Atmel ATMEGA256RFR2 Xplained Pro (USER
Contents
1. Atmel USER GUIDE Atmel ATMEGA256RFR2 Xplained Pro Preface The Atmel ATMEGA256RFR2 Xplained Pro evaluation kit is hardware platform to evaluate the ATmega256RFR2 microcontroller Supported by the Atmel Studio integrated development platform the kit provides easy access to the features of the Atmel ATmega256RFR2 and explains how to integrate the device in a customer 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 ATmega256RFR2 The Xplained Pro extension series evaluation kits offers additional peripherals to extend the features of the board and ease the development of customer designs 42079D MCU 12 2013 Atmel Table of Contents Preface uu rc tial Sa taal alin a opr ta E E us 1 1 Introd ction senese trate xe rete a n len ee 3 ki e 3 1 2 KUQQOVeINISW e ER C HERR AR EU 3 2 Getting Started 5 5 2 2 2 5 2 3 Design documentation and related links 5 3 Xplained 6 3 1 Deb gger u uu a 6 3 2 Hardware identification system ecce 6 2 9 Power SUPPLY 5 u uu sa cies qasa da2. 6 Atmel sample store _ Atmel sample store where you can order samples of devices 1 http www atmel com atmelstudio http www atmel com atmelstudio 3 http www atmel com XplainedPro ii http www atmel com Images Atmel 42079 ATMEGA256RFR2 Xplained Pro User Guide pdf 5 http www atmel com Images Atmel 42079 ATMEGA256RFR2 Xplained Pro User Guide zip http www atmel com atmelstudio i http www iar com en Products IAR Embedded Workbench AVR b http www atmel com system samplesstore Atmel Atmel ATMEGA256RFR2 Xplained Pro USER GUIDE 5 42079D MCU 12 2013 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 ATMEGA256RFR2 Xplained Pro
3. switch Skyworks Solutions Inc AS222 92LF3 connected to the unbalanced output of the balun The switch is driven by the DIG1 and DIG2 pins of the ATmega256RFR2 which feature Antenna Diversity to enable the device to automatically select the best signal from two antennas can also be selected manually The output of the switch is connected to a ceramic chip antenna Johanson Technology 2540AT18D0100 and a SMA connector for external antennas 1 http www atmel com images doc8333 pdf http www johansontechnology com datasheets balun filter 2450BM15A0015 pdf 3 http www skyworksinc com uploads documents 200252C pdf http www johansontechnology com images stories ip rf antennas Antenna_2450AT18D0100_v3 pdf Atmel Atmel ATMEGA256RFR2 Xplained Pro USER GUIDE 14 42079D MCU 12 2013 4 2 5 4 3 4 3 1 Table 4 12 RF connections RFP RF balanced output Positive RFN RF balanced output Negative Temperature sensor ATMEGA256RFR2 Xplained Pro features an Atmel AT30TSE758 temperature sensor chip with an 8kbit serial EEPROM inside The sensor includes programmable high and low temperature alarms user selectable temperature resolution up to 12 bits and an 12C SMBus compatible serial interface Table 4 13 Temperature sensor connections AT30TSE758 Pinon Comment temperature ATmega256RFR sensor pin 1 2 3 4 5 6 7 SDA PD1 Data line of serial interface SCL PDO Clock line of serial interface ALERT NC Temper
4. EXT headers GND VCC Pin on EXT4 ATmega256RFR2 pin Function Shared functionality Q N 10 20 Table 4 5 Extension header EXT5 PB5 PE5 PG0 PD1 PD0 PEO PE1 PD5 PB2 PB3 PB1 Communication line to ID chip on extension board GND OC1A EXT1 header GPIO INT5 EXT1 header GPIO SPI chip select B EXT1 header TWI SDA All other EXT headers TWI SCL All other EXT headers UARTO RXD All other EXT headers EXT2 EXT3 and EXT5 connected through cut Strap UARTO TXD All other EXT headers EXT2 EXT3 and EXT5 connected through cut strap GPIO SPI chip select A EXT1 header SPI MOSI All other EXT headers SPI MISO All other EXT headers SPI SCK All other EXT headers GND VCC Pin on EXT5 ATmega256RFR2 pin D NE Shared functionality Atmel Communication line to ID chip on extension board GND Atmel ATMEGA256RFR2 Xplained Pro USER GUIDE 12 42079D MCU 12 2013 Pin on EXT5 ATmega256RFR2 pin LEUTEN Shared functionality 4 5 6 7 8 9 PE6 10 PD4 11 PD1 12 PDO 13 PEO 14 15 PD6 16 PB2 17 PB3 18 PB1 19 20 Notes Connected through cut strap 4 1 2 Other headers GPIO INT6 GPIO SPI chip select B TWI SDA TWI SCL UARTO RXD UARTO TXD GPIO SPI chip select SPI MOSI SPI MISO SPI SCK GND VCC EXT2 header EXT2 header All other EXT headers All other EXT headers All other EXT
5. ERE papa 19 6 2 European Union u uuu u rane nummer a nha nea 19 6 3 List of Antennae tested with this product 20 7 Hardware revision history and known issues 21 7 1 Identifying Product ID and Revision 21 DAMM SUR M 21 8 Document revision history 22 9 Evaluation board kit important notice 23 Atmel ATMEGA256RFR2 Xplained Pro USER GUIDE 2 42079D MCU 12 2013 1 Introduction 1 1 Features e Atmel ATmega256RFR2 microcontroller e Embedded Debugger EDBG USB interface Programming and debugging target through JTAG Virtual COM port interface to target via UART Atmel Data Gateway Interface DGI to target via SPI or TWI Four GPIOs connected to target for code instrumentation e Digital I O Two mechanical buttons user and reset button One user LED Five extension headers e Antenna One ceramic chip antenna 2450BM15A0015E One SMA connector for external antenna e Temperature sensor and EEPROM AT30TSE758 e Two possible power sources External power Embedded debugger USB e 16MHz crystal e 32kHz crystal 1 2 Kit overview The Atmel ATMEGA256RFR2 Xplained Pro evaluation kit is a hardware platform to evaluate the Atmel ATmega256RFR2 The kit offers a set of features
6. PI MISO Master In Slave Out Table 4 17 DGI interface connections when using TWI Pin on ATmega256RFR2 mnsii Function PDO SCL Clock line PD1 SDA Data 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 ATmega256RFR2 application code For further information on how to configure and use the GPIO monitoring features see Embedded Debugger on page 6 Table 4 18 GPIO lines connected to the EDBG PE2 GPIOO PE3 GPIO1 PE5 GPIO2 PE6 GPIO3 Factory programmed data ATMEGA256RFR2 Xplained Pro has preprogrammed data in the ATmega256RFR2 s user signature data page 1 with address 0x0100 User signature data is isolated from the main flash and wil not be cleared by a chip erase command Special commands are available to read write and erase the user signature data pages through a JTAG interface and from firmware Please refer to the ATmega256RFR2 s datasheet for details on how to read the user signature data pages Atmel Atmel ATMEGA256RFR2 Xplained Pro USER GUIDE 16 42079D MCU 12 2013 The preprogrammed data in the user signature data page 1 is documented in Persistent Memory on page 18 ATMEGA256RFR2 Xplained Pro does not feature an XTAL calibration value Atmel Atmel ATMEGA256RFR2 Xplained Pro USER GUIDE 17 42079D MCU 12 2013 5 Persistent Memory A persistent memory space is al
7. 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 ATMEGA256RFR2 Xplained Pro USER GUIDE 23 42079D MCU 12 2013 Atmel Enabling Unlimited Possibilities Atmel Corporation 1600 Technology Drive San Jose CA 95110 USA T 1 408 441 0311 F 1 408 436 4200 www atmel com 2013 Atmel Corporation All rights reserved Rev 42079D MCU 12 2013 Atmel Atmel logo and combinations thereof Enabling Unlimited Possibilities amp AVR and others are registered trademarks or trademarks of Atmel Corporation or its subsidiaries Windows is a registered trademark of Microsoft Corporation in U S and or other countries Other terms and product names may be trademarks of others Disclaimer The information i
8. a sayas 7 3 3 1 Measuring ATmega256RFR2 power consumption 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 AT COMMECIONS its Rep uL er ase ERU RUE 10 4 1 1 IO extension headers 10 41 2 Other headers usa pater i pU IR 13 4 2 PeripheralS Pe cena PPAR 14 BQ Gryswlals c 14 4 2 2 Mechanical b ttons eornm 14 42 35 LED m 14 2 24 RE accent tet seca pate exe MOM uses ae aaah akay shasha 14 4 25 Temperatire Sensor ceret alls 15 4 3 Embedded Debugger implementation 15 4 3 1 STAG iicet eese a irte RE 15 4 3 2 Virtual COM portf u u er a ua PERI Ped 16 4 3 3 Atmel Data Gateway Interface 16 4 4 Factory programmed data 16 5 Persistent Memory ERES oe RR 18 6 Agency Certification rtu DEM 19 UNITED STATES EGG u z uqu ERR Eh F
9. a power LED and a status LED Table 3 1 EDBG LED control on page 6 shows how the LEDs are controlled in different operation modes Table 3 1 EDBG LED control Operation 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 0 Product Name ASCII string Segment LCD1 Xplained Pro 0 I http store atmel com 5 http www atmel com Images Atmel 42096 Microc
10. ature alarm signalling pin GND GND A2 Addres line for serial interface by default pulled low A1 Addres line for serial interface by default pulled high A0 Addres line for serial interface by default pulled high 8 VCC VCC Notes Alert pin is available on a testpoint hole close to the sensor The temperature sensor has two TWI addresses one for the temperature sensor and one for the EEPROM The addresses are 0b1001 A2 A1 AO for the temperature sensor and 0b1010 A2 A1 AO for the EEPROM The address selection lines A2 A1 and AO of the temperature sensor chip is by default pulled high for A0 and A1 and low for A2 through 100kQ resistors which makes the default addresses 0b1001011 and 0b1010011 Soldering the the straps on the front of the ATMEGA256RFR2 Xplained Pro board for An will alter that bit in the address to low or high Each strap is marked in silkscreen with AO A1 and A2 as shown in Figure 4 1 Temperature sensor TWI address on page 15 When communicating with the EEPROM part of the TWI address is used as a page address for more details see the device datasheet Figure 4 1 Temperature sensor TWI address EEPROM amp TEMPERATURE SENSOR Embedded Debugger implementation The ATMEGA256RFR2 Xplained Pro contains an Embedded Debugger EDBG that can be used to program and debug the ATmega256RFR2 using JTAG The Embedded Debugger also include a Virtual Com port interface over UART an Atmel Data Gatewa
11. contains the Atmel Embedded Debugger EDBG for on board debugging The EDBG is a composite USB device of 3 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 ATmega256RFR2 On the ATMEGA256RFR2 Xplained Pro the JTAG interface is connected between the EDBG and the ATmega256RFR2 The Virtual COM Port is connected to a UART port on the ATmega256RFR2 see section Embedded Debugger implementation on page 15 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 Please see section Embedded Debugger implementation on page 15 for available interfaces and pinout Communication over the interfaces are bidirectional It can be used to send events and values from the ATmega256RFR2 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 ATMEGA256RFR2 Xplained Pro
12. d including interference that may cause undesired operation FCC 15 19 The internal external antenna s used for this mobile transmitter must provide a separation distance of at least 20 cm from all persons and must not be colocated or operating in conjunction with any other antenna or transmitter Installers must be provided with antenna installation instructions and transmitter operating conditions for satisfying RF exposure compliance This device is approved as a mobile device with respect to RF exposure compliance and may only be marketed to OEM installers Use in portable exposure conditions FCC 2 1093 requires separate equipment authorization Important Modifications not expressly approved by this company could void the user s authority to operate this equipment FCC section 15 21 Important This equipment has been tested and found to comply with the limits for a Class A digital device 6 2 pursuant to Part 15 of the FCC Rules These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment This equipment generates uses and can radiate radio frequency energy and if not installed and used in accordance with the instruction manual may cause harmful interference to radio communications Operation of this equipment in a residential area is likely to cause harmful interference in which case the user will be required to correct the in
13. d Pro evaluation and extension kit s that s connected You ll be presented with relevant information like datasheets and kit documentation You also have the option to launch Atmel Software Framework ASF example applications The target device is programmed and debugged by the on board Embedded Debugger and no external programmer or debugger tool is needed Please refer to the Atme Studio user guide for information regarding how to compile and program the kit 2 3 Design documentation and related links The following list contains links to the most relevant documents and software for the ATMEGA256RFR2 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 ATMEGA256RFR2 Xplained Pro User Guide PDF version of this User Guide 3 ATMEGA256RFR2 Xplained Pro Design Documentation ga Package containing schematics BOM assembly drawings 3D plots layer plots etc 4 Atmel Studio Free Atmel IDE for development of C C and assembler code for Atmel microcontrollers 5 IAR Embedded Workbench for Atmel AVRG This is a commercial C C compiler that is available for 8 bit AVR There is a 30 day evaluation version as well as a 4k code size limited kick start version available from their website
14. e information in the user page might be swapped on serial numbers prior to 1885 Workaround If it is neccssary to use the CRC value to verify the data in the user page compare the calculated value with both the swapped and non swapped version of the CRC value present in the user page e All kits with a serial number lower than 0200003858 does not have any pre programmed data in the userpage Atmel Atmel ATMEGA256RFR2 Xplained Pro USER GUIDE 21 42079D MCU 12 2013 8 Document revision history Document Date Comment revision 42079D 11 2013 Added chapter about persistent memory and factory programmed data Added new errata 42079C 21 05 2013 Added list of antennaes 42079B 24 04 2013 Added section about certification 42079A 25 02 2013 First release Atmel Atmel ATMEGA256RFR2 Xplained Pro USER GUIDE 22 42079D MCU 12 2013 9 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
15. e of Antenna Antenna 1 Johanson 2450AT18D0100 1 5dBi Ceramic Antenna Technology Antenna 2 Techfun Co Ltd 01 552 OdBi External Antenna Atmel Atmel ATMEGA256RFR2 Xplained Pro USER GUIDE 20 42079D MCU 12 2013 7 Hardware revision history and known issues 7 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 digits of the serial number which is listed under kit details contain the product identifier and revision Information about connected Xplained Pro extension boards will also appear in the Atmel Kits window The same information can be found on the sticker on the bottom side of the PCB Most kits will print the identifier and revision in plain text as A09 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 r revision s serial number The kit identifier for ATMEGA256RFR2 Xplained Pro is 1784 7 2 Revision 3 Revision 3 of ATMEGA256RFR2 Xplained Pro is the initial released version e Thelow and high byte of the 16 bit CRC value of th
16. ed Pro MCU board directly Table 3 4 Xplained Pro Extension Header Pin number kssrrTa 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 PWN Pulse width modulation alternatively positive 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 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 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 heade
17. ga256RFR2 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 P3V3 plane is connected via a jumper to the main power plane VCC TARGET P3V3 and by replacing the jumper with an ampere meter it is possible to determine the current consumption To locate the current measurement header please refer to Figure 1 1 ATMEGA256RFR2 Xplained Pro evaluation kit overview on page 4 Do not power the board without having the jumper or an ampere meter mounted This can cause the ATmega256RFR2 to be powered through its I O pins and cause undefined operation of the device Standard headers and connectors Xplained Pro Standard Extension Header All Xplained Pro kits have one or more dual row 20 pin 100mil extension headers Xplained Pro MCU boards have male headers while Xplained Pro extensions have their female counterparts Note that all pins are not always connected However all the connected pins follow the defined pin out described in Table 3 4 Xplained Pro Extension Header on page 8 The extension headers can be used to connect a wide variety of Atmel Atmel ATMEGA256RFR2 Xplained Pro USER GUIDE 7 42079D MCU 12 2013 3 4 2 Atmel Xplained Pro extensions to Xplained Pro MCU boards and to access the pins of the target MCU on Xplain
18. headers EXT2 EXT3 and EXT5 connected through cut strap All other EXT headers EXT2 EXT3 and EXT5 connected through cut strap EXT2 header All other EXT headers All other EXT headers All other EXT headers In addition to the 4 extension headers on page 10 ATMEGA256RFR2 Xplained Pro has additionally two headers with spare signals which offers access to the I O of the microcontroller which are otherwise not easily available elsewhere or might be favourable to have collected toghether All headers have a pitch of 2 54mm Table 4 6 SPARE ADC signals header Pin on header ISI 1 2 PF4 3 PF5 4 PF6 5 PF7 Notes Table 4 7 SPARE signals header 2 VCC 3 3V ADC4 JTAG Interface TCK ADCS5 JTAG Interface TMS ADC6 JTAG Interface TDO Interface TDI These lines are connected to the JTAG interface and ADC will not work properly while debugging or programming the kit Shared functionality mo DIENEN Shared functionality Analog reference 2 TST 3 RSTN RSTON CLKI Atmel Test pin for RF test mode Reset EDBG and RESET button Reset status Alternative clock input main Atmel ATMEGA256RFR2 Xplained Pro USER GUIDE 42079D MCU 12 2013 13 ATmega256RFR2 Shared functionality pin 6 GND on header 4 2 Peripherals 4 2 1 Crystals The ATMEGA256RFR2 Xplained Pro kit contains two crystals that can be used as cloc
19. ined Pro headers EXT1 EXT2 EXT3 EXTA and EXT5 offers access to the I O of the microcontroller in order to expand the board e g by connecting extension modules to the board These headers all comply with the standard extension header specified in Xplained Pro Standard Extension Header on page 7 All headers have a pitch of 2 54 mm Table 4 1 Extension header EXT1 Pin on EXT1 ATmega256RFR2 pin EW Shared functionality E 3 PFO 4 PF1 5 PE2 6 PE3 7 PBS 8 PB6 9 PE5 10 PD5 11 PD1 12 PDO 13 PEO 14 PE1 15 PGO 16 PB2 17 PB3 18 PB1 19 20 Table 4 2 Extension header EXT2 Communication line to ID chip on extension board GND ADCO ADC1 GPIO GPIO OC1B GPIO INT5 GPIO SPI chip select B TWI SDA TWI SCL UARTO RXD UARTO TXD GPIO SPI chip select A SPI MOSI SPI MISO SPI SCK GND VCC EXTA header EXTA header EXTA header All EXT headers All EXT headers All EXT headers EXT2 EXT3 and EXT5 connected through cut strap All EXT headers EXT2 EXT3 and EXT5 connected through cut strap EXTA header All EXT headers All EXT headers All EXT headers Pin on EXT2 ATmega256RFR2 pin Function i Shared functionality Atmel Communication line to ID chip on extension board GND Atmel ATMEGA256RFR2 Xplained Pro USER GUIDE 10 42079D MCU 12 2013 Pin on EXT2 ATmega256RFR2 pin Function Shared functionality 0 Oo 20 Note
20. k sources for the ATmega256RFR2 device Each crystal has a cut strap next to it that can be used to measure the oscillator allowance 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 Table 4 8 External 32 768kHz crystals usv PG3 5 2 crystal output PG4 TOSC1 crystal input Table 4 9 External 16MHz crystals LIII R XTAL1 Crystal input XTAL2 Crystal output 4 2 2 Mechanical buttons ATMEGA256RFR2 Xplained Pro contains two mechanical buttons One button is the RESET button connected to the ATmega256RFR2 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 10 Mechanical buttons Pin on ATmega256RFR2 Silkscreen text RSTN RESET PE4 Swo 42 3 LED There is one yellow LED available on the ATMEGA256RFR2 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 11 LED connections Pin on ATmega256RFR2 LED PB4 Yellow LED 4 2 4 RF The main feature of ATMEGA256RFR2 Xplained Pro is to show the RF capability of the ATmega256RFR2 device This device has bidirectional differential antenna pins which are fed through a balun Johanson Technology 2450BM15A00152 to create a single unbalanced output input This kit has a passive analog RF
21. life
22. located to store product specific information The organization of the persistent memory is as follows Table 5 1 Persistent Memory Structure Revision uint 16 2 bytes MAC address uint 64 8 bytes Board information PCBA Name ASCII string 30 bytes Board information PCBA Serial number ASCII string 10 bytes Board information PCBA Atmel Part Number ASCII string 8 bytes Board information PCBA Revision uint 8 1 byte Reserved 3 bytes XTAL Calibration Value uint 8 1 byte Reserved 7 bytes Reserved 4 bytes CRC uint 16 2 bytes Notes NO terminated ASCII string The MAC address stored inside the MCU is a uniquely assigned ID for each kit and is owned by Atmel User applications can use this unique MAC ID to address the kit Atmel Atmel ATMEGA256RFR2 Xplained Pro USER GUIDE 18 42079D MCU 12 2013 6 1 Agency Certification UNITED STATES FCC This equipment complies with Part 15 of the FCC rules and regulations To fulfill FCC Certification requirements an OEM manufacturer must comply with the following regulations 1 This equipment ATMEGA256RFR2 Xplained Pro is for use for evaluation purposes only and must not be incorporated into any other device or system Important This equipment complies with Part 15 of the FCC Rules Operation is subject to the following two conditions 1 this device may not cause harmful interference and 2 this device must accept any interference receive
23. n 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
24. ontrollers Embedded Debugger User Guide pdf Atmel Atmel ATMEGA256RFR2 Xplained Pro USER GUIDE 6 42079D MCU 12 2013 3 3 3 3 1 Warning 3 4 3 4 1 Data Field Data Type Example Content Product Revision ASCII string 02 0 Product Serial Number ASCII string 1774020200000010 0 Minimum Voltage mV uint6 t 3000 Maximum Voltage mV uint16 t 3600 Maximum Current mA uint16 t 30 Power supply The ATMEGA256RFR2 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 ATMEGA256RFR2 Xplained Pro on page 7 Table 3 3 Power sources for ATMEGA256RFR2 Xplained Pro Voltage requirements Current requirements marking External power 4 3V to 5 5V Recommended minimum is 500mA to be able to provide enough current for extentions and the board itself Recommended maximum is 2A due to the input protection maximum current specification Embedded debugger 4 4V to 5 25V 500 mA according to DEBUG USB 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 following priority 1 External power 2 Embedded debugger USB Measuring ATmega256RFR2 power consumption As part of an evaluation of the ATme
25. r The power header can be used to connect external power to the ATMEGA256RFR2 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 please refer to Figure 1 1 ATMEGA256RFR2 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 4 VCC P3V3 Regulated 3 3V output used as main power for the kit Atmel ATMEGA256RFR2 Xplained Pro USER GUIDE 8 42079D MCU 12 2013 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 ATMEGA256RFR2 Xplained Pro USER GUIDE 9 42079D MCU 12 2013 4 1 Hardware user guide Connectors This chapter describes the implementation of the relevant connectors and headers on ATMEGA256RFR2 Xplained Pro and their connection to the ATmega256RFR2 The tables of connections in this chapter also describes which signals are shared between the headers and on board functionality I O extension headers The ATMEGA256RFR2 Xpla
26. s PE6 PD6 PD1 PD0 PE0 PE1 PD4 PB2 PB3 PB1 1Connected through cut strap Table 4 3 Extension header EXT3 Pin on EXT3 ATmega256RFR2 pin Function Shared functionality 1 0 Atmel PF3 PG5 PB7 PE7 PD7 PD1 PDO PE0 PE1 GPIO INT6 EXT5 header GPIO SPI chip select B 5 header TWI SDA All other EXT headers TWI SCL All other EXT headers UARTO RXD All other EXT headers EXT2 EXT3 and EXT5 connected through cut strap UARTO TXD All other EXT headers EXT2 EXT3 and EXT5 connected through cut strap GPIO SPI chip select A EXT5 header SPI MOSI All other EXT headers SPI MISO All other EXT headers SPI SCK All other EXT headers GND VCC Communication line to ID chip on extension board GND GPIO GPIO GPIO GPIO INT7 GPIO SPI chip select B TWI SDA All other EXT headers TWI SCL All other EXT headers UART0 RXD All other EXT headers EXT2 EXT3 and EXT5 connected through cut strap UARTO TXD All other EXT headers EXT2 EXT3 and EXT5 Atmel ATMEGA256RFR2 Xplained Pro USER GUIDE 11 42079D MCU 12 2013 Pin on EXT3 ATmega256RFR2 pin Function Shared functionality 20 Notes Table 4 4 Extension header EXT4 PG4 PB2 PB3 PB1 Connected through connected through cut strap GPIO SPI chip select A SPI MOSI All other EXT headers SPI MISO All other EXT headers SPI SCK All other
27. terference at his own expense FCC section 15 105 European Union ETSI The ATMEGA256RFR2 Xplained Pro Evaluation kits has been certified for use in European Union countries A Declaration of Conformity must be issued for each of these standards kept on file as described in Annex II of the R amp TTE Directive Furthermore the manufacturer must maintain a copy of the modules documentation and ensure the final product does not exceed the specified power ratings antenna specifications and or installation requirements as specified in the user manual If any of these specifications are exceeded in the final product a submission must be made to a notified body for compliance testing to all required standards Atmel Atmel ATMEGA256RFR2 Xplained Pro USER GUIDE 19 42079D MCU 12 2013 Important The CE marking must be affixed to a visible location on the OEM product The CE mark shall consist of the initials CE taking the following form e The CE marking must have a height of at least 5mm except where this is not possible on account of the nature of the apparatus The CE marking must be affixed visibly legibly and indelibly More detailed information about CE marking requirements you can find at DIRECTIVE 1999 5 EC OF THE EUROPEAN PARLIAMENT AND OF THE COUNCIL on 9 March 1999 at section 12 6 3 List of Antennae tested with this product Table 6 1 List of tested Antennae Antenna Number Make Model Part Typ
28. that enables the ATmega256RFR2 user to get started using the ATmega256RFR2 peripherals right away and to get an understanding of how to integrate the device in their own design Atmel Atmel ATMEGA256RFR2 Xplained Pro USER GUIDE 3 42079D MCU 12 2013 Figure 1 1 ATMEGA256RFR2 Xplained Pro evaluation kit overview CURRENT MEASUREMENT HEADER USER LEDO SPARE ADC SIGNALS CHIP ANTENNA 16MHz CRYSTAL BALUN RF SWITCH 32kHz CRYSTAL EXT ANTENNA CONNECTOR TEMPERATURE SENSOR amp EEPROM Atmel SWO0 USER BUTTON RESET BUTTON EXT3 HEADER DEBUG USB PWR CONNECTOR EXT1 HEADER EXT4 HEADER ATMEGA256RFR2 t MWM MSM 2 SPARE SIGNALS EXT2 HEADER EXT5 HEADER meal f K t ples Atmel ATMEGA256RFR2 Xplained Pro USER GUIDE 4 42079D MCU 12 2013 2 Getting started 2 1 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 USB micro B cable to the DEBUG USB port 2 2 Connecting the kit When connecting Atmel ATMEGA256RFR2 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 amp Windows amp XP and Windows 7 Once connected the green power LED will be lit and Atmel Studio will autodetect which Xplaine
29. y Interface over SPI and TWI and it monitors four of the ATmega256RFR2 GPIOs Atmel Studio can be used as a front end for the Embedded Debugger JTAG The JTAG use five 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 E http www atmel com Images doc8751 pdf Atmel Atmel ATMEGA256RFR2 Xplained Pro USER GUIDE 15 42079D MCU 12 2013 4 3 2 4 3 3 4 4 Table 4 14 JTAG connections PF4 JTAG TCK PF5 JTAG TMS PF6 JTAG TDO PF7 JTAG TDI RSTN RESET Virtual COM port The Embedded Debugger act as a Virtual Com Port gateway by using one of the ATmega256RFR2 UARTS For further information on how to use the Virtual COM port see Embedded Debugger on page 6 Table 4 15 Virtual COM port connections kr Function PD2 UART RXD ATmega256RFR2 RX line PD3 UART TXD ATmega256RFR2 TX line Atmel Data Gateway Interface The Embedded Debugger features an Atmel Data Gateway Interface DGI by using either a SPI or TWI port The DGI can be used to send a variety of data from the ATmega256RFR2 to the host PC For further information on how to use the DGI interface see Embedded Debugger on page 6 Table 4 16 DGI interface connections when using SPI Pin on ATmega256RFR2 PBO Slave select ATmega256RFR2 is Master PB1 SPI SCK Clock Out PB2 SPI MOSI Master Out Slave in PB3 S
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