ATSAM4N-XSTK

SMART ARM-based Microcontrollers SAM4N Xplained Pro USER GUIDE Preface ® The Atmel SAM4N Xplained Pro evaluation kit is a hardware platform to evaluate the ATSAM4N16C microcontroller. Supported by the Atmel Studio integrated development platform, the kit provides easy access to the features of the Atmel ATSAM4N16C 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 ATSAM4N16C. The Xplained Pro extension kits offers additional peripherals to extend the features of the board and ease the development of custom designs. Atmel-42104B-SAM4N-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 User Guide.............................................................................................. 11 4.1. 4.2. 4.3. Connectors................................................................................................................................. 11 4.1.1. Xplained Pro Standard Extension Headers..................................................................11 4.1.2. Other Headers............................................................................................................. 13 4.1.3. Current Measurement Header..................................................................................... 14 Peripherals................................................................................................................................. 14 4.2.1. Crystals........................................................................................................................14 4.2.2. Mechanical Buttons..................................................................................................... 15 4.2.3. LED..............................................................................................................................15 4.2.4. Analog Reference........................................................................................................ 15 Embedded Debugger Implementation........................................................................................15 4.3.1. Serial Wire Debug........................................................................................................16 4.3.2. 4.3.3. Virtual COM Port..........................................................................................................16 Atmel Data Gateway Interface.....................................................................................16 5. Appendix..................................................................................................................18 5.1. Getting Started with IAR.............................................................................................................18 6. Hardware Revision History and Known Issues........................................................21 6.1. 6.2. Identifying Product ID and Revision........................................................................................... 21 Revision 2...................................................................................................................................21 7. Document Revision History..................................................................................... 22 8. Evaluation Board/Kit Important Notice.....................................................................23 Atmel SAM4N Xplained Pro [USER GUIDE] Atmel-42104B-SAM4N-Xplained-Pro_User Guide-04/2016 2 1. Introduction 1.1. Features • • • • • • 1.2. Atmel ATSAM4N16C microcontroller Embedded debugger (EDBG) – USB interface – Programming and debugging (target) through Serial Wire Debug (SWD) – Virtual COM-port interface to target via UART – Atmel Data Gateway Interface (DGI) to target via synchronous USART or 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 – Three spare signal headers Two possible power sources – External power – Embedded debugger USB 12MHz crystal 32kHz crystal Kit Overview The Atmel SAM4N Xplained Pro evaluation kit is a hardware platform to evaluate the Atmel ATSAM4N16C. The kit offers a set of features that enables the ATSAM4N16C user to get started using the ATSAM4N16C peripherals right away and to get an understanding of how to integrate the device in their own design. Atmel SAM4N Xplained Pro [USER GUIDE] Atmel-42104B-SAM4N-Xplained-Pro_User Guide-04/2016 3 Figure 1-1. SAM4N Xplained Pro Evaluation Kit Overview Atmel SAM4N Xplained Pro [USER GUIDE] Atmel-42104B-SAM4N-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 SAM4N 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 SAM4N 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 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. Hardware Users Guide in PDF format - PDF version of this User Guide. Design Documentation - Package containing CAD source, schematics, BOM, assembly drawings, 3D plots, layer plots etc. Atmel SAM4N Xplained Pro [USER GUIDE] Atmel-42104B-SAM4N-Xplained-Pro_User Guide-04/2016 5 • SAM4N Xplained Pro on the Atmel website - Atmel website link. Atmel SAM4N Xplained Pro [USER GUIDE] Atmel-42104B-SAM4N-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 SAM4N 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 ATSAM4N16C. On SAM4N Xplained Pro, the SWD interface is connected between the EDBG and the ATSAM4N16C. The Virtual COM Port is connected to a UART on the ATSAM4N16C 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 ATSAM4N16C 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 ATSAM4N16C. 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 ATSAM4N16C 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 SAM4N 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 SAM4N Xplained Pro [USER GUIDE] Atmel-42104B-SAM4N-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 SAM4N Xplained Pro kit can be powered by several power sources as listed in the table below. Table 3-3. Power Sources for SAM4N 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 SAM4N Xplained Pro [USER GUIDE] Atmel-42104B-SAM4N-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 SAM4N Xplained Pro [USER GUIDE] Atmel-42104B-SAM4N-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 SAM4N 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 SAM4N Xplained Pro [USER GUIDE] Atmel-42104B-SAM4N-Xplained-Pro_User Guide-04/2016 10 4. Hardware User Guide 4.1. Connectors This chapter describes the implementation of the relevant connectors and headers on SAM4N Xplained Pro and their connection to the ATSAM4N16C. 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 SAM4N Xplained Pro headers EXT1, EXT2, and EXT3 offers 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 Xplained Pro standard extension header. All headers have a pitch of 2.54mm. Table 4-1. Extension Header EXT1 Pin on EXT1 SAM4N pin Function Shared functionality 1 - - Communication line to ID chip on extension board 2 - - GND 3 PA17 AD0 4 PA18 AD1 5 PA24 GPIO 6 PA25 GPIO SPARE HEADER2 7 PC23 TIOA3 SPARE HEADER2 8 PC24 TIOB3 SPARE HEADER2 9 PA0 WKUP0 10 PA23 GPIO 11 PA3 TWD0 EXT3 12 PA4 TWCK0 EXT3, SPARE HEADER1 13 PA21 RXD1 14 PA22 TXD1 15 PA11 NPCS0 16 PA13 SPI_MOSI EXT2, EXT3 17 PA12 SPI_MISO EXT2, EXT3 18 PA14 SPI_SCK EXT2, EXT3 19 - - GND 20 - - VCC Atmel SAM4N Xplained Pro [USER GUIDE] Atmel-42104B-SAM4N-Xplained-Pro_User Guide-04/2016 11 Table 4-2. Extension Header EXT2 Pin on EXT2 SAM4N pin Function Shared functionality 1 - - Communication line to ID chip on extension board 2 - - GND 3 PA19 AD2 4 PA20 AD3 5 PC0 GPIO 6 PC1 GPIO 7 PC26 TIOA4 8 PC27 TIOB4 9 PA1 WKUP1 10 PC8 GPIO 11 PB0 TWD2 EDBG 12 PB1 TWCK2 EDBG 13 PA5 RXD0 14 PA6 TXD0 15 PC4 NPCS1 16 PA13 SPI_MOSI EXT1, EXT3 17 PA12 SPI_MISO EXT1, EXT3 18 PA14 SPI_SCK EXT1, EXT3 19 - - GND 20 - - VCC Table 4-3. Extension Header EXT3 Pin on EXT3 SAM4N pin Function Shared functionality 1 - - Communication line to ID chip on extension board 2 - - GND 3 PC29 AD13 4 PC30 AD14 5 PC2 GPIO 6 PC3 GPIO 7 PA26 TIOA2 8 PA27 TIOB2 Atmel SAM4N Xplained Pro [USER GUIDE] Atmel-42104B-SAM4N-Xplained-Pro_User Guide-04/2016 12 4.1.2. Pin on EXT3 SAM4N pin Function Shared functionality 9 PB2 WKUP12 10 PB3 GPIO 11 PA3 TWD0 EXT1 12 PA4 TWCK0 EXT1, SPARE HEADER1 13 PB10 URXD3 14 PB11 UTXD3 15 PC7 NPCS2 16 PA13 SPI_MOSI EXT1, EXT2 17 PA12 SPI_MISO EXT1, EXT2 18 PA14 SPI_SCK EXT1, EXT2 19 - - GND 20 - - VCC Other Headers In addition to the Xplained Pro standard extension headers, SAM4N Xplained Pro has three additional headers with spare signals that offers access to the I/O of the microcontroller that are otherwise not easily available elsewhere or might be favorable to have collected together. All headers have a pitch of 2.54mm. Table 4-4. SPARE SIGNALS Header 1 Pin on header SAM4N pin Function Shared functionality 1 PA4 TWCK0 EXT1, EXT3 2 PA28 TCLK1 3 PA29 TCLK2 4 PC25 TCLK3 5 PC28 TCLK4 6 PC31 TCLK5 7 PC16 PCK0 8 PC17 PCK1 9 PA31 PCK2 10 PB4 PWM2 11 - - VCC 12 - - GND Atmel SAM4N Xplained Pro [USER GUIDE] Atmel-42104B-SAM4N-Xplained-Pro_User Guide-04/2016 13 Table 4-5. SPARE SIGNALS Header 2 Pin on header SAM4N pin Function Shared functionality 1 PA15 UTXD2 2 PA16 URXD2 3 PC5 GPIO 4 PC6 GPIO 5 PC11 GPIO 6 PC22 GPIO 7 PC23 TIOA3 EXT1 8 PC24 TIOB3 EXT1 9 PA25 GPIO EXT1 10 PC12 AD12 11 - - VCC 12 - - GND Shared functionality Table 4-6. SPARE SIGNALS Header 3 4.1.3. Pin on header SAM4N pin Function 1 PC13 AD10 2 PC15 AD11 3 PA2 DATRG 4 PB13 DAC0 5 - - VCC 6 - - GND Current Measurement Header An angled 1x2, 100mil pin-header marked with MCU current measurement is located at the upper edge of the SAM4N Xplained Pro. All power to the ATSAM4N16C 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 ATSAM4N16C to be powered through its I/O pins. This may cause permanent damage to the device. 4.2. Peripherals 4.2.1. Crystals The SAM4N Xplained Pro kit contains two crystals that can be used as clock sources for the SAM4N device. Each crystal has a cut-strap next to it that can be used to measure the oscillator safety factor. Atmel SAM4N Xplained Pro [USER GUIDE] Atmel-42104B-SAM4N-Xplained-Pro_User Guide-04/2016 14 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 applicaton note AVR4100. Calculations for the selected crystal can be found in the schematics documentation of the board. Table 4-7. External 32.768kHz Crystal Pin on SAM4N Function PA7 XIN32 PA8 XOUT32 Table 4-8. External 12MHz Crystal 4.2.2. Pin on SAM4N Function PB9 XIN PB8 XOUT Mechanical Buttons SAM4N Xplained Pro contains two mechanical buttons. One button is the RESET button connected to the SAM4N 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 4-9. Mechanical Buttons 4.2.3. Pin on SAM4N Silkscreen text NRST RESET PA30 SW0 LED There is one yellow LED available on the SAM4N 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 4-10. LED Connections 4.2.4. Pin on SAM4N LED PB14 Yellow LED0 Analog Reference The ADVREF is available on a 2-pin header to measure the analog reference voltage of the SAM4N device. Info:  The ADREF pin can only be used for measuring and must not be used as an input for an external voltage reference. 4.3. Embedded Debugger Implementation SAM4N Xplained Pro contains an Embedded Debugger (EDBG) that can be used to program and debug the ATSAM4N16C using Serial Wire Debug (SWD). The Embedded Debugger also include a Virtual Com Atmel SAM4N Xplained Pro [USER GUIDE] Atmel-42104B-SAM4N-Xplained-Pro_User Guide-04/2016 15 port interface over UART, an Atmel Data Gateway Interface over SPI and TWI and it monitors four of the SAM4N 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) interface use two pins to communicate with the target. For further information on how to use the programming and debugging capabilities of the EDBG, see the EDBG user guide. Table 4-11. SWD Connections 4.3.2. Pin on SAM4N Function PB7 SWD clock PB6 SWD data PB5 SWD trace output PB12 Erase Virtual COM Port The Embedded Debugger act as a Virtual Com Port gateway by using one of the ATSAM4N16C UARTs. For further information on how to use the Virtual COM port, see the EDBG user guide. Table 4-12. Virtual COM Port Connections 4.3.3. Pin on SAM4N Function PA10 UART TXD (SAM4N TX line) PA9 UART RXD (SAM4N RX line) Atmel Data Gateway Interface The Embedded Debugger features an Atmel Data Gateway Interface (DGI) by using either a USART or TWI port. The DGI can be used to send a variety of data from the SAM4N to the host PC. For further information on how to use the DGI interface, see the EDBG user guide. Table 4-13. DGI Interface Connections When Using USART Pin on SAM4N Function PC10 USART TXD (SAM4N TX line) PC9 USART RXD (SAM4N RX line) PC14 USART CLK Table 4-14. DGI Interface Connections When Using TWI Pin on SAM4N Function PB0 SDA (Data line) PB1 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 SAM4N application code. For further information on how to configure and use the GPIO monitoring features, see the EDBG user guide. Atmel SAM4N Xplained Pro [USER GUIDE] Atmel-42104B-SAM4N-Xplained-Pro_User Guide-04/2016 16 Table 4-15. GPIO Lines Connected To the EDBG Pin on SAM4N Function PC21 GPIO0 PC20 GPIO1 PC19 GPIO2 PC18 GPIO3 Atmel SAM4N Xplained Pro [USER GUIDE] Atmel-42104B-SAM4N-Xplained-Pro_User Guide-04/2016 17 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 SAM4N Xplained Pro [USER GUIDE] Atmel-42104B-SAM4N-Xplained-Pro_User Guide-04/2016 18 Figure 5-2. Select Debugger Figure 5-3. Configure Flash Loader Atmel SAM4N Xplained Pro [USER GUIDE] Atmel-42104B-SAM4N-Xplained-Pro_User Guide-04/2016 19 Figure 5-4. Configure Reset Figure 5-5. Configure Interface Atmel SAM4N Xplained Pro [USER GUIDE] Atmel-42104B-SAM4N-Xplained-Pro_User Guide-04/2016 20 6. Hardware Revision History 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 SAM4N Xplained Pro is A09-1967. 6.2. Revision 2 Revision 2 of SAM4N Xplained Pro is the initial released version. Known Issues • In backup mode, the ERASE pin will only work with a power toggle of the SAM4N. This however can't be done by the embedded debugger because there is no switch to control the power to the target. So in cases where e.g. an application is in backup mode and the user needs access in order to program/debug it is necessary to do a manual erase procedure. Workaround: – Connect ERASE test point on the bottom side of the board to VCC (3.3V) e.g. pin 4 on the PWR header. Remove power from the board and reconnect again. The device should be erased by this procedure and it is possible to program/debug via the embedded debugger. Atmel SAM4N Xplained Pro [USER GUIDE] Atmel-42104B-SAM4N-Xplained-Pro_User Guide-04/2016 21 7. Document Revision History Doc. rev. Date Comment 42104B 04/2016 Added appendix 42104A 07/2013 First release Atmel SAM4N Xplained Pro [USER GUIDE] Atmel-42104B-SAM4N-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 SAM4N Xplained Pro [USER GUIDE] Atmel-42104B-SAM4N-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-42104B-SAM4N-Xplained-Pro_User Guide-04/2016 ® ® Atmel , Atmel logo and combinations thereof, Enabling Unlimited Possibilities , and others are registered trademarks or trademarks of Atmel Corporation in U.S. and ® ® ® other countries. Windows is a registered trademarks of Microsoft Corporation in U.S. and or other countries. ARM , ARM Connected logo and others are the registered trademarks or trademarks 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. 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