Atmel SAM D21 Xplained Pro (USER GUIDE)
Contents
1. 7 3 4 Standard Headers and Connectors 7 3 4 1 Xplained Pro Standard Extension Header 7 3 4 2 Xplained Pro Power Header 8 4 Hardware User Guide 10 4 1 OOnleClOlS 10 4 1 1 I O Extension Headers 10 4 2 RD 11 4 245 Gryslall 11 42 2 Mechanical Buttons i nn praet nen irren 12 423 LED 12 LU MENSIS 12 42 5 EM 12 4 3 Embedded Debugger Implementation 13 4 3 1 Serial Wire Debug 13 4 3 2 Virtual COM even es Ea Rer Rua 13 4 3 3 Atmel Data Gateway Interface 13 5 Hardware Revision History and Known Issues 14 5 1 Identifying Product ID and Revision 14 9 23 REVISIOM DUREE 14 6 Document Revision History 15 7 Evaluation Board Kit Important Notice 16 Atmel SAM D21 Xplained Pro USER GUIDE 2 42220A MCU 02 2014 1 1 1 2 Atmel Introduction Features Atmel ATSAMD21J12. 1769 7 man t GNO 1969 SELECT JUMPER SELECT 32kHz CRYSTAL SAMD21J18A 2 8 Mbit SERIAL 5 1 GND 1 gt FLASH SAMD21J18A Batt 20 4 20 PA21 569 12 13 76 4 Pots 15 06 EXTENSION 2 PAOS PADD 116 E HEADER 11 10 13 amp 4 PAIT PAIS 15 6 6 Q PAIG PAN 17 CY 06 f os P022 P017 P810 P011 A09 PADS gt 27 28 gt PAIS 12 PAS PAZ lt PAIS 30 VES 3 EXTENSION 3 HEADER Atmel Atmel SAM D21 Xplained Pro USER GUIDE 42220A MCU 02 2014 4 2 1 2 2 2 3 Getting Started Quick start 3 Steps to start exploring the Atmel Xplained Pro Platform e Download and install Atmel Studio e Launch Atmel Studio e Connect a Micro B cable to the DEBUG USB port Connecting the Kit When connecting Atmel SAM D21 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 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 applic
3. USER GUIDE Atmel 021 Xplained Pro Preface The Atmel SAM 021 Xplained Pro evaluation kit is a hardware platform to evaluate the ATSAMD21J18A microcontroller Supported by the Atmel Studio integrated development platform the kit provides easy access to the features of the Atmel ATSAMD21J18A 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 ATSAMD21J18A The Xplained Pro extension kits offers additional peripherals to extend the features of the board and ease the development of custom designs 42220A MCU 02 2014 Atmel Table of Contents Preface ASE 1 1 Introd ction tr ete cox ee ene a x len eie 3 ki Feats 3 T27 OVEIVIOW coton iod eet cee tence een 3 2 Getting Started 5 2 1 Quickestart intel SA 5 2 2 Connecting the KIT soo oerte Deep EE 5 2 3 Design Documentation and Related Links 5 3 Xplained Pro ee 6 3 4 Embedded Deb gger 5 reote dte 6 3 2 Hardware Identification System seen 6 2 9 jJPower Supply sioe dE RR IIS Miete SPERA 7 3 3 1 Measuring SAM D21 Power Consumption
4. PAD 1 UART RX 14 USART_TX PB10 SERCOM4 PAD 0 UART TX 15 SPI_SS_A PB17 5 PAD 1 SPI 16 SPI_MOSI PB22 SERCOM5 PAD 2 SPI MOSI EDBG and Serial Flash 17 SPI_MISO PB16 5 PAD 0 SPI MISO EDBG and Serial Flash 18 SPI_SCK PB23 SERCOM5 PAD 3 SPI SCK EDBG and Serial Flash 19 GND GND 20 VCC VCC Notes 1PA03 can be used by USB ID or EXT3 PIN4 by changing the position of the jumper JS300 on J307 PA13 is by default connected to the Serial Flash SS line and is disconnected from the EXT3 This can be changed by moving the 0 Ohm resistor R314 to R313 3The SERCOM4 module is shared between EXT1 2 and 3 UART s but uses different pins on EXT1 and EXT2 3 4 2 Peripherals 4 2 1 Crystal The SAM D21 Xplained Pro kit contains one crystals that can be used as clock source for the SAM D21 device The crystal has a cut strap next to it that can be used to measure the oscillator safety factor This is done by Atmel Atmel SAM D21 Xplained Pro USER GUIDE 11 42220A MCU 02 2014 4 2 2 4 2 3 4 2 4 4 2 5 cutting the strap and adding a resistor across the strap More information about oscillator allowance and safety factor can be found in appnote 4100 Table 4 4 External 32 768kHz Crystals Pinon 021 Function PAOO XIN32 PAO1 XOUT32 Mechanical Buttons SAM D21 Xplained Pro contains two mechanical buttons One button is the RESET button connected to the SAM D21 r
5. registered trademark of Microsoft Corporation in U S and or other countries 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 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 specificall
6. 200000010 0 http store atmel com CBC aspx q c 100113 http www atmel com Images Atmel 42096 Microcontrollers Embedded Debugger_User Guide pdf Atmel Atmel SAM D21 Xplained Pro USER GUIDE 6 42220A MCU 02 2014 Data Field Data Type Example Content Minimum Voltage mV uint16 t 3000 Maximum Voltage mV uint16 t 3600 Maximum Current mA uint16 t 30 3 3 Power Supply The SAM D21 Xplained Pro kit can be powered either by USB or by an external power source through the 4 pin 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 D21 Xplained Pro on page 7 Table 3 3 Power Sources for 021 Xplained Pro Voltage requirements Current requirements Euer marking External power 2 100mV for Recommended USB host operation minimum is 1A to 4 3V to 5 5V if USB host able to provide operation is not required n ough current for connected USB devices and the board itself Recommended maximum is 2A due to the input protection maximum current specification Embedded debugger 4 4V to 5 25V 500mA according to DEBUG USB USB according to USB spec USB spec Target USB 4 4V to 5 25V 500mA according to TARGET USB according to USB spec USB spec The kit will automatically detect which power sources are available and choose which one to use according to the foll
7. 21 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 ATSAMD21J18A On the SAM 021 Xplained Pro the SWD interface is connected between the EDBG and the ATSAMD21J18A The Virtual COM Port is connected to a UART port on the ATSAMD21J18A see section Embedded Debugger Implementation on page 13 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 13 for available interfaces and pinout Communication over the interfaces are bidirectional It can be used to send events and values from the ATSAMD21J18A 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 021 Xplained Pro a
8. 3 Table 4 2 Extension Header EXT2 1 ID Communication line to ID chip on extension board 2 GND GND 3 ADC PA10 AIN 18 4 ADC PA11 AIN 19 5 GPIO1 PA20 GPIO 6 GPIO2 PA21 GPIO 7 PWM PB12 TC4 WO 0 8 PWM PB13 TCA4 WO 1 Atmel Atmel SAM D21 Xplained Pro USER GUIDE 10 42220A MCU 02 2014 9 IRQ GPIO PB14 EXTINT 14 10 SPI_SS_B GPIO PB15 GPIO 11 TWI_SDA PA08 SERCOM2 PAD 0 PC SDA EXT1 EXT3 and EDBG 12 TWI_SCL 9 SERCOM2 PAD 1 PC SCL EXT1 EDBG 13 USART_RX 11 SERCOM4 PAD 1 UART 14 USART TX PB10 SERCOM4 PAD 0 UART m EXT3 15 SPI SS A PA17 SERCOM1 PAD 1 SPI SS 16 SPI MOSI PA18 SERCOM1 PAD 2 SPI MOSI 17 SPI MISO PA16 SERCOM1 PAD 0 SPI MISO 18 SPI SCK PA19 SERCOM1 PAD 3 SPI SCK 19 GND 2 GND 20 VCC VCC Notes The SERCOM4 module is shared between EXT1 2 and 3 UART s but uses different pins on EXT1 and EXT2 3 Table 4 3 Extension Header EXT3 1 ID Communication line to ID chip on extension board 2 GND GND ADC PA02 AIN O 4 ADC AIN 1 USB ID 5 GPIO1 PB30 GPIO Onboard LEDO 6 GPIO2 PA15 GPIO Onboard SWO PWM PA12 TC2 WO 0 8 PWM PA13 TC2 WO 1 Serial Flash SS 9 IRQ GPIO PA28 EXTINT 8 10 SPI SS B GPIO PA27 GPIO 11 TWI SDA 8 2 PAD 0 PC SDA EXT1 EXT2 and EDBG 12 TWI_SCL 9 SERCOM2 PAD 1 PC SCL EXT1 EXT2 and EDBG 13 USART_RX PB11 SERCOMA
9. 8A microcontroller Embedded debugger EDBG e USB interface e Programming and debugging on board SAM D21 through Serial Wire Debug SWD e Virtual COM port interface to target via UART e Atmel Data Gateway Interface DGI to target via SPI and TWI e Four GPIOs connected to target for code instrumentation Digital I O e Two mechanical buttons user and reset button One user LED e Three extension headers Three possible power sources e External power e Embedded debugger USB e Target USB 32kHz crystal USB interface device and reduced host mode 8Mbit Serial Flash Kit Overview The Atmel SAM D21 Xplained Pro evaluation kit is a hardware platform to evaluate the Atmel ATSAMD21J18A The kit offers a set of features that enables the ATSAMD21J18A user to get started using the ATSAMD21J18A peripherals right away and to get an understanding of how to integrate the device in their own design Atmel SAM D21 Xplained Pro USER GUIDE 3 42220A MCU 02 2014 Figure 1 1 021 Xplained Pro Evaluation Kit Overview CURRENT MEASUREMENT 0 USER BUTTON HEADER RESET BUTTON TARGET USB pi DEBUG USB are USER LEDO 1 re sow veo E Atmel ee PB00 PRO 56 2 7S H TT NET EXTENSION 1 usso paos 1169 lt HEADER jaos PB09 1369 7 Paos PADS 1565 7 sme OR m Paos
10. MISO SO EXT3 and EDBG 23 SERCOMS PAD 3 SPI SCK SCK EXT3 and EDBG http www atmel com images doc8333 pdf Atmel Atmel SAM D21 Xplained Pro USER GUIDE 12 42220A MCU 02 2014 4 3 4 3 1 4 3 2 4 3 3 Embedded Debugger Implementation SAM D21 Xplained Pro contains an Embedded Debugger EDBG that can be used to program and debug the ATSAMD21J18A 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 D21 GPIOs Atmel Studio can be used as a front end for the Embedded Debugger 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 on page 6 Table 4 9 SWD Connections SWD clock PA31 SWD data Virtual COM Port The Embedded Debugger acts as a Virtual Com Port gateway by using one of the ATSAMD21J18A UARTS For further information on how to use the Virtual COM port see Embedded Debugger on page 6 Table 4 10 Virtual COM Port Connections Pin on SAM D21 PA22 SERCOM3 PAD 0 UART TXD SAM D21 TX line PA23 SERCOMS PAD 1 UART SAM 021 RX line Atmel Data Gateway Interface The Embedded Debugger features an Atmel Data Gateway Interface DGI by using either a SPI or port The DGI can be used to
11. ations 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 guide for information regarding how to compile and program the kit Design Documentation and Related Links The following list contains links to the most relevant documents and software for SAM D21 Xplained Pro 1 Xplained Pro products Atmel Xplained Pro is a series of small sized and easy to use evaluation kits for 8 and 32 bit Atmel microcontrollers It consists of a series of low cost MCU boards for evaluation and demonstration of features and capabilities of different MCU families 2 021 Xplained Pro User Guide PDF version of this User Guide 3 SAM D21 Xplained Pro Design Documentation Package containing schematics BOM assembly drawings 3D plots layer plots etc 4 EDBG User Guide User guide containing more information about the onboard Embedded Debugger 5 Atmel Studio Free Atmel IDE for development of and assembler code for Atmel microcontrollers 6 IAR Embedded Workbench for 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 MO and M1 cores and 32KB for devices with other cores 7 Atmel sample store Atmel sample store where
12. eset line and the other is a generic user configurable button When a button is pressed it will drive the line to GND Table 4 5 Mechanical Buttons Pinon 021 Silkscreen text RESETN RESET PA15 SWO LED There is one yellow LED available on the SAM D21 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 021 LED PB30 Yellow LEDO USB The SAM D21 Xplained Pro has a micro USB receptable for use with the SAM D21 USB module To be able to detect when a USB cable is connected a GPIO is used to detect the VBUS voltage on the connector The USB ID line is used to detect if a host mode cable is connected and will automatically switch on the power to the USB connector The I O connected to USB ID can be used to read the status of the line or manually override the voltage output For other modes on the USB ID lines refer to the USB organization specifications Table 4 7 USB Connections Pin on SAM 021 USB PA14 VBUS Detection USB ID PA24 USB D PA25 USB D Serial Flash The SAM D21 Xplained Pro has an onboard 8Mbit serial flash for non voltatile storage of data Table 4 8 Serial Flash Connections Pin on SAM D21 Function Serial Flash Shared functionality PA13 GPIO CS EXT3 PIN8 default disconnected PB22 SERCOM5 PAD 2 SPI MOSI SI EXT3 and EDBG PB16 SERCOM5 PAD 0 SPI
13. its 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 nnnnVr 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 revision serial number The kit identifier for 021 Xplained Pro is 2130 5 2 Revision 2 Revision 2 of SAM D21 Xplained Pro is the initial released version Atmel SAM D21 Xplained Pro USER GUIDE 14 Atmel 42220A MCU 02 2014 6 Document Revision History Document Comment revision 42220A 02 2014 Initial document release Atmel Atmel SAM D21 Xplained Pro USER GUIDE 15 42220A MCU 02 2014 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 e
14. mented 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 D21 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 current measurement header refer to Figure 1 1 SAM D21 Xplained Pro Evaluation Kit Overview on page 4 Table 3 5 Power Header PWR 1 VEXT P5VO External 5V input 2 GND Ground 3 VCC P5VO Unregulated 5V output derived from one of the input sources Atmel SAM D21 Xplained Pro USER GUIDE 8 42220A MCU 02 2014 Pin number PWR header Pin name Description 4 VCC_P3V3 Regulated 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 Atmel Atmel SAM D21 Xplained Pro USER GUIDE 9 42220A MCU 02 2014 4 1 Hardware User Guide Connectors This chapter describes the implementa
15. owing 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 1 Measuring SAM D21 Power Consumption As part of an evaluation of the SAM 021 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 021 Xplained Pro Evaluation Kit Overview page 4 Warning Do not power the board without having the jumper or an ammeter mounted This can cause the SAM D21 to be powered through its I O pins and cause undefined operation of the device 3 4 Standard Headers and Connectors 3 4 1 Xplained Pro Standard Extension Header Atmel 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 Atmel SAM D21 Xplained Pro USER GUIDE 7 42220A MCU 02 2014 3 4 2 Atmel always connected However all the connected pin
16. 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 mode Power LED Status LED Normal operation Power LED is lit when power is Activity indicator LED flashes applied to the board every time something happens on the EDBG 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 Guide 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 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 Table 3 2 Xplained Pro ID Chip Content Data Field Data Type Example Content Manufacturer ASCII string Atmel O Product Name ASCII string Segment LCD1 Xplained Pro 0 Product Revision ASCII string 02 0 Product Serial Number ASCII string 1774020
17. s 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 number Description 1111 1 ID Communication line to the ID chip on 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 GPIO1 General purpose GPIO2 General purpose PWM Pulse width modulation alternatively positive part of differential PWM 8 PWM Pulse width modulation alternatively positive part of differential PWM 9 IRQ GPIO Interrupt request line and or general purpose 10 SPI SS B GPIO Slave select for SPI and or general purpose 11 TWI SDA Data line for two wire interface Always implemented bus type 12 TWI SCL Clock line for two wire interface Always implemented bus type 13 USART RX Receiver line of Universal Synchronous and Asynchronous serial Receiver and Transmitter 14 USART TX Transmitter line of Universal Synchronous and Asynchronous serial Receiver and Transmitter 15 SPI SS A Slave select for SPI Should be unique if possible 16 SPI MOSI Master out slave in line of Serial peripheral interface Always imple
18. send a variety of data from the SAM D21 to the host PC For further information on how to use the DGI interface see Embedded Debugger on page 6 Table 4 11 DGI Interface Connections when using SPI PB31 SERCOMS PAD 1 SPI SS Slave select SAM 021 is Master PB16 0 SPI MISO Master In Slave Out PB22 SERCOMS PAD 2 SPI MOSI Master Out Slave in PB23 SERCOMS PADI3 SPI SCK Clock Out Table 4 12 DGI Interface Connections when using LLIILIANENEEML NM 8 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 D21 application code For further information on how to configure and use the GPIO monitoring features see Embedded Debugger on page 6 Table 4 13 GPIO Lines Connected to the EDBG PA27 GPIOO _ 28 GPIO1 PA20 GPIO2 PA21 GPIO3 Atmel Atmel SAM D21 Xplained Pro USER GUIDE 13 42220A MCU 02 2014 5 Hardware Revision History and Known Issues 5 1 Identifying 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 dig
19. tion of the relevant connectors and headers on SAM 021 Xplained Pro and their connection to the ATSAMD21J18A The tables of connections in this chapter also describes which signals are shared between the headers and on board functionality Extension Headers The SAM D21 Xplained Pro headers EXT1 EXT2 and 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 in Xplained Pro Standard Extension Header page 7 All headers have a pitch of 2 54 mm Table 4 1 Extension Header EXT1 1 ID Communication line to ID chip on extension board 2 GND 2 GND 3 ADC PBOO AIN 8 4 ADC 1 AIN 9 5 GPIO1 6 GPIO2 PBO7 GPIO 7 PWM 2 TC6 WO O 8 PWM TC6 WO 1 9 IRQ GPIO PB04 EXTINTI 4 10 SPI SS B GPICO PB05 GPIO 11 TWI_SDA PA08 SERCOM2 PAD 0 PC SDA EXT2 EXT3 and EDBG 12 TWI_SCL 9 SERCOM2 PAD 1 2 SCL EXT2 EXT3 and EDBG 13 USART_RX PBO9 SERCOM4 PAD 1 UART RX 14 USART_TX PB08 SERCOM4 PAD 0 UART TX 15 SPI_SS_A PA05 SERCOMO PAD 1 SPI SS 16 SPI MOSI SERCOMO PAD 2 SPI MOSI 17 SPI MISO 4 SERCOMO PAD 0 SPI MISO 18 SPI SCK PAO7 SERCOMO PAD 3 SPI SCK 19 GND GND 20 VCC VCC Notes uu The SERCOM4 module is shared between EXT1 2 and 3 UART s but uses different pins on EXT1 and EXT2
20. xcept 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 Atmel Atmel SAM D21 Xplained Pro USER GUIDE 16 42220A MCU 02 2014 Atmel Enabling Unlimited Possibilities Atmel Corporation 1600 Technology Drive San Jose CA 95110 USA T 1 408 441 0311 1 408 436 4200 www atmel com 2014 Atmel Corporation All rights reserved Rev 42220A MCU 02 2014 Atmel Atmel logo and combinations thereof Enabling Unlimited Possibilities AvR and others are registered trademarks or trademarks of Atmel Corporation or its subsidiaries Windows is a
21. y 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
22. you can order samples of devices l http www atmel com atmelstudio 2 http www atmel com atmelstudio 2 http www atmel com XplainedPro li http www atmel com Images Atmel 42220 SAMD21 Xplained Pro_User Guide pdf http www atmel com Images Atmel 42220 SAMD21 Xplained Pro_User Guide zip 8 http www atmel com Images Atmel 42096 Microcontrollers Embedded Debugger_User Guide pdf 7 http www atmel com atmelstudio a http www iar com en Products IAR Embedded Workbench ARM 2 http www atmel com system samplesstore Atmel Atmel SAM D21 Xplained Pro USER GUIDE 5 42220A MCU 02 2014 3 1 3 2 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 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 Store Embedded Debugger The SAM D
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