XLP 16-Bit Development Kit User's Guide
Contents
1. lt eaz1 DS H47TOId egen O 0 zo Om o id A so pales zi ST WMd O D WMd Ozeacea Ns VS u NA env Oow rea ravza vo 0 OLY Dik SNOLLNG HONOL dv CZ ey aug aa aug ad Ex x See Qazn nl 95005 ay 00sos Oly ST SE 13 asos 1980 DES was esol 0950 sl _ E 288 0 gt isa 7 1980 Nan ves uen dis To uw a ab OHNA Ce m di ONY une eH SNV DI GE ES En va 094 e M ll dv9 310H NYHL oa dan p Old GOA gr inner TON n d idez C on t o I sn che Sen Re 194205 AXXIVZO ONY Nan 64 10012413 dn Lex qug da Q02 8ZLINIOS any vd Old GGA vL 99d SL sen SH l god vL 919 UNDO bojouy Ee 18H 311 99 pea ter a Jos Zr B84 rer 0980 zi os ao EJ ci i vas ass rau 19808 Gs S o Aen E 0950 0950 i E a a yuno C 5 ove ac PPAS 1050 1950 z ES DI z las L sh z d d s IS 8 8 RE Ce 7 MOS zzgl Col SNY 7 1 ZHAZE SI y NIGATH zem zeus YLO UMd z Gn 09s0s d 19808 oas ee oke xuzn i m e Y ran zl egi xizn T NidQ LUH EEN a Sta Ware LNY z 4M 9 Et Zz S oval ONY z 5019 29d cca eA S E r wz PPA A HIONTT WIN rd viva aod S g HE ar n ZT Aa Tg 1X130H LA YIXINOH ANO E A gi an 133908 Nid 82 MKAZO can 5557731 zung 310A i 19 09s0 IBI 1950 yr 5 ald aan 1039940 4591 091 2009 Microchip Technology Inc DS51873A page2. g adA PISIYS S v 0 E 099d lee n E sngA punouc Bojeuy L a ININ asn uasa Ch DI sa a Y A cem punoio Ewa L 9dl Gdl tdl ETA E y asoera za a ST DILUDJ3D 10 LUN DIJUDJ re ML vo v avan zezs qug GGA gt 977 jets plo cepas teu Es a NV LOIS aaa 00A TT 9535 iva lg YAN3Z 30010 8 qug aon 9 ecc 5 i E palemdod 10N cx A 9a a aus a04 oggy SETTE E A qus 00A Tar l gy l peyejndod jon bh Old GGA oid aan 8734 6234 1 GZ 00A WHO WHO SZ W WHO 00 WHO OZLAS E WHO 0Sv NHO Oslo g 678 eze om Epea 319 uMd senjeA ajeudosdde 10 ajqe 998 odd NL 126231 LEH l 5 EN TT I a 5 e S Sid E angi Jis SE he y z TT OT YANGA SIO Leo qua 00A LS d T 09341 E Old oig s 1 NE E 3 ino 7 god P Ghd zeoz a H ZXVVV 9 F SLA 0534A EIER Z zt Old GOA 10 D ous adi a 6d pig DU 1S3AYWH DS ad X Lid 094 5 as S id Wy Z D 3 EN Z dod 1S3 HVH z 318 Hoa add T er vir LINDYID HOLIMS 33MOd Lal O 2009 Microchip Technology Inc DS51873A page 32 Development Kit Schematics FIGURE A 4 DEVELOPMENT BOARD SCHEMATIC SHEET 4 UN
3. Adjustable LDO regulator PIC24F on chip regulator configuration switch and circuitry IC power select jumpers 9 PIC24F Master Clear switch 10 Capacitive touch pads 11 User defined push buttons 12 Potentiometer 13 User defined LEDs 14 Serial EEPROM 15 Temperature sensors 16 Capacitive measurement point 17 USB interface USB UART transceiver PIC18F oscillator and USB port 18 Unpopulated RS 232 options area 19 Programming interfaces a MPLAB ICD 2 6 wire interface RJ 11 socket and separate PIC18 ICSP header b PICkit programmer 6 pin interface 20 Modular 28 pin riser interface for daughter boards 21 Prototype area with supply voltage and PCT signal access 22 Current measurement jumpers and access point A more detailed discussion of each feature and its configuration is provided in Section Chapter 3 KLP 16 Bit Development Board Hardware Jo a P DS51873A page 12 2009 Microchip Technology Inc Introduction to the XLP 16 Bit Board FIGURE 1 1 XLP 16 BIT BOARD COMPONENT LAYOUT O a o 9 O 0000000 O0000j0 000000000000000 00000000000 00000000000000 OF O000000Q000000000 00000 LB a rs e POWER SOURCE mu Ey L H R iy 10 001 E on SE Pawa E e tae E Tog Qe OOOOOO 0000000 000000000000000 000000000000000 BE oi 000000 000000 N 0000000000 S L A OO 000000 TN D O O O O O O O O O O i
4. MICROCHIP XLP 16 Bit Development Kit User s Guide 2009 Microchip Technology Inc Note the following details of the code protection feature on Microchip devices Microchip products meet the specification contained in their particular Microchip Data Sheet Microchip believes that its family of products is one of the most secure families of its kind on the market today when used in the intended manner and under normal conditions There are dishonest and possibly illegal methods used to breach the code protection feature All of these methods to our knowledge require using the Microchip products in a manner outside the operating specifications contained in Microchip s Data Sheets Most likely the person doing so is engaged in theft of intellectual property Microchip is willing to work with the customer who is concerned about the integrity of their code Neither Microchip nor any other semiconductor manufacturer can guarantee the security of their code Code protection does not mean that we are guaranteeing the product as unbreakable Code protection is constantly evolving We at Microchip are committed to continuously improving the code protection features of our products Attempts to break Microchip s code protection feature may be a violation of the Digital Millennium Copyright Act If such acts allow unauthorized access to your software or other copyrighted work you may have a right to sue for relief under
5. 14 RS 232 Serial Port Options for more information 3 2 5 Master Clear Reset MCLR Switch The MCLR switch S1 is an active low switch with a pull up It resets the PIC24F microcontroller in either socket It does not reset the PIC18F14K50 microcontroller used for USB communication Therefore USB communication is not affected by this switch 3 2 6 Capacitive Touch Pads Three capacitive touch pads based on the Charge Time Measurement Unit CTMU are available They are multiplexed to three separate analog channels Table 3 4 In many capacitive touch applications an overlay is used to protect the PCB Mounting holes are provided to secure overlay materials for evaluation The low pin count devices supported by the XLP 16 bit board require that the touch pads be multiplexed with other board components Specifically CT2 is multiplexed with the temperature sensor circuitry while CT3 is shared with the Cap Sense socket with the C3 designator To avoid interference with the pads observe the modifications noted in Table 3 4 TABLE 3 4 CAPACITIVE TOUCH PAD ANALOG INPUT ASSIGNMENTS Cap Touch Button Analog Input Note 1 AN5 2 AN1 Remove JP5 3 ANO Unpopulate C3 socket DS51873A page 24 2009 Microchip Technology Inc XLP 16 Bit Development Board Hardware 3 2 7 User Defined Switches Two push button switches S2 and S3 are provided for user defined digital inputs They are connected t
6. 2 2 It permits the user to select which sensor information is displayed and to choose the microcontroller s low power mode This permits users to experiment with various low power and XLP techniques as well as make direct measurements The program flow is shown in Figure 2 3 FIGURE 2 2 SERIAL TERMINAL DISPLAY FOR THE DEMONSTRATION APPLICATION eadp HyperTerminal lol x File Edit View Call Transfer Help Current Sensor Temperature Reading Addr 0x21A0 09 22 2009 02 11 06 00 Temp 23 4C Wake from RTCC Taking Sample Storing Data Current LPMODE Sleep Current Sensor Temperature Reading Addr 0x21B0 09 22 2009 02 11 06 10 Temp 23 4C Wake from RTCC Taking Sample Storing Data Current LPMODE Sleep Temperature Reading Addr 0x21C0 09 22 2009 02 11 06 20 Temp 23 4C Wake from RTCC Taking Sample Storing Data Current LPMODE Sleep Current Sensor Temperat ure Reading fiddr 0x21D0 09 22 2009 02 11 06 30 Temp 23 4C Connected 0 01 15 Auto detect 38400 amp N 1 SCROLL CAPS NUM Capture Prini echo 4 On power up the PIC24F 16KA 102 device will wake up every 10 seconds from a Real Time Clock Calendar RTCC interrupt then re enter Sleep mode While awake the microcontroller takes a temperature measurement using the MCP9700 tempera ture sensor and writes the information to the serial EEPROM Status information is dis played including the wake up source lo
7. Accessories gt Communications gt HyperTerminal 2 At the initial Terminal window the Connection Description pop up dialog appears Select a name and icon for your connection session and choose a cus tom icon then click OK Use any convenient name that you choose This step is not mandatory but it makes connecting to the serial port much easier If you choose not to do this click Cancel 3 Atthe Connection Properties dialog select the COM port that was installed with the driver from the Connect Using drop down list Click OK 4 Atthe subsequent COM Properties dialog change the settings to a Bits per second 38400 b Data Bits 8 c Parity None d Stop Bits 1 e Flow Control None 5 Click OK to save the settings and close the COM dialog then click OK to close the Properties dialog Note Ifyou are using another serial terminal follow its normal session configuration procedure Be sure to use the settings in step 4 above At this point the terminal is connected to the XLP board and communicating through the emulated serial port It may be necessary to press S1 Master Clear to reset to the PIC24F microcontroller and obtain a display DS51873A page 16 2009 Microchip Technology Inc The XLP Demonstration Application 2 2 DEMONSTRATION PROGRAM OPERATION The demonstration program uses the on board RS232 to USB converter to send sys tem status data in serial form to a standard serial terminal Figure
8. DISABLING ON CHIP REGULATOR Component Placement and Value J series Regulator Option R3 R4 R5 C4 D EAD Test Point Split VDD and VDDCORE NP NP VDDCORE Same VDD and VDDCORE 0 NP 1 ko NP NP N C VDDCORE Zener diode NP P N C Legend NP not populated P populated 2009 Microchip Technology Inc DS51873A page 23 XLP 16 Bit Development Kit User s Guide 3 2 4 Component Select Jumpers A bank of jumpers is available to selectively enable various board components These jumpers located in the Power Control block on the board permit the user to perform customized power management analysis and configure the board more closely to the user s application By removing the jumper for a component power is disconnected to the designated IC and supporting circuitry eliminating power consumption to these components See Section 3 3 2 Component Power Measurement for more information on power monitoring When the IC PWR switch is set to the RB2 position the component select jumpers determine which components are under software control Any component not selected by its corresponding jumper remains disabled Component select jumpers are implemented for Serial EEPROM JP2 Modular expansion header JP6 e MCP9700 thermistor JP1 ADC HLVD potentiometer JP3 An additional jumper JP7 selects power for the unpopulated RS 232 serial circuitry See Section 3 2
9. all of the microcontrollers supported by the XLP development board The RJ 11 socket J4 supports the standard 6 wire connector for Microchip s MPLAB ICD 2 in circuit programmer debugger module Connector J5 is a standard 6 pin PICKit 2 programmer interface This provides a second low cost programming option in addition to MPLAB ICD 2 In addition the PIC18F14K50 USB microcontroller may be programmed separately from the PIC24F device A dedicated 6 pin interface J11 located adjacent to the RJ 11 interface is used for the PIC18 device 3 2 17 Prototype Area To assist in the development and testing of application hardware the XLP board includes a 15 x 9 prototype area for the installation of the user s custom circuitry Sources for board power both VDD SRC and VDD_BRD and ground are located adja cent to the area In addition the SDA and SCL signals for the 12C lines between the PIC24F microcontroller and the serial EEPROM have been provided at the unpopu lated header J13 adjacent to the prototype area This allows users to experiment with a multi device 12C bus in their application 3 3 CURRENT MEASUREMENT One of the great advantages of the XLP 16 bit board is its provisions for in circuit cur rent measurement Using simple techniques and equipment users can experiment directly with low power hardware and software techniques then directly measure their current consumption without introducing measurement induced artifacts Th
10. compatibility with the XLP 16 bit board In order to use the software for compatible PICtail modules the pin assignments defined in software will need to be remapped to those implemented in the interface This typically requires minor changes to the header file h of the software stack Note 1 The 100 kO potentiometer is multiplexed with pin 19 of the connector It is recommended to turn the potentiometer to its highest resistance setting to minimize the load on that pin s signal 2 Due to the limited availability of 1 0 ports on 20 pin PIC24F devices the modular expansion interface does not support these devices DS51873A page 26 2009 Microchip Technology Inc XLP 16 Bit Development Board Hardware 3 2 15 1 COMPATIBLE PICtail DAUGHTER BOARDS At the time of the writing of this user s guide the following PICtail daughter boards were compatible with the XLP 16 Bit Development Board through the modular interface e PICtail Board for SD and MMC Microchip part number AC164122 Speech Playback Daughter Board Microchip part number AC163027 4 e MRF49XA PICtail Plus Daughter Cards Microchip part numbers AC164137 1 and 2 Future PICtail boards may also be compatible with the interface It is up to users to evaluate any new boards that they may wish to use for signal compatibility 3 2 16 Programming Interfaces Two options for on board programming of the PIC24F microcontroller are provided both are compatible with
11. least this amount Note Always verify that the voltage selected on the LDO meets the VDD specification of the installed PIC24F device The performance of the MCP9700 and the LEDs is diminished at 1 8V operation If RS 232 communication is needed at 1 8V populate the LTC2801 and associated components See Section 3 2 14 RS 232 Serial Port Options for more information TABLE 3 2 RESISTOR VALUES FOR R28 R29 VOLTAGE DIVIDER Target VDD Component 1 8V 3 3V 5 0V R28 150 Q 1200 750 R29 450 Q 2009 339 3 234 ON CHIP REGULATOR CONFIGURATIONS PIC24F J SERIES The XLP 16 bit board supports multiple regulator configurations for PIC24F devices with an internal voltage regulator A slider switch S4 allows the user to configure the board for either J series or K series Flash devices With switch S4 in the PIC24FJ position the microcontroller s internal voltage regulator is enabled by connecting a pull down resistor to the DISVREG pin and a 10 pF capacitor to the VCAP pin For PIC24F J series devices additional power savings can be achieved by disabling the regulator Three methods are supported by making several component changes to the PIC24F VREG section of the PCB Separate power supply for VDD and VDDCORE VDDCORE and VDD connected together VDDCORE connected through a zener diode to VDD The required component changes are summarized in Table 3 3 TABLE 3 3 COMPONENT CHANGES FOR
12. list or specific location and Click Next 2 Inthe following dialogs browse to the location where the USB driver has been saved 3 Click through the subsequent dialogs as the driver installs Note For Windows XP one or more dialogs may warn that the driver has not been digitally signed This is normal Click OK to proceed through the dialogs 2009 Microchip Technology Inc DS51873A page 15 XLP 16 Bit Development Kit User s Guide FIGURE 2 1 STARTER KIT SETUP A to mini B USB Cable Development Board y S After the driver has installed it is necessary to determine the COM port number that has been assigned To do this open Device Manager from the Control Panel click on the System applet select the Hardware tab then click on Device Manager In the default view Device by Connection check under Ports COM amp LPT for the newly added COM port The actual number of the new COM port will vary depending on the hardware configuration of the system prior to driver installation 2 1 3 Configuring the Serial Terminal With the board connected and the USB driver installed the only remaining task is to configure the terminal session The process described here is for HyperTerminal other terminal software may vary 1 Launch HyperTerminal typically from the Start Menu Programs gt
13. required is a serial terminal program this is almost always installed with Windows in the form of HyperTerminal It is recommended that the driver files be downloaded from the Microchip web site and saved to a convenient directory before proceeding 2 1 1 Configuring and Connecting the Hardware To get started with the board verify that it is properly configured 1 Verify the PIC24F16KA102 is correctly installed into socket U1 The notch on the edge of the device package will be toward the top of the board Verify that S4 is in the PIC24K position Ensure the IC PWR switch is in the RB2 position Populate the PIC PWR and IC PWR jumpers Select EXT PS USB with the power source select jumper Select the MCP9700 temperature sensor option with the temp sense jumper Populate the TEMP SEE and POT jumpers Once configured connect the provided USB cable A to mini B to any available USB port on the PC or powered hub then to the board at the mini B receptacle J9 Figure 2 1 The PC USB connection provides communication and power to the board If the cable is connected correctly the green power LED D5 is lit NO aR WN 2 1 2 Installing the Driver At this point one or more pop up balloons in the system tray lower right of desktop should appear stating that the CDC RS 232 Emulator Demo device has been found The Found New Hardware Wizard dialog also appears To continue 1 Select the option Install from a
14. that Act Information contained in this publication regarding device applications and the like is provided only for your convenience and may be superseded by updates It is your responsibility to ensure that your application meets with your specifications MICROCHIP MAKES NO REPRESENTATIONS OR WARRANTIES OF ANY KIND WHETHER EXPRESS OR IMPLIED WRITTEN OR ORAL STATUTORY OR OTHERWISE RELATED TO THE INFORMATION INCLUDING BUT NOT LIMITED TO ITS CONDITION QUALITY PERFORMANCE MERCHANTABILITY OR FITNESS FOR PURPOSE Microchip disclaims all liability arising from this information and its use Use of Microchip devices in life support and or safety applications is entirely at the buyer s risk and the buyer agrees to defend indemnify and hold harmless Microchip from any and all damages claims suits or expenses resulting from such use No licenses are conveyed implicitly or otherwise under any Microchip intellectual property rights QUALITY MANAGEMENT SYSTEM CERTIFIED BY DNV ISO TS 16949 2002 Trademarks The Microchip name and logo the Microchip logo dsPIC KEELOQ KEELOQ logo MPLAB PIC PICmicro PICSTART rfPIC and UNI O are registered trademarks of Microchip Technology Incorporated in the U S A and other countries FilterLab Hampshire HI TECH C Linear Active Thermistor MXDEV MXLAB SEEVAL and The Embedded Control Solutions Company are registered trademarks of Microchip Technology Incorporated in the U S A Analo
15. to produce the voltage drop using the VDD and estimated current consumption found in the electrical specifications of the device data sheet 2 Connect the resistor across the through hole sockets Connect the scope s probes across the terminals of JP9 4 With the appropriate power supply connected and the scope configured for Differential Voltage mode remove the PIC MCU PWR jumper This sequence provides continuous microcontroller power and avoids a spurious BOR or POR event The resulting waveform will be a scalar representation of the current consumed by the PIC24F device This technique is especially useful for evaluating microcontroller power over a time interval e Note Since the resistor is placed in series with the PIC MCU VDD pin the result ing voltage drop may affect power calculations Ensure calculations are based on actual VDD instead of the supplied board voltage 3 3 2 Component Power Measurement The IC PWR jumper JP10 allows the user to measure the current consumed by the various board components It also permits the user to experiment with low power techniques on a variety of commonly used components Current measurements taken at JP10 exclude current consumption from the micro controller ICSP header and the USB interface Therefore communications with a host PC and emulator programmer connections do not need to be accounted for in determining an accurate current measurement as they are not in
16. 2 The SDA and SCI signals for the 12C bus are available to the user at test points near U6 and at take off points adjacent to the prototype area 3 2 11 Temperature Measurement Options The XLP 16 bit board features two different temperature sensing options An MCP9700 analog output thermistor U4 is connected to a PIC A D Converter input AN1 The thermistor s output voltage has a linear correlation to the temperature The thermistor is disconnected from the microcontroller by removing jumper JP5 To use I O pins efficiently the thermistor is multiplexed with Capacitive Touch Pad 3 Avoid contact with this pad during temperature measurements to minimize effect on temperature measurement accuracy The XLP 16 bit board also implements a conventional junction diode connected to an analog input to demonstrate low cost temperature sensing The Charge Time Measurement Unit CTMU provides a specified current to the diode an A D conver sion determines the voltage across the diode This voltage has a linear correlation to the diode s temperature For more information on this solution refer to Using the Pic MCU CTMU for Temperature Measurement DS93016 for more information The XLP 16 bit demonstration software implements both the MCP9700 and diode CTMU measure ment solutions via a compile time option By default the MCP9700 is used Note that when switching to the diode temperature measurement it may be necessary to calibrate the measu
17. 30 Development Kit Schematics USB SERIAL INTERFACE DEVELOPMENT BOARD SCHEMATIC SHEET 2 FIGURE A 2 EEPROM TEMPERATURE SENSORS AND 28 PIN INTERFACE 87 Le NV LOId aug GGA uz Gz PL WMd yZ Tz vas zz ve SNV E 6i NIGATH SL ZI 9 gt vl EL x8 0 vy 7 3 0 cu oas I zy 5 7 P g PS Y f ONV z T vigH LP AINO Old Nid 87 0SHdAT o 1 00344 aj m dsol asn J05U93S a1njoJadua Any vn aug gan Sy LYN d 9d LO vas s ant L Gos 915 wi ay Wiz ina SAT MIS NL sj ME if il LLYS Blu 9ScWvZ Sd 11 3 100 8d9A on vn 8 aya aa MNOHO WOSd33 Jll LNSWYNSVAN dN3L Ajuo sapow Jewog GSN pue OV 0 GE rr 28 Laor xuzn Quzn ses Weg CT a ge 904 Sp a LOS rot Loan ant gro Mie jdzc 4477 SE oy emt SAT 812 219 ES ben 1241 ornon zan 0094 004 KSE lex ao9d gr vases tasoj E ss ou rees O09Ab 1481 Old Zn jnp Lco DS51873A page 31 2009 Microchip Technology Inc MPLAB Starter Kit for PIC18F User s Guide POWER CIRCUIT AND DEVELOPMENT BOARD SCHEMATIC SHEET 3 SELECTOR JUMPERS FIGURE A 3
18. History ipte and aie 9 RS 232 Options ene tede tenes 26 Capacitive Sense Gocket 12 26 Capacitive Touch Pads occiso 12 24 S Component Power Gwitch nn 22 Schematic Diagrams oooooccccccoccccccncconanncccccnonancnncnnnno 29 Component Select Jumpers 12 24 Serial EEPROM coooccccccccncnnnnnnncncncncnnnnanananananononos 12 25 Current Measurement Serial Terminal Conftguration esseere eee 16 Component sse 28 T Microcontroller 27 Customer Notification Service s ssssseeeneieeneieernee 8 Temperature Sensors s s s 12 25 Customer SUPPOM ieee ee ee vt en eee 9 U D USB Connectivity essen 26 Demonstration Program M A AMI poh rn SA ns 17 USB Interface ccc e eere cente rae 12 Software FloW cats 18 User Defined Elei 12 25 Documentation User Defined Push Buttons 12 25 CONVENTIONS eise eerte t ttis 6 W Dri AC A ERAI MM CD Warranty Registration nn 7 Do M C D E GER 8 F Feature Availability by Device Family 21 l IC Power Control Switch 12 22 Initial Board Confouraton ne eeeenn eneee 15 Internet Address o ion 8 L LDO Regulator sese 12 23 M Master Clear Switch 12 24 Microchip Internet Web Site 8 Modular Expansion Connector 12 Compatible Boards sssss
19. IDE Project Manager and general editing and debugging features Programmers The latest information on Microchip programmers These include the MPLAB PM3 and PRO MATE II device programmers and the PICSTART Plus and PICkit 1 development programmers DS51873A page 8 2009 Microchip Technology Inc Preface CUSTOMER SUPPORT Users of Microchip products can receive assistance through several channels Distributor or Representative Local Sales Office Field Application Engineer FAE Technical Support Customers should contact their distributor representative or field application engineer FAE for support Local sales offices are also available to help customers A listing of sales offices and locations is included in the back of this document Technical support is available through the web site at http support microchip com DOCUMENT REVISION HISTORY Revision A October 2009 nitial Release of this Document WA M IA R J A E n 2009 Microchip Technology Inc DS51873A page 9 XLP 16 Bit Development Kit User s Guide NOTES DS51873A page 10 2009 Microchip Technology Inc XLP 16 BIT DEVELOPMENT KIT MICROCHIP USER S GUIDE Chapter 1 Introduction to the XLP 16 Bit Board 1 1 INTRODUCTION Thank you for purchasing Microchip Technology s XLP 16 Bit D
20. NTO can wake up the device The RTCC interrupt will continue to periodically wake up the microcontroller every 10 seconds The display indicates which wake up source is used to exit Deep Sleep mode Note While the capacitive touch pads are enabled the demo application will enter Sleep mode instead of Deep Sleep this permits the touch pads to remain active and exit the low power mode Pressing and holding S2 and S3 together for more than two seconds displays the EEPROMS contents This consists of a data log of date time entries from the RTCC and the simultaneous sensor measurement 2009 Microchip Technology Inc DS51873A page 19 XLP 16 Bit Development Kit User s Guide NOTES DS51873A page 20 2009 Microchip Technology Inc XLP 16 BIT DEVELOPMENT KIT MICROCHIP USER S GUIDE Chapter 3 XLP 16 Bit Development Board Hardware 3 1 INTRODUCTION This chapter provides a more detailed description of the hardware features of the XLP 16 Bit Development Board 3 2 HARDWARE FEATURES The key features of the XLP 16 bit board are listed below They are represented in the order given in Section 1 4 Development Board Features and Figure 1 1 3 2 1 PIC24F Processor Support The XLP 16 bit board has been designed to accommodate PIC24F microcontrollers in both 28 pin and 20 pin 300 mil DIP packages All pin signals on both sockets are also available for external monitoring on the 14 pin headers J1 and J2 locat
21. POPULATED CIRCUITS RS 232 AND UC HEADER U2RX R30 NL 4 x a amp B N S D CN a ae o LL E e a E P we Hi E Aleck a I e e A A Je tote I S a k a I S P a la uo E orem Ol y Ae Su a a v 1 Quy DM Ge ER 5 E a 4 zl 9 4 ND 8 m By N Il Q L LL 1 g gus eS tE 8 m END s s 3 gt S EN N E eek a N ON vs o s 2828852 9 A Qui JS Sp e e S 6 SONS TA 4 e NN E os uu kee x late 2 OS e nel a 2 ia a n Ze EES e Ba ens E EE 2 Ez ord 5 co a 29 o EE Wir A te S S 2293 S 225 Z a O lero D o Eee s e d N 1 ze E M N YN A a un Es Lu 5 Oy 2 S 3 Loy Sn O I x E amp 2 dl o r4 E m ss o az ajoja Tu gt le leo s o Fes al Mm o GN m T Um a a 2009 Microchip Technology Inc DS51873A page 33 MPLAB Starter Kit for PIC18F User s Guide NOTES DS51873A page 34 2009 Microchip Technology Inc XLP 16 BIT DEVELOPMENT KIT MICROCHIP USER S GUIDE Index B R Board Features sona aminda tai ain 12 Reading Recommended 7 Board Layouts metiers 13 A AA 7 C Revision
22. a Tel 63 2 634 9065 Fax 63 2 634 9069 Singapore Tel 65 6334 8870 Fax 65 6334 8850 Taiwan Hsin Chu Tel 886 3 6578 300 Fax 886 3 6578 370 Taiwan Kaohsiung Tel 886 7 536 4818 Fax 886 7 536 4803 Taiwan Taipei Tel 886 2 2500 6610 Fax 886 2 2508 0102 Thailand Bangkok Tel 66 2 694 1351 Fax 66 2 694 1350 EUROPE Austria Wels Tel 43 7242 2244 39 Fax 43 7242 2244 393 Denmark Copenhagen Tel 45 4450 2828 Fax 45 4485 2829 France Paris Tel 33 1 69 53 63 20 Fax 33 1 69 30 90 79 Germany Munich Tel 49 89 627 144 0 Fax 49 89 627 144 44 Italy Milan Tel 39 0331 742611 Fax 39 0331 466781 Netherlands Drunen Tel 31 416 690399 Fax 31 416 690340 Spain Madrid Tel 34 91 708 08 90 Fax 34 91 708 08 91 UK Wokingham Tel 44 118 921 5869 Fax 44 118 921 5820 03 26 09 DS51873A page 36 2009 Microchip Technology Inc
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24. cluded in the first place Since JP10 interrupts the VDD path to the board s other components always be certain to re install the jumper when measurements are not being taken 3 3 3 Ammeter Tool Header The XLP 16 bit board includes a special 7 pin header J10 for current measurement The PIC MCU PWR and IC PWR jumpers JP9 and JP10 ensure continuity of power when connecting or disconnecting a current measurement device DS51873A page 28 2009 Microchip Technology Inc XLP 16 BIT DEVELOPMENT KIT MICROCHIP USER S GUIDE Appendix A Development Kit Schematics The following schematic diagrams are included in this appendix Figure A 1 Microcontroller Sockets Headers and Associated Components Figure A 2 USB Serial Interface EEPROM Temperature Sensors and 28 Pin Interface Figure A 3 Power Circuit and Selector Jumpers Figure A 4 Unpopulated Circuits RS 232 and ES Header 2009 Microchip Technology Inc DS51873A page 29 MPLAB Starter Kit for PIC18F User s Guide MICROCONTROLLER SOCKETS HEADERS AND ASSOCIATED COMPONENTS DEVELOPMENT BOARD SCHEMATIC SHEET 1 FIGURE A 1 uojing 19 aen 0 GAP away z UOnhq 19 aen 0 1399908 9 ajondodun o 19 WEE VV onv 963
25. d As shipped the serial port circuitry and DB9 connector are not populated instead USB is used to communicate to the host PC By supporting two transceivers the user can choose between a low cost solution based on the MAX3221 3 0V to 5 5V or a wide voltage range 1 8V to 5 5V solution using the LTC2801 For operation at the low end of the board s VDD range 1 8V to 2 0V the MAX2331 is below its minimum specified operating voltage It is recommended that the LTC2801 circuit be populated in this circumstance The PIC24F microcontroller s TX and RX pins are also connected to the PIC18F 14K50 RX and TX pins and are used to convert the UART communication to USB When the RS 232 option is implemented remove the zero ohm resistor R27 to avoid contention with the PIC18F 14K50 3 2 15 Modular Expansion Connector The XLP 16 bit board implements a 28 pin modular expansion interface J7 Although physically similar to the PICtail M interface available on many Microchip demo and development boards it does not implement the full range of signals sup ported by the PICtail interface The connector pin assignments for J7 are shown in Appendix A Development Kit Schematics The XLP board s interface allows the board to provide basic generic functionality to select PICtail modules listed below and also be forward compatible with new PICtail technologies The user will need to review new modules as they become available to determine their
26. e O o PiCtall C NNECTOR 6 PIC24F OOOQOOQ O00000 CROCHIP 16blt XLP Development board E SQ Rete AN 1 MI 1 5 USING THE DEVELOPMENT BOARD OUT OF THE BOX Although intended as a development platform the XLP 16 bit board may also be used directly from the box as a demonstration platform for the preprogrammed PIC24F 16KA102 microcontroller Refer to Chapter 2 The XLP Demonstration Application for details on the demonstration code operation 2009 Microchip Technology Inc DS51873A page 13 XLP 16 Bit Development Kit User s Guide 1 6 DEMONSTRATION PROGRAM The preprogrammed example code on the PIC24F16KA102 device is available for download from the Microchip web site www microchip com XLP16BitBoard All required project files are provided so that the code may be used as an example or a plat form for further development These may be used with the included PIC24F16KA102 device by programming the device using an MPLAB ICD 2 programmer debugger PICkit starter kit or any other Microchip programming tool In addition the firmware for the USB to serial emulator that is preloaded on the PIC18F14K50 microcontroller is also provided Both source code in C and compiled code files in HEX format are included 1 7 REFERENCE DOCUMENTS In addition to the documents listed in the Recommended Reading section these doc uments are also available from Microchip to support the use of t
27. ection errorlevel 0 1 Ellipses Replaces repeated text var_name var_name Represents code supplied by user void main void DS51873A page 6 2009 Microchip Technology Inc Preface WARRANTY REGISTRATION Please complete the enclosed Warranty Registration Card and mail it promptly Sending in the Warranty Registration Card entitles users to receive new product updates Interim software releases are available at the Microchip web site RECOMMENDED READING This user s guide describes how to use XLP 16 Bit Development Board Other useful documents are listed below The following Microchip documents are available and recommended as supplemental reference resources Readme for XLP 16 Bit Development Board For the latest information on using the XLP 16 Bit Development Board refer to the file readme pdf in the XLP 16 Bit Development Board Demo subdirectory of the instal lation directory This file contains update information and known issues that may not be included in this user s guide PIC24F16KA102 Family Data Sheet DS39927 Consult this document for detailed information on the PIC24F K series Flash device that is pre installed in the development kit Reference information found in this data sheet includes Device memory map Device pinout and packaging details Device electrical specifications List of peripherals included on the device PIC24F Family R
28. ed on either side of the sockets 3 2 1 1 FEATURE AVAILABILITY BY PIC24F DEVICE FAMILY The high degree of pin compatibility between PIC24F device families makes it possible for the XLP 16 Bit Development Board to support many low pin count devices How ever there are a few minor pinout differences between families that make it difficult to create a universal board Of all of the board s features described in this chapter only three are not universally available to all PIC24F microcontrollers These are summa rized in Table 3 1 with details provided in subsequent sections Any feature that is not listed here is implemented uniformly for all PIC24F device families that are supported by the development board TABLE 3 1 FEATURES THAT ARE NOT UNIVERSALLY AVAILABLE Board Feature PIC24F Device Family Potentiometer D3 Yellow 26 Fin Modular Connector 28 pin J series 1 N Y 28 pin K series Y Y Y 20 pin K series Y Y N Note 1 Functions as an A D potentiometer only on these devices and as an A D and HVLD reference potentiometer on all others 3 2 2 PIC24F Oscillator Options The installed microcontroller has two separate oscillator circuits connected The main oscillator uses an 8 MHz crystal Y1 and functions as the primary oscillator A second circuit using a 32 768 kHz crystal Y2 functions as the Timer1 oscillator and serves as the source for the RTCC and secondary oscillator 2009 Microch
29. eference Manual This reference manual explains the operation of the PIC24F microcontroller family architecture and peripheral modules The specifics of each device family are discussed in the individual family s device data sheet This useful manual is on line in sections at the Technical Documentation section of the Microchip web site Refer to these sections for detailed information on PIC24F device operation 16 Bit MCU and DSC Programmer s Reference Manual DS70157 This manual is a software developer s reference for all of Microchip s 16 bit microcontrollers It describes the instruction set in detail and also provides general information to assist in developing software for PIC24 dsPIC30 and dsPIC33 MCUs 2009 Microchip Technology Inc DS51873A page 7 XLP 16 Bit Development Kit User s Guide THE MICROCHIP WEB SITE Microchip provides online support via our web site at www microchip com This web site is used as a means to make files and information easily available to customers Accessible by using your favorite Internet browser the web site contains the following information Product Support Data sheets and errata application notes and sample programs design resources user s guides and hardware support documents latest software releases and archived software General Technical Support Frequently Asked Questions FAQs technical support requests online discussion groups Microchip consultant program
30. ematics provides detailed schematics of the XLP 16 Bit Development Board 2009 Microchip Technology Inc DS51873A page 5 XLP 16 Bit Development Kit User s Guide CONVENTIONS USED IN THIS GUIDE This manual uses the following documentation conventions DOCUMENTATION CONVENTIONS Description Represents Examples Arial font Italic characters Referenced books MPLAB IDE User s Guide Emphasized text is the only compiler dialog Initial caps A window the Output window A dialog the Settings dialog A menu selection select Enable Programmer Quotes A field name in a window or Save project before build Underlined italic text with A menu path File gt Save right angle bracket Bold characters A dialog button Click OK A tab Click the Power tab Text in angle brackets lt gt A key on the keyboard Press lt Enter gt lt F1 gt Courier New font Plain Courier New Sample source code define START Filenames autoexec bat File paths e mecl8 h Keywords asm endasm static Command line options Opa Opa Bit values 0 1 Constants OxFF A Italic Courier New A variable argument file o where file can be any valid filename Square brackets Optional arguments mcc18 options file options Curly brackets and pipe character Choice of mutually exclusive arguments an OR sel
31. ents are identified with a DS number This number is located on the bottom of each page in front of the page number The numbering convention for the DS number is DSXXXXXA where XXXXX is the document number and A is the revision level of the document For the most up to date information on development tools see the MPLAB IDE on line help Select the Help menu and then Topics to open a list of available on line help files INTRODUCTION This chapter contains general information that will be useful to know before using the XLP 16 Bit Development Board Items discussed in this chapter include Document Layout Conventions Used in this Guide Warranty Registration Recommended Reading The Microchip Web Site Development Systems Customer Change Notification Service Customer Support Document Revision History DOCUMENT LAYOUT This document describes how to use the XLP 16 Bit Development Board as a develop ment tool to emulate and debug firmware on a target board The manual layout is as follows Chapter 1 Introduction to the XLP 16 Bit Board provides a brief overview of the XLP 16 Bit Development Board its features and its uses Chapter 2 The XLP Demonstration Application describes the preprogrammed demonstration program Chapter 3 XLP 16 Bit Development Board Hardware provides a more detailed description of the XLP 16 bit board s hardware features Appendix A Development Kit Sch
32. evelopment Board Kit The board provides a low cost highly configurable development system for Microchip s new line of PIC24F 28 and 20 pin Extreme Low Power XLP microcontrollers including the PIC24F16KA102 and PIC24FJ64GA102 families The XLP 16 bit board permits users to explore and evaluate extreme low power features and learn low power software and hardware techniques Various headers are available to measure both microcontroller and component power consumption It is flexible supporting six different power sources over a wide voltage range It is highly configurable equipped with a variety of common peripheral components that can be selectively enabled Finally itis expandable through its modular interface providing for the addition of advanced interfaces and connectivity methods As provided the XLP 16 Bit Development Board functions as a demonstration platform on initial power up The included demonstration software takes a temperature measurement datalogs information to the serial data EEPROM and displays informa tion to a host PC via a USB connection Additional software is provided to demonstrate low power techniques and IC interface routines 1 2 HIGHLIGHTS The XLP 16 Bit Development Board includes these features Support for both 20 pin and 28 pin versions of both PIC24F J series and K series Flash microcontrollers Accommodations for six different power source options Configurability for a wide range of operating voltage
33. g for the Digital Age Application Maestro CodeGuard dsPICDEM dsPICDEM net dsPICworks dsSPEAK ECAN ECONOMONITOR FanSense HI TIDE In Circuit Serial Programming ICSP Mindi MiWi MPASM MPLAB Certified logo MPLIB MPLINK mTouch Octopus Omniscient Code Generation PICC PICC 18 PICDEM PICDEM net DICK PICtail PIC logo REAL ICE rfLAB Select Mode Total Endurance TSHARC UniWinDriver WiperLock and ZENA are trademarks of Microchip Technology Incorporated in the U S A and other countries SQTP is a service mark of Microchip Technology Incorporated in the U S A All other trademarks mentioned herein are property of their respective companies 2009 Microchip Technology Incorporated Printed in the U S A All Rights Reserved gt Printed on recycled paper Microchip received ISO TS 16949 2002 certification for its worldwide headquarters design and wafer fabrication facilities in Chandler and Tempe Arizona Gresham Oregon and design centers in California and India The Company s quality system processes and procedures are for its PIC MCUs and dsPIC DSCs KEELOQ code hopping devices Serial EEPROMs microperipherals nonvolatile memory and analog products In addition Microchip s quality system for the design and manufacture of development systems is ISO 9001 2000 certified DS51873A page 2 2009 Microchip Technology Inc XLP 16 BIT DEVELOPMENT KIT MICROCHIP USER S GUIDE Table of Content
34. he XLP 16 Bit Development Board 25AA256 25LC256 256K SPI Bus Serial EEPROM Data Sheet DS21822 e MCP9700 9700A 9701 9701A Low Power Linear Active Thermistor ICs Data Sheet DS21942 PICkit 2 Programmer Debugger User s Guide DS51553 PICkit 3 Programmer Debugger User s Guide DS51795 MPLAB ICD 2 In Circuit Debugger Quick Start Guide DS51268 MPLAB REAL ICE In Circuit Emulator User s Guide DS51616 Compiled Tips n Tricks Guide DS01146 PIC24F Family Reference Manual Section 11 Charge Time Measurement Unit CTMU DS39724 e DS51873A page 14 2009 Microchip Technology Inc XLP 16 BIT DEVELOPMENT KIT MICROCHIP USER S GUIDE Chapter 2 The XLP Demonstration Application This chapter describes the demonstration application that is preprogrammed on the PIC24F microcontroller which shows the use of low power techniques in a working application In the process the application highlights various features of the PIC24F microcontroller family 2 1 INITIAL SETUP Although intended as a development platform the XLP 16 bit board is also designed to be used directly from the box as a demonstration platform The demonstration firmware preprogrammed into the PIC24F16KA102 microcontroller is ready for immediate use Apart from the USB to serial driver no special software is required to use the development board For users with a PC running Microsoft Windows all that is
35. ip Technology Inc DS51873A page 21 XLP 16 Bit Development Kit User s Guide 3 2 3 Power Sources The XLP 16 bit board can use any one of six power options for full operation 1 Bus power via the USB connector J9 This provides a nominal 5V power Source regulated to approximately 3 3V for the microcontroller and board com ponents through a Schottky diode and low dropout regulator LDO circuit D7 Q1 The green power LED D5 is illuminated when this power source is used and bus power is present 2 Anunregulated supply of 9 VDC nominal range of 5V to 12V supplied to J6 For default functionality a center hot power supply with a current capability of 100 mA is sufficient A larger power supply can be used up to 700 mA and may be needed to support PICtail accessories This voltage is fed into the on board regulator The green power LED is illuminated when this power source is used and power is present Note 1 The XLP 16 Bit Development Kit does not include a power supply If an external supply is needed use Microchip part number AC162039 2 Theregulated power supply options are provided for easier development Power consumption by a regulator circuit is not included in board power measurement 3 Two AAA batteries not included installed in BT2 The output voltage is not regu lated by the LDO so the microcontroller and board run at the voltage provided by the battery pair To minimize current consumption the powe
36. is provides a fast method of directly validating power saving strategies To make measurements more useful the development board allows for the measurement of microcontroller current draw and non microcontroller component current separately 3 3 1 PIC24F Current Measurement To measure current consumed by the PIC24F microcontroller the PIC PWR jumper JP9 can be removed and a current measurement cable connected to its pins This allows the user to empirically evaluate the microcontroller s various low power features Since JP9 interrupts the microcontroller s VDD path always be certain to re install the jumper when measurements are not being taken To avoid starving the microcontroller s current supply and causing low power conditions it may be necessary to switch the ammeter to a higher current range during programming and full power operation When the microcontroller is operating in a low power state switching to a low range will produce a more accurate measurement 2009 Microchip Technology Inc DS51873A page 27 XLP 16 Bit Development Kit User s Guide As an alternative two through hole sockets marked CURRENT MEASURE have also been placed in the microcontroller s VDD path Using an appropriately sized resistor will create a voltage drop corresponding to the current being consumed by the microcontroller this can in turn be measured with an oscilloscope To do this 1 Calculate the size of the resistor required
37. member listing Business of Microchip Product selector and ordering guides latest Microchip press releases listing of seminars and events listings of Microchip sales offices distributors and factory representatives DEVELOPMENT SYSTEMS CUSTOMER CHANGE NOTIFICATION SERVICE Microchip s customer notification service helps keep customers current on Microchip products Subscribers will receive e mail notification whenever there are changes updates revisions or errata related to a specified product family or development tool of interest To register access the Microchip web site at www microchip com click on Customer Change Notification and follow the registration instructions The Development Systems product group categories are Compilers The latest information on Microchip C compilers and other language tools These include the MPLAB C18 and MPLAB C30 C compilers MPASM and MPLAB ASM30 assemblers MPLINK and MPLAB LINK30 object linkers and MPLIB and MPLAB LIB30 object librarians Emulators The latest information on Microchip in circuit emulators This includes the MPLAB ICE 2000 and MPLAB ICE 4000 In Circuit Debuggers The latest information on the Microchip in circuit debugger MPLAB ICD 2 MPLAB IDE The latest information on Microchip MPLAB IDE the Windows Integrated Development Environment for development systems tools This list is focused on the MPLAB IDE MPLAB SIM simulator MPLAB
38. nt power switch IC PWR S7 allows for software enabled control of power by the PIC24F device to many of the board components When the switch is in the RB position the RB2 port pin can control power to components using a P channel FET switch U3 This permits experimentation with a popular technique to reduce an application s power consumption and extend battery life When the switch in the ON position component power is selected only by the corresponding component select jumper See Section 3 2 4 Component Select Jumpers for additional information DS51873A page 22 2009 Microchip Technology Inc XLP 16 Bit Development Board Hardware 3 2 3 2 POWER LED The green power LED D9 illuminates when power is supplied from either the external 9V power supply or the USB connector 3 2 3 3 ADJUSTABLE SUPPLY VOLTAGES The LDO regulator Q1 is adjustable and can support a wide voltage range for both board component and microcontrollers It can be configured between 1 8V to 5 5V by changing the values of the voltage divider formed by R28 and R29 Typical values are listed in Table 3 2 The equation relating the resistor values to target VDD is provided in Figure A 3 of Section Appendix A Development Kit Schematics As shipped the LDO is configured to supply 3 3V The typical drop of the LDO is approximately 1 75V Ensure the fixed power supply or USB supply voltage exceeds the desired microcontroller voltage by at
39. o the I O pins shown in Table 3 5 When pressed they pull the respective port pin to ground Using these switches requires the corresponding pin s internal weak pull ups be enabled When the switches are not required the pull ups can be disabled this adds the ability to reduce power consumption in software TABLE 3 5 PUSH BUTTON SWITCH INPUT ASSIGNMENTS Input Ports Switch Note 28 Pin 20 Pin S2 RB7 INTO RA6 CN8 Internal weak pull ups required S3 RB14 CN12 N C 3 2 8 Potentiometer A 100 kQ potentiometer R9 is connected to AN12 for all PIC24F devices It can be adjusted from VDD to Vss to provide an analog input voltage to the A D Converter On PIC24 K series Flash devices the potentiometer also provides a reference voltage for the High Low Voltage Detect HLVD module HLVD is not implemented on J series Flash devices 3 2 9 User Defined LEDs The board features one yellow and one red LED D2 and D3 that can serve as user defined outputs D2 is connected to the RB8 port pin for all PIC24F devices D3 is connected to RB15 on K series Flash devices only Ensure the correct device family is selected on switch S4 3 2 10 Serial EEPROM A 24AA256 256 KB 32 Kbyte x 8 serial EEPROM U6 is connected to 12C1 for both PIC24F 28 pin and 20 pin devices It is used to demonstrate 12C bus operation It is included for nonvolatile firmware storage in addition to the internal data EEPROM of the PIC24F16KA10
40. r LED is not illuminated for this power source 4 ACR2032 coin cell battery not included installed in BT1 As with the AAA battery option the microcontroller and board run directly from the 3V nominal battery voltage and the power LED is not illuminated 5 Two headers one 5 pin one 6 pin 0 05 pitch are provided to connect with exter nal energy harvesting development systems The headers are industry standard sizes commonly used with energy harvesting applications If you plan to use an energy harvesting system verify pin compatibility before proceeding 6 Anexternal regulated DC power supply connected to the VDD SRC and one of the GND test points Voltage is supplied to board and microcontroller without volt age drops or voltage regulation therefore supply voltage must meet the voltage requirements for the installed PIC24F device The power LED does not illuminate in this configuration The installed PIC24F16KA102 operates between 1 8V to 3 6V Refer to the appropriate device data sheet for other devices A four way jumper block POWER SOURCE SELECT J12 selects the power supply option The available options are USB EXT PWR AAA 2032 and HARVEST methods 1 through 5 above The default configuration as shipped is USB Power mode The jumper block does not control external power applied directly to the board method 6 since the test point is located in the circuit after the block 3 2 3 1 COMPONENT POWER SWITCH The compone
41. rement by changing the diode calibration constants to account for part to part variation in the diode 2009 Microchip Technology Inc DS51873A page 25 XLP 16 Bit Development Kit User s Guide 3 2 12 Capacitive Sense Socket The socket labeled Cap Sense permits the easy connection of a capacitive load to the input of the Charge Time Measurement Unit CTMU It connects to analog input ANO for 28 pin devices and AN10 for 20 pin devices It can be used to demonstrate CTMU measurements for capacitance time and voltage For additional information on measuring capacitance with the CTMU refer to the CTMU section of the PIC24F Family Reference Manual DS39724 3 2 13 USB Connectivity The 16 bit XLP board includes a PIC18F14K50 USB microcontroller U2 which pro vides USB connectivity and UART to USB protocol translation The PIC18F14K50 is hard wired to the PIC24F RX and TX pins and communicates with the PIC24 device through its UART The USB UART translation software is available in the USB stack release The PIC18F14K50 is clocked independently from the PIC24F microcontroller It uses its own 12 MHz crystal Y3 3 2 14 RS 232 Serial Port Options The XLP 16 bit board supports two types of RS 232 transceivers and associated sup port circuitry through a standard DB9 connector This port is configured as a DCE device and can be connected to a PC using a straight through cable Hardware flow control is not supporte
42. s A 5 Chapter 1 Introduction to the XLP 16 Bit Board afueren EE 11 A ON 11 Lee Kits oo tiec salsa 12 1 4 Development Board Features sse 12 1 5 Using the Development Board Out of the Box eesssseseesss 13 1 6 Demonstration Program a atem tiae odas est host Perte aeta p lavet eate 13 1 7 Reference Documents neret erret 14 Chapter 2 The XLP Demonstration Application ZO Setup at li 15 2 2 Demonstration Program Operation 17 Chapter 3 XLP 16 Bit Development Board Hardware 3 T Introduction visir 21 3 2 Hardware Features iii 21 3 3 Current Measurement iii 27 Appendix A Development Kit Schematics nen enet 29 Dis e C PE 35 Worldwide Sales and Service ccceeeeeeeeeeeeeeeeeeeeeneneneeeseeeeeeeeeeeeeeeeeeeeeaaesneeeeeees 36 2009 Microchip Technology Inc DS51873A page 3 XLP 16 Bit Development Kit User s Guide NOTES DS51873A page 4 2009 Microchip Technology Inc XLP 16 BIT DEVELOPMENT KIT MICROCHIP USER S GUIDE Preface NOTICE TO CUSTOMERS All documentation becomes dated and this manual is no exception Microchip tools and documentation are constantly evolving to meet customer needs so some actual dialogs and or tool descriptions may differ from those in this document Please refer to our web site www microchip com to obtain the latest documentation available Docum
43. s 1 8V to 5 5V Configuration selection jumpers to disable board components A hardware switchable option to control power to board components with port pin USB connectivity Provisions to add RS 232 transceivers not populated 5 user defined buttons 3 capacitive touch and 2 push buttons Two user defined LEDs Two temperature sensors Potentiometer for analog input or High Low Voltage Detect HLVD reference Built in capability for separately measuring microcontroller and component current consumption Support for all Microchip compatible programmers and emulators 2009 Microchip Technology Inc DS51873A page 11 XLP 16 Bit Development Kit User s Guide 1 3 WHAT S IN THE KIT The XLP 16 Bit Development Board Kit includes the following XLP 16 Bit Development Board with a preprogrammed PIC24F 16KA 102 microcontroller installed USB mini B cable 1 4 DEVELOPMENT BOARD FEATURES A layout of the XLP 16 Bit Development Board is shown in Figure 1 1 The board includes these specific features as indicated in the diagram 1 Shared footprint 20 pin and 28 pin 300 mil DIP sockets for PIC24F microcontrollers plus associated headers 2 Oscillator circuits 8 MHz and 32 768 kHz for PIC24F microcontrollers 3 Power supply area battery holders external power supply input LDO regulator and power supply select jumper a Interface headers for energy harvester demonstration kits IC power control switch IC PWR Power LED
44. susss 27 Modular Expansion Connechor eee 26 O On Chip Regulator Configuration PIC24FJ 12 23 Oscillator Optons nn nn 12 21 P PIC24F Device Sockets 12 PIC24F Processor Support 21 Poientomeier nn none 12 25 Power LED rg t eee desee ent 12 23 Power Source Select 22 Power Sources 12 22 Programming Intertaces neser reenen 12 27 Prototype Area 12 27 2009 Microchip Technology Inc DS51873A page 35 MICROCHIP WORLDWIDE SALES AND SERVICE AMERICAS Corporate Office 2355 West Chandler Blvd Chandler AZ 85224 6199 Tel 480 792 7200 Fax 480 792 7277 Technical Support http support microchip com Web Address www microchip com Atlanta Duluth GA Tel 678 957 9614 Fax 678 957 1455 Boston Westborough MA Tel 774 760 0087 Fax 774 760 0088 Chicago Itasca IL Tel 630 285 0071 Fax 630 285 0075 Cleveland Independence OH Tel 216 447 0464 Fax 216 447 0643 Dallas Addison TX Tel 972 818 7423 Fax 972 818 2924 Detroit Farmington Hills MI Tel 248 538 2250 Fax 248 538 2260 Kokomo Kokomo IN Tel 765 864 8360 Fax 765 864 8387 Los Angeles Mission Viejo CA Tel 949 462 9523 Fax 949 462 9608 Santa Clara Santa Clara CA Tel 408 961 6444 Fax 408 961 6445 Toronto Mississauga Ontario Canada Tel 905 673 0699 Fax 905 673 6509 ASIA PACIFIC Asia Pacific Offi
45. tton Press S2 Press S3 Press S3 Hold S2 and S3 Hold 034 Toaale i Transmit Force Switch Active U ART Switch Stored Sample Sensor Low Power EEPROM Transmit Mode Data Y Sample Active Sensors Store Sensor Data to EEPROM Transmit Current Sensor Data UART Enabled Enter Low Power Mode DS51873A page 18 2009 Microchip Technology Inc The XLP Demonstration Application When the capacitive sense pads are active the device wakes up more often once per second In addition data is only stored to the EEPROM when a capacitive touch event is detected The same is true when all sensors are active Pressing and holding S3 for more than two seconds selects between Sleep Deep Sleep and Idle modes for the PIC24 microcontroller In Deep Sleep most micro controller functions are disabled to minimize power consumption The available wake up sources supported by the XLP 16 Bit Development Board are RTCC interrupt External Interrupt 0 INTO and MCLR Reset When Idle mode is selected all peripher als continue to operate however program memory is disabled and code execution is stopped to reduce power consumption Because of the limited number of wake up sources available in Deep Sleep mode S3 can not wake the microcontroller However S1 MCLR Reset and S2 connected to I
46. w power mode selected sensor data EEPROM information and current temperature In the default POR configuration the RTCC interrupt is the wake up source while the MCP9700 is the active sensor Push button switches S2 and S3 select the active sensors and desired low power mode respectively To minimize power these switches use internal pull ups which are disabled in software when not in use Pressing S2 forces a sample to be taken immediately on the selected sensor This information is displayed on the HyperTerminal window Pressing S3 disables the output to the screen This permits power measurements with out the additional current consumed by the UART Pressing S3 again enables the UART and permits information to be displayed again Pressing and holding S2 for more than two seconds selects the sensor input Repeated presses cycle between the temperature sensor potentiometer capacitive touch pads and all three sensors at once The display reflects each new sensor selection When the potentiometer is selected both VDD and current potentiometer voltages are shown When the touch pads are selected their real time status is displayed When all three sources are active at once all of the sensor information is displayed at one time 2009 Microchip Technology Inc DS51873A page 17 XLP 16 Bit Development Kit User s Guide FIGURE 2 3 DEMO APPLICATION SOFTWARE FLOW Process Wake up or Reset Source Bu
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