Fix/Workaround:
–
6.3.
Change the 4.7μF tantalum capacitor (C315) to 1μF ceramic capacitor.
Revision 4
Revision 4 of SAM D20 Xplained Pro is the initial released version.
Known issues
•
PTC in self-capacitance mode
Revision B of the SAM D20 is mounted on this kit. The two lowest gain settings are not selectable
and an attempt by the QTouch Library to set enable of these may result in a higher sensitivity than
optimal for the sensor. The PTC will not detect all touches. This errata does not affect mutualcapacitance mode which operates as specified.
Atmel SAM D20 Xplained Pro [USER GUIDE]
Atmel-42102D-SAM-D20-Xplained-Pro_User Guide-04/2016
20
Fix/Workaround:
–
•
Use SAM D20 revision C or later for self-capacitance capacitive touch sensing. These are
mounted on revision 5 or later of the SAM D20 Xplained Pro kit.
VDDCORE decoupling capacitor
The VDDCCORE output pin on SAMD20J18A has two decoupling capacitors, one 100nF and one
4.7μF. This might lead to a high power consumption when leaving STANDBY sleep mode and the
regulator returns to normal operating mode.
Fix/Workaround:
–
Change the 4.7μF tantalum capacitor (C315) to 1μF ceramic capacitor.
Atmel SAM D20 Xplained Pro [USER GUIDE]
Atmel-42102D-SAM-D20-Xplained-Pro_User Guide-04/2016
21
7.
Document Revision History
Doc. rev.
Date
Comment
42102D
04/2016
Added Getting Started with IAR.
42102C
02/2014
Updated Revision 5 and Table 4-3 Extension Header EXT3.
42102B
10/2013
Updated Revision 4.
42102A
06/2013
First release.
Atmel SAM D20 Xplained Pro [USER GUIDE]
Atmel-42102D-SAM-D20-Xplained-Pro_User Guide-04/2016
22
8.
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.
Mailing Address:
Atmel Corporation
1600 Technology Drive
San Jose, CA 95110
USA
Atmel SAM D20 Xplained Pro [USER GUIDE]
Atmel-42102D-SAM-D20-Xplained-Pro_User Guide-04/2016
23
Atmel Corporation
©
1600 Technology Drive, San Jose, CA 95110 USA
T: (+1)(408) 441.0311
F: (+1)(408) 436.4200
|
www.atmel.com
2016 Atmel Corporation. / Rev.: Atmel-42102D-SAM-D20-Xplained-Pro_User Guide-04/2016
®
®
®
®
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. Microsoft , Windows , and Windows Vista are registered trademarks of Microsoft Corporation in U.S. and or other
®
countries. ARM 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 TO, THE IMPLIED WARRANTY OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT. IN NO EVENT SHALL ATMEL BE LIABLE FOR ANY DIRECT, INDIRECT,
CONSEQUENTIAL, PUNITIVE, SPECIAL OR INCIDENTAL DAMAGES (INCLUDING, WITHOUT LIMITATION, DAMAGES FOR LOSS AND PROFITS, BUSINESS
INTERRUPTION, OR LOSS OF INFORMATION) ARISING OUT OF THE USE OR INABILITY TO USE THIS DOCUMENT, EVEN IF ATMEL HAS BEEN ADVISED
OF THE POSSIBILITY OF SUCH DAMAGES. Atmel makes no representations or warranties with respect to the accuracy or completeness of the contents of this
document and reserves the right to make changes to specifications and products 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 of such products would reasonably be expected to result in significant personal injury or death (“Safety-Critical Applications”) without
an Atmel officer's specific written consent. Safety-Critical Applications include, without limitation, life support devices and systems, equipment or systems for the
operation of nuclear facilities and weapons systems. Atmel products are not designed nor intended for use in military or aerospace applications or environments
unless specifically designated by Atmel as military-grade. Atmel products are not designed nor intended for use in automotive applications unless specifically
designated by Atmel as automotive-grade.
Was this manual useful for you? yes no
Thank you for your participation!

* Your assessment is very important for improving the work of artificial intelligence, which forms the content of this project

Download PDF

advertisement