AVR2037: RCB Key Remote Control
Contents
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3. 6V see the absolute maximum ratings in Table 5 1 Figure 4 2 shows an external power supply connected to X1 on pin 6 and pin 5 Figure 4 2 X1 external power connection y 6 a j 20A DI 4 2 1 Supply current measurement The supply current of the RCB and KeyRemote can be measured independently of each other The current consumption of the RCB is measured by removing the jumper bridge at X1 pin2 4 and connecting a DC current meter in its place Also the batteries should be removed and the power switch on the RCB needs to be switched off An external power source needs to be connected to pin 6 and pin 5 This can be a lab power supply a regulated DC wall plug supply or an external battery see the recommended operating range in Table 5 2 4 AVR2037 8356A AVR 02 1 1 4 3 Interfaces 4 3 1 Programming interface 8356A AVR O2 11 AVR2037 Figure 4 3 RCB supply current measurement Lab Supply 2 7 3 6V mA X1 OFF KeyRemote RCB The current consumption of the KeyRemote peripherals can be measured by removing the jumper bridge at X1 pin2 4 and connecting a DC current meter in its place In this measurement the batteries from the RCB will supply the KeyRemote with power Figure 4 4 KeyRemote supply current measurement mA ON KeyRemote To enable software development and flash programming an AVR JTAGICE mkll can be connected directly to X2 Although t
4. TMS Wad 00V asgo T m enjq ueoub YMd t IS Tal aou A 1dd MSA A neq 3 a qeza A DIER A 1019 e 10129 A OW SN PW N T IN 8 L 9 s r 6 z I 13 IMEL F ci 8356A AVR O2 11 Te AIMEL A 2 Assembly drawing 8356A AVR 02 1 1 Met eiee a pon 8 bi x 6 ei O alaa lalala ZIJ 2 ui li Os d l CH Ku 9 D 2 AVR2037 14 AVR2037 A 3 Bill of materials Table A 1 Bill of materials Qty Description C1 Capacitor C2 C3 C18 Capacitor C4 C5 C6 Capacitor C7 C8 C9 C10 C11 C21 Capacitor Manufacturer Manufacturer 100nF 2 2uF 25V DisplayTech LCD 32128A TFM 115 02 S TFM 115 02 S D D LC Samtec LC TLMT3100 Vishay TLMT3100 Rubber feet 100Q 3300 30kQ 10kQ 47kQ REF1TOP REF2TOP 0603H0 8 0402A 0402A 0402A C12 C13 C14 C15 C16 C17 C19 C20 Capacitor 1 DIS1 Key head round black 0805 32128A FA BW 2 EXTO EXT 1 Header 15x2 pol LED1 LED2 TFM 115 02 LED3 LED4 LEDS LED red LED6 LED IR M1 M2 Key head round red Key head round green M4 o Key head round yellow 3 M4 5 Key head round blue M6 1 7 LED PLCC 2 SFH425 ME o Key head round black M7 M8 M9 Rubber feet M10 10x3 5mm clear R2 R3 R4 R5 R6 Resistor 0603
5. 4CE SP100 WirelessHART and ISM Applications Datasheet Rev C 02 10 Atmel Corporation Atmel ATmega1281V 8 bit Microcontroller with 64K 128K 256K Bytes In System Programmable Flash Datasheet Rev M 09 10 Atmel Corporation Atmel AVR2044 RCB128RFA1 Hardware User Manual Schematic Drawing Layout Drawing Atmel Corporation MAXIM MAX3221ECAE 15kV ESD Protected 1uA 3 0V to 5 5V 250kbps RS 232 Transceivers with AutoShutdown Datasheet Rev 6 9 05 MAXIM Semiconductor 7 Displaytech 32128A LCD module Datasheet Rev 1 0 3 06 Displaytech Ltd 8 Sitronix ST7565V 65 x 132 Dot Matrix LCD Controller Driver Datasheet Ver 1 5b 2009 09 14 9 Analog Devices ADXL335 Small Low Power 3 Axis 3G Accelerometer Datasheet Rev B 1 10 2 3 Ll 4 Lessel 5 Lessel 6 18 AVR2037 8356A AVR 02 1 1 7 Table of contents 8356A AVR O2 11 AVR2037 e 1 ee LOT E 1 SEENEN 2 I OVO E 2 d FCTIDNCV Al DIOC S sasadan w kl l t e n e ei t 3 41 ER GB ln le 3 A2 WOW TT e e TEE 3 4 2 1 Supply Current measurement tat aaa aaaeoaeeoooeeoooseooooeoooueoooooeosooooooo 4 43 MQM e 9 4 3 1 Programming Interface E 5 72 pag RRE 6 A Sid R9232 IMEN EE 6 4 3 4 128 x ee ee TE EE 7 lee 8 e GEELEN 10 AOR kI EI SA EE 10 5 Electrical CharacteriStiCS rrerronansonannnnannnnannnnannonannnnannonaanonannnnannnnan 11 5 1 Absolute MAXIMUM ratings l tt tata anae ea taaa aa taaaattaaeatanaestas
6. H0 4 0402A 0603H0 4 0402A R9 R10 R11 R12 R13 R14 R17 R18 Resistor R15 Resistor 2 RF1 RF2 SWI SW2 SW3 SW4 0402A 0603H0 4 0603H0 4 REF1TOP REF2TOP SWITCH 1 POL SW5 SW6 Switch DTSMG44R APEM GW Farmnell177 807 _4PIN AIMEL 15 5 8356A AVR O2 11 AIMEL E SW9 SW10 SW11 SW12 SW13 SW14 SW15 SW16 SW17 SW18 SW19 SW20 SW21 SW22 SW23 SW24 Switch SW_Farnell177 807 4 1437565 1 Tyco _4PIN TP1 TP2 TP3 TP4 Solder test point TP 05 L OESE Analog U1 LFCSP 16 ADXL335BCPZ Devices ADXL335 RS 232 receiver auto U2 shutdown SSOP 16 0 65 MAX3221ECAE OCTAL D TYPE TRANSPARENT LCH 3SO TSSOP 20 74LVC573APW Philips 74LVC573 TSM105_2x5pin TSM105 01 L Header 5x2 pol _an DH Samtec HEADER 5X2 HD FFC FPCO 50 Header 28 pol _28pol 52435 2872 Molex HEADER 28 SWITCH 1 POL 16 AVR2037 8356A AVR 02 1 1 AVR2037 EVALUATION BOARD KIT IMPORTANT NOTICE 8356A AVR 02 1 1 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 A
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8. S 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 users 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 2325 Orchard Parkway San Jose CA 95131 Copyright 2009 Atmel Corporation AMEL L AIMEL Te References 1 Atmel ATmega128RFA 1 8 bit Microcontroller with Low Power 2 4GHz Transceiver for ZigBee and IEEE 802 15 4 Datasheet Rev A 12 09 Atmel Corporation Atmel AT86RF231 Low Power 2 4 GHz Transceiver for ZigBee IEEE 802 15 4 GLOWPAN RF4CE SP100 WirelessHART and ISM Applications Datasheet Rev C 09 09 Atmel Corporation Atmel AT86RF212 Low Power 2 4 GHz Transceiver for ZigBee IEEE 802 15 4 GLOWPAN RF
9. are and software solutions for remote control applications In combination with one of the various RCBs the KeyRemote contains all the functional blocks that might be used in state of the art remote controls Programming and debugging interfaces are provided to support application development While the KeyRemote primarily provides the user interface hardware an appropriate RCB see Table 3 1 must be included to provide the microcontroller and radio transceiver functionality Table 3 1 RCB configurations RCB128FA1 2 4GHz Atmel ATmega128RFA 1 single chip solution 1 RCB231 2 4GHZ Atmel AT86RF231 2 with Atmel ATmega1281V 4 RCB212SMA 868 915MHZ Atmel AT86RF212 3 with Atmel ATmega1281V 4 Figure 3 1 KeyRemote with RCB128RFA1 Atmel AVR JTAGICE mkll and serial adaptor cable 8356A AVR 02 1 1 AVR2037 4 Peripheral blocks The following sections describe the different peripheral blocks of the KeyRemote and how to configure and use each peripheral accordingly 4 1 RCB interface In order to operate the KeyRemote an appropriate RCB must be selected and mounted on the KeyRemote board The differences between the RCBs are related to port allocations the single chip Atmel ATmega128RFA1 solution does not provide access to ports A and C and the Atmel ATmega1281V based dual chip solutions already use port B to control the radio transceiver Single chip and dual chip boards have a different port signal routing whi
10. as well as to influence the system A Maxim MAX3221ECAE is used to shift the low level logic signals to the high signal levels needed to interface properly to a PC To enable the RS232 interface DATA6 needs to be properly configured so the U3 latch device can set bit7 FEN 232 to logic low See Table 4 1 and the KeyRemote schematic for detailed information If the interface is not required it is recommended to disable the line driver to reduce power consumption 8356A AVR 02 1 1 AVR2037 Figure 4 6 KeyRemote with RS232 cable connected WAS LL fl Hh eels oa inan si 1 H A E Ba kn ek d 8 A r fade EL W ie a kwi amp Automated power consumption is achieved using the line driver auto shutoff This function enables the driver only when a valid RS232 level is detected As long as the board is not connected to a host the line driver is automatically disabled For further information on the Maxim MAX3221ECAE refer to the datasheet 6 The connection to a PC COM port with DB9 connector can be done as documented in the Figure 4 7 Figure 4 7 RS232 cable KeyRemote X1 RS232 SUB D9 DTE DTE 9 RxD Input 7 TxD Output 5 GND brown wire 4 3 4 128 x 32 graphic display The onboard display is a COG type with built in controller and display memory It accessed only when it is necessary to change the content of the display The controller has a high performance parallel interconnect to the microc
11. ch is already supported in the software provided Table 4 1 describes these RCB differences Table 4 1 Signaling with different RCBs KeyRemote signal RCB with ATmega1281V RCB with ATmega128RFA1 DATAO 7 PORTAO 7 PORTBO 7 Data bus used for the display the U3 extension port and the key matrix LEDP_SEL U3 works transparently when high and keeps data information after being switched to low level LCD CS1 bon PB Low to enable the LCD IR transmitter PB7 direct from ATmega1281V PB7 through U3 Same pin PORTB7 but R15 and R16 R15 has to be assembled Remove R15 and assemble the have to be assembled in the correct default when delivered same part at R16 way 4 2 Power supply The KeyRemote and RCB hardware are both powered by the batteries on the RCB The power supply switch on the RCB is used to connect or disconnect the battery power supply voltage In order to use the battery supply a jumper bridge must be connected at X1 between pin 2 and pin 4 as shown in Figure 4 1 Figure 4 1 X1 battery jumper 8356A AVR 02 1 1 AIMEL a lf battery operation is not desired during software development and debug sessions for example the setup can also be powered from a lab supply or a regulated DC wall plug transformer Before an external power supply is used however the batteries on the RCB should be removed or the power switch must be placed in the off position Be sure the external power supply never exceeds 3
12. e Loop eg repeat scan AIMEL until value is stable E AVR2037 4 5 Acceleration sensor 4 6 IR transmitter AVR2037 AIMEL a In addition to the interfaces described above the KeyRemote integrates an analog acceleration sensor U1 9 This type of sensor can be used for pointing at menu driven screens or to recognize gestures Due to gravitational acceleration the system can easily determine how a user holds or moves the device The orientation of the three axes is illustrated on the PCB see Figure 4 9 The analog outputs are connected to the analog to digital converter ADC of the RCB microcontroller Xout is connected to PFO ADCO Yout is connected to PF1 ADC1 Zout is connected to PF2 ADC2 For zero G the sensor output equals half the supply voltage A resistor network divides the voltages within the RCB controller measurement range Since the sensor output values depend on the supply voltage a fourth channel is implemented to measure the sensor supply to correct for supply voltage variations The voltage divider implements a 25 decrease and is connected to PF3 ADC3 of the microcontroller The resistor network also implements capacitors to set the acceleration sensor bandwidth Depending on the application scenario the sensor bandwidth can be adjusted by setting the capacitor values To enable low power applications the sensor can be powered down with the controlling signal ACC_PWR It co
13. eotasaeosaseosrosooroooe 11 5 2 Recommended operating rangde etat atataattaaaataaaeatasaerasaessaneosronoosonoe 11 El ET E 12 Appendix A PCB design data erreesreeessensssensasonaananannnnaannnannnnannn 13 e DEMON NA TEE 13 AZ ASSEMDIY GFAWING ei a it ki naja koka na ko ak a ana ka ak ia kask SEKAR ea kk ak kk 14 Pe MOM NA L E 15 EVALUATION BOARD KIT IMPORTANT NOTICE 1 c2sccccnserenneees 17 FACHE FOTO OS izi tr ea a a da al a n ok n a e e e a n A e ek e a e 18 7 Table of ET 19 AMEL e T ui Atmel Corporation Atmel Asia Limited Atmel Munich GmbH Atmel Japan 2325 Orchard Parkway Unit 01 5 8 16 19F Business Campus 9F Tonetsu Shinkawa Bldg San Jose CA 95131 BEA Tower Milennium City 5 Parkring 4 1 24 8 Shinkawa USA 418 Kwun Tong Road D 85748 Garching b Munich Chou ku Tokyo 104 0033 Tel 1 408 441 0311 Kwun Tong Kowloon GERMANY JAPAN Fax 1 408 487 2600 HONG KONG Tel 49 89 31970 0 Tel 81 3523 3551 www atmel com Tel 852 2245 6100 Fax 49 89 3194621 Fax 81 3523 7581 Fax 852 2722 1369 2011 Atmel Corporation All rights reserved Rev CORPOXXXX Atmel Atmel logo and combinations thereof AVR AVR logo and others are registered trademarks of Atmel Corporation or its subsidiaries 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 otherw
14. he mechanical construction makes it difficult to connect the ICE incorrectly be sure to locate the pin 1 marking to avoid any hardware damage Programming and debugging requires a KeyRemote with an appropriate supply voltage either from the RCB battery or directly via X1 see Section 4 2 page 3 The AVR JTAGICE mkll interface is provided to program the microcontroller located on the RCB as the KeyRemote does not provide its own microcontroller ATMEL s 4 3 2 LEDs 4 3 3 RS232 interface 6 AVR2037 AIMEL eT Figure 4 5 KeyRemote with AVR JTAGICE mkll connected The five LEDs are controlled by data latch U3 and are controlled simultaneously The state of each LED has to be applied to its corresponding data line DATAO DATA4 A short high pulse minimum 3 2ns applied by the microcontroller on signal LEDP_SEL stores the new state in the latch Start this process by applying a new state to data lines DATAO DATA4 first and then pull the LEDP_SEL signal high and low This signaling cycle avoids spikes on the other lines The U3 register state can t be read directly by the microcontroller Instead the software must maintain a variable that mirrors the state of U3 When one LED state is updated it may be necessary to ensure the signals for the other four LEDs are not changed During software development the RS232 interface can be a valuable back door the developer may use to transmit status and debug messages
15. ise 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 product descriptions at any time without notice Atmel does not make any commitment to update the information contained herein Unless specifically provided otherwise Atmel products are not suitable for and shall not be used in automotive applications Atmel products are not intended authorized or warranted for use as components in applications intended to support or sustain life 8356A AVR O2 11
16. nded to have the KeyRemote in SLEEP mode to reduce power consumption as long as no activity is required However key activity recognition has to be ensured to wake up the KeyRemote if needed To prepare the system for SLEEP and to ensure key recognition follow the steps below 1 Disable hardware not required RS232 acceleration sensor display etc to reduce power consumption during SLEEP mode 2 Set LEDP SEL to low DATA lines are now used for key recognition 3 Set DDRD1 2 3 to input 4 Set PORTD1 2 3 high to activate the internal pull up resistors The pull up resistors will keep the signal level at these pins high until a key is pressed 5 Configure lines DATAO DATAG and PORTDS 7 as outputs and set each to low level The low on the column lines will pull the row line down as soon as a key is pressed 6 Enable the low level interrupt for PORTD1 2 3 7 Enter sleep mode After doing this and once a key is pressed later on the system will wake up The software performs a scan routine as shown in Figure 4 8 to process the key entry 8356A AVR O2 11 8356A AVR O2 11 Figure 4 8 Key scan algorithm X No Set row and column lines to input and activate the internal pull up resistor X 1 Y Set row X to output and drive low Test if 1 of the columns returns low on read Determine Key Based on X and Y value ebounc
17. ontroller on the RCB Table 4 2 shows the port assignment between display and microcontroller for different types of RCBs AIMEL 7 5 8356A AVR O2 11 AMEL Table 4 2 Display signaling with different RCBs Display signal RCB with ATmega1281V RCB with ATmega128RFA1 DATAO 7 PORTAO 7 PORTBO 7 LCD CS1 PORTGO PORTE4 SELECT LCD RES PORTE2 PORTE2 RESET LCD AO PORTE3 PORTE3 Data control LCD_R W PORTE6 PORTE6 WR signal LCD_E PORTE7 PORTE7 RD signal 4 4 Key matrix 8 AVR2037 For further information refer to the example source code and the manufacturer data sheets for the display 7 and the display internal controller 8 For best quality display operation it is required to arbitrate the hardware operation in between the display access and the key input When more than one key is pressed at the same time bus contention may occur The software has to make sure that information is written to the display only when the keys are up or when only one key is pressed To achieve this the key interrupt should be enabled during display access The board features 25 keys configured as a 3 row 9 column matrix The three rows are connected to RCBPORTD1 2 3 These lines have full wake up capabilities for the controller The columns make use of data lines DATAO DATA6 and PORTD5 7 These signals have an alternate function to control additional hardware on the KeyRemote board see sections 4 3 2 and 4 3 4 lt is recomme
18. rresponds to bit 6 DATAS5 of latch U3 Please refer to Section 4 3 for details on how to set these control lines The KeyRemote features a 950nm infrared transmitter IR LED on top of the PCB LED6 This is the standard operating infrared wavelength used in remote controls for electronic devices or appliances To enable the IR LED a jumper has to be placed at connector X1 to short pins 8 and 10 The IR LED is connected to controller port PB7 This port has to be used because it is the output compare modulator output Please refer to the AVR datasheet for more information lf using the KeyRemote assembled with the RCB128RFA1 5 featuring the single chip ATmega128RFA1 latch U3 has to be configured for transparent mode by setting LEDP_SEL to high level 8356A AVR 02 1 1 AVR2037 For operation with ATmega1281V based RCBs the resistor assembled on R15 must be removed and mounted as R16 By doing this the IR LED is driven directly from the ATmega1281V pin 5 Electrical characteristics 5 1 Absolute maximum ratings Stresses beyond those listed under absolute maximum ratings see Table 5 1 may cause permanent damage to the board This is a stress rating only and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of this manual are not implied Exposure to absolute maximum rating conditions for extended periods may affect device reliability For more details abo
19. ut these parameters refer to individual datasheets of the components used Table 5 1 Absolute maximum ratings 5 2 Recommended operating range Table 5 2 Recommended operating range AIMEL 11 5 8356A AVR O2 11 6 Abbreviations AVR2037 ADC COG LED PCB RCB AIMEL Te Analog to digital converter Chip on glass Infra Red Light Emitting Diode Printed Circuit Board Radio Controller Board 8356A AVR 02 1 1 AVR2037 Appendix A PCB design data A 1 Schematic 8 L 9 s r T I DOKI PITA JOUBYASZNNASBUMIS pue syusUMd0q D Eti 1 Jo peays 0107 8 T1 eq anoa anoa OO AND SISSI z 0971 607 GC uQ01 ELSOA TL aas 0 asind H IVARI UF YLVA Se pasn QLYOd L 9 1Ad Cy UOISIADY JoqunN 2715 zo ae 5 ar spaeoq SN PM Anpiquedwoo Joy A9 U 1 09d 18 swodde speuBis rd E o Bn TAS daa papeopun Uat 7 1 TV LX SI8SI TITA IWY JON 07 gt rF IVARISZI Aq pammbar se papeopun Uat ATAV oO ML s oo MS TIZ TETADA W dnuau soAtosues odd ON oL a L vva WATO Joj md LL 9ad TET NIH AN oe LINE XXTAA 10 JOJ atoosuery rad SISSIT anoa AMd DDV D L sSviva speuStg posnun CH aa os as ri SL l v ap 2 tviva SIN AST ANT Z AST ANT T DE SEB TTAIAOd Sta kay S anoa RIZ oz az L viva LI9 S TAd sjeusis MI AOT SISSI 8cATAVAH ASC ANTT a SC viva 1 0 21304 LAVA CH Si 612 z OvIVA LISALAOd SMOAASZ LIN E en sjeusis JIAOJ IIV g TA L
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