sep 2011 micro solutions

8/4/2019 Sep 2011 Micro Solutions

1/13

In ThIs Issue...

www.microchip.com Microcontrollers Digital Signal Controllers Analog Memory Wireless

Sep 201

1

To learn more about the expanded capabilities o the chipKIT Development Platorms, visit:

http://www.microchip.com/pagehandler/en-us/press-release/microchip-and-digilent-announce-expanded-capabilit.html

Microchip and Digilent Create Network and Basic I/O Shields,

Support Resources or the chipKIT and Arduino CommunityShields and Support Resources Enable Hobbyists and Academics to Add More Features and

Functionality to Projects, Even If They Are Not Engineers

Microchip Technology Inc., and Digilent, Inc. announced expanded capabilities orthe 32-bit PIC32 microcontroller-based chipKIT Development Platorm or theArduino community. First, the companies unveiled two shields or the chipKITplatorm the chipKIT Basic I/O and Network Shields. Secondly, new online supportresources or the community are now available, including sotware library support orEthernet, CAN and USB, as well as an online chipKIT orum and wiki. The shields andonline support resources enable users to take advantage o the high-perormance, 32-

bit PICmicrocontroller-based chipKIT development platorm to add more eatures andunctionality to their projects, even i they are not engineers.

The chipKIT development platorm is a 32-bit Arduino solution that enables hobbyistsand academics to easily and inexpensively integrate electronics into their projects,even i they do not have an electronic-engineering background. The platorm consists o two PIC32-based development boardsand open-source sotware that is compatible with the Arduino programming language and development environment. The chipKIThardware is compatible with existing 3.3V Arduino shields and applications, and can be developed using a modied version othe Arduino IDE and existing Arduino resources, such as code examples, libraries, reerences and tutorials. The chipKIT BasicI/O Shield announced today is compatible with the chipKIT Uno32 and Max32 boards, and oers users simple pushbuttons, switches, LEDs, I2C EEPROM, I2C temperature sensor, and a 128 x 32 pixel organic LED graphic display. The chipKITNetwork Shield enables users to use the chipKIT Max32 development board to implement 10/100 Ethernet, USB OTG and CANcommunications.

The introduction o these two new shields or the chipKIT platorm demonstratesMicrochips and Digilents commitment to the Arduino community, said Fred Eady,hobbyist and editor with Nuts & Volts and SERVO Magazines. Not only will usershave additional I/O unctionality with the chipKIT Basic I/O Shield, they will be ableto integrate advanced communications such as Ethernet, CAN and USB into theirprojects with the Network Shield.

The chipKIT Basic I/O Shield (part # TDGL005) and chipKIT Network Shield(part # TDGL006) can be purchased today

1.Microchipand digilent createnetworkand Basic i/o shields,support resourcesforthechipkit and arduinocoMMunity

2. need an analog resistive usBtouch-screen controller?

3. new coMpact, high -efficiency rfpower aMplifierfor 5 ghz wi-fiapplications

need ultra-high -perforMance,low noise, auto -zero operationalaMplifiers?

4. Microchip introduces 150 Ma,16v voltage regulators withshort-circuit current foldBackanda high psrr of70 dB

5. does your design call for autility-Band power-l ine soft -ModeM developMent kit?

6. aBout retroBsd: a portofBsd unixtoa Microchip pic32Microcontroller

new Motor control kit offersadvanced Bldc control

7. knowMoreaBout MicrochipsMotor control starter kitwithMtouch sensing solutions

8. save 20% on third-party tools!offer ends 9/30/11

9. tryMicrochipdirectprograMMingfor free!

10.Join Microchip technologyateMBedded systeMs conference2011 in Boston

11.lookingto enhance youreMBedded control designs?

12.what's newin Microchipliterature

13.what's newatMicrochipdirect?
http://www.microchip.com/pagehandler/en-us/press-release/microchip-and-digilent-announce-expanded-capabilit.htmlhttp://www.digilentinc.com/http://www.microchip.com/en_US/family/32bit/http://www.microchip.com/stellent/idcplg?IdcService=SS_GET_PAGE&nodeId=2095&param=en553910http://www.microchip.com/stellent/idcplg?IdcService=SS_GET_PAGE&nodeId=2095&param=en553910http://www.chipkit.cc/forum/http://www.chipkit.cc/wiki/index.php?title=Main_Pagehttp://www.digilentinc.com/Products/Catalog.cfm?NavPath=2,892&Cat=18http://www.digilentinc.com/Products/Catalog.cfm?NavPath=2,892&Cat=18http://www.microchipdirect.com/ProductSearch.aspx?Keywords=TDGL002http://www.microchipdirect.com/ProductSearch.aspx?Keywords=TDGL003http://www.nutsvolts.com/http://servomagazine.com/http://www.microchipdirect.com/ProductSearch.aspx?Keywords=TDGL005http://www.microchipdirect.com/ProductSearch.aspx?Keywords=TDGL006http://www.microchipdirect.com/ProductSearch.aspx?Keywords=TDGL006http://www.microchipdirect.com/ProductSearch.aspx?Keywords=TDGL005http://servomagazine.com/http://www.nutsvolts.com/http://www.microchipdirect.com/ProductSearch.aspx?Keywords=TDGL003http://www.microchipdirect.com/ProductSearch.aspx?Keywords=TDGL002http://www.digilentinc.com/Products/Catalog.cfm?NavPath=2,892&Cat=18http://www.digilentinc.com/Products/Catalog.cfm?NavPath=2,892&Cat=18http://www.chipkit.cc/wiki/index.php?title=Main_Pagehttp://www.chipkit.cc/forum/http://www.microchip.com/stellent/idcplg?IdcService=SS_GET_PAGE&nodeId=2095&param=en553910http://www.microchip.com/stellent/idcplg?IdcService=SS_GET_PAGE&nodeId=2095&param=en553910http://www.microchip.com/en_US/family/32bit/http://www.digilentinc.com/http://www.microchip.com/pagehandler/en-us/press-release/microchip-and-digilent-announce-expanded-capabilit.html


2/13

www.microchip.com Microcontrollers Digital Signal Controllers Analog Memory Wireless 2

RETURN TO FRONT PAGE

Need an Analog Resistive USB Touch-Screen Controller?Controller Available as Turnkey Chip or Board Product, With Free Drivers for Most Major Operating Systems

Microchip announced the mTouch AR1100 Analog Resistive USB Touch-Screen Controller. Building uponthe AR1000 Analog Resistive Touch-Screen Controller series, the AR1100 controller is a high-perormance,USB plug-and-play device that oers advanced calibration capabilities as a USB mouse or single-inputdigitizer. The new controller is available as a turnkey chip or board product, supporting all 4-/5-/8-wire touchscreens, with ree drivers or most major operating systems. The AR1100 is an ideal solution or customers

who want a drop-in touch controller to universally support their entire standard resistive-touch portolio.Touch input is ast becoming a standard user interace. Resistive touch provides the advantages o easyintegration, low total system cost and acceptance o nger, glove or stylus input, to meet the needs oapplications such as medical devices, industrial controls, handwriting or signature capture, and othertouch-input mechanisms. Additionally, USB communication is the industry standard or attaching peripheralsto a computer. The AR1100 is an easy-to-integrate touch-screen controller that meets all o these needs ina single-chip solution. It also eatures advanced calibration options or alignment and linearization, enablingsuperior accuracy or 4-, 5- and 8-wire touch screens, as well as highly accurate button pressing or criticalapplications with tight spacing.

In addition to the AR1100 controller, Microchip announced enhancements to its AR1000 Analog Resistive Touch-Screen Controllers, with new high-volume market pricing, a ull suite o drivers including those or the WindowsCE, Linux and Android operating systems, and a new minimum operating

voltage down to 2.0 V. The AR1000 is a turnkey analog resistive touch controller that targets low-cost embedded applications using I2C, SPI or UARTcommunications.

The AR1100 controller is available in 20-pin SOIC, SSOP and QFN packages. The AR1100 is also available as a board product. The mTouch AR1100Development Kit (part # DV102012) includes an AR1100 production-ready PCB, with a USB cable and a 5-wire analog-resistive touch screen, enablingdesigners to quickly connect and test this advanced touch-screen controller. Samples o the controller can be ordered online.

To learn more about DLMS, visit:

http://www.microchip.com/stellent/idcplg?IdcService=SS_GET_PAGE&nodeId=2926
http://www.microchip.com/stellent/idcplg?IdcService=SS_GET_PAGE&nodeId=1406&dDocName=en555284http://www.microchip.com/wwwproducts/Devices.aspx?dDocName=en543349http://www.microchipdirect.com/productsearch.aspx?Keywords=DV102012http://www.microchip.com/samples/http://www.microchip.com/stellent/idcplg?IdcService=SS_GET_PAGE&nodeId=2926http://www.microchipdirect.com/productsearch.aspx?Keywords=DV102012http://www.microchip.com/stellent/idcplg?IdcService=SS_GET_PAGE&nodeId=2926http://www.microchip.com/samples/http://www.microchipdirect.com/productsearch.aspx?Keywords=DV102012http://www.microchip.com/wwwproducts/Devices.aspx?dDocName=en543349http://www.microchip.com/stellent/idcplg?IdcService=SS_GET_PAGE&nodeId=1406&dDocName=en555284http://www.microchip.com/stellent/idcplg?IdcService=SS_GET_PAGE&nodeId=1954http://twitter.com/MicrochipTechhttp://www.microchip.com/stellent/idcplg?IdcService=SS_GET_PAGE&nodeId=2568&param=en028158http://www.linkedin.com/e/gis/73575http://www.flickr.com/photos/microchiptechnologyhttp://www.facebook.com/microchiptechnology


3/13



New Compact, High-Efciency RF Power Amplifer or 5 GHz Wi-Fi ApplicationsMicrochip announced the new SST11CP15 RF power amplier or 5 GHz IEE 802.11a/n WLAN embeddedapplications. The device operates on the 4.9 to 5.9 GHz band, and oers a wide operating voltage o 3.3Vto 5V. The SST11CP15 eatures a high linear output power o 18 dBm at 2.5 percent EVM, using 802.11aOFDM 54 Mbps at 3.3V, and 20 dBm at 5.0V, and oers an output power o 23 dBm at mask compliance o6 Mbps, at 3.3V. The device is oered in a compact, 2 mm x 2 mm x .55 mm, 12-pin QFN package. It is idealor 5 GHz WLAN applications where small size and high-eciency operation are required, such as in wirelessmultimedia and MIMO applications or broadband gateway and consumer-electronics equipment.

The SST11CP15 meets the needs o designers who must reduce DC current consumption in their portablemultimedia and MIMO applications. With its high power-added eciency, the device reduces battery currentdrain and extends battery operation. Its 4.9 to 5.9 GHz linear operation enables 802.11a/n operation andincreases data rates, while its small size is ideal or space constrained applications.

With the addition o the SST11CP15 to Microchips Wi-Fipower amp portolio, Microchip now oers reliable,high-eciency operation, across the 5 GHz band, this meets customer demand or a broad portolio o

reliable RF power amps, with high power-added eciencies.

Developers can begin designing today with the SST11CP15 Evaluation Board (part # 11CP15-QUBE-K)

The SST11CP15 RF power amplier is available in a 2 mm x 2 mm x .55 mm, 12-pin QFN package. Samples are available online.

To learn more about the MCP6V2X, visit:

http://www.microchip.com/wwwproducts/Devices.aspx?dDocName=en555099

Need Ultra-High-Perormance, Low Noise, Auto-Zero Operational Amplifers?Microchip announced the MCP6V2X amily o operational amplifers (op amps). The new devices eaturea sel-correcting auto-zero architecture, which enables ultra-high precision, including an input oset voltageo just 2 microvolts and a gain bandwidth product o 2 MHz. With low noise o 50 nV/root Hz, the MCP6V2Xamily is a lower-noise alternative to Microchips existing amily o auto-zero op amps. Their low 2.3V to 5.5Voperating voltage allows batteries to be ully utilized, and their rail-to-rail input/output structure allows or

ull-range use, even in low-supply conditions. The devices are available in a compact, 8-pin MSOP package,and are ideal or applications in the consumer, industrial and medical markets, such as sensor and signalconditioning and instrumentation.

Applications that require low noise, low-voltage operation, ultra-high precision and low drit can benet romthe perormance and eatures o the MCP6V2X amily. With their auto-zero architecture, the devices oer ver yhigh accuracy over time and temperature, and their lower noise provides or higher accuracy and repeatability.Additionally, the MCP6V2X amilys low-voltage operation with rail-to-rail input/output enables greater dynamicrange, which leads to better perormance across the entire operating-voltage range.

The MCP6V26 is available in 8-pin SOIC, 8-pin MSOP and 2 mm x 3 mm 8-pin TDFN packages. The MCP6V27 is available in 8-pin SOIC, 8-pin MSOP and 4mm x 4 mm 8-pin DFN packages. The MCP6V28 is available in 8-pin SOIC, 8-pin MSOP and 2 mm x 3 mm 8-pin TDFN packages.

Samples are available online.

To learn more about the SST11CP15, visit:http://www.microchip.com/wwwproducts/Devices.aspx?dDocName=en550465
http://www.microchip.com/wwwproducts/Devices.aspx?dDocName=en550465http://www.microchip.com/samples/http://www.microchip.com/wwwproducts/Devices.aspx?dDocName=en555099http://www.microchip.com/wwwproducts/Devices.aspx?dDocName=en555099http://www.microchip.com/samples/http://www.microchip.com/wwwproducts/Devices.aspx?dDocName=en550465http://www.microchip.com/wwwproducts/Devices.aspx?dDocName=en550465http://www.microchip.com/samples/http://www.microchip.com/wwwproducts/Devices.aspx?dDocName=en555099http://www.microchip.com/wwwproducts/Devices.aspx?dDocName=en555099http://www.microchip.com/samples/http://www.microchip.com/wwwproducts/Devices.aspx?dDocName=en550465http://www.microchip.com/stellent/idcplg?IdcService=SS_GET_PAGE&nodeId=1954http://twitter.com/MicrochipTechhttp://www.microchip.com/stellent/idcplg?IdcService=SS_GET_PAGE&nodeId=2568&param=en028158http://www.linkedin.com/e/gis/73575http://www.flickr.com/photos/microchiptechnologyhttp://www.facebook.com/microchiptechnology


4/13



Microchip Introduces 150 mA, 16V Voltage Regulators

With Short-Circuit Current Foldback and a High PSRR o 70 dB

Microchip announced the MCP1754/MCP1754S low dropout regulators (LDOs). The devices eature ahigh PSRR o 70 dB at 1 kHz (typical), and a maximum output current o 150 mA at +125 degrees Celsius

junction temperature. Both LDOs oer a high input voltage o 16V and an output voltage range o 1.8V to

5.5V, with standard output voltages o 2V, 2.5V, 2.8V, 3V, 3.3V, 4V and 5V, and output voltage tolerances o+/-2.0 percent over the entire temperature range. The MCP1754 provides enhanced eatures, such as ashutdown input signal and a power-good output signal, while the MCP1754S is the baseline version o thedevice. These LDOs are ideal or electronic circuits, such as in GFCI and AFCI circuit-breaker designs, andin the automotive, medical and consumer electronics markets, such as in automotive power adapters, cellphones and medical devices.

Designers need a high-PSRR LDO to reject power-supply noise in sensitive electronic circuits, and theMCP1754/MCP1754S LDOs meet that need. The devices wide range o output-voltage options gives designengineers added fexibility, and their small package size takes up less space on the board, while reducingcost. Additionally, the LDOs can be used to power Microchips portolio oPIC microcontrollers, as well asother MCUs.

The MCP1754/MCP1754S voltage regulators typically deliver 70 dB o ripple rejection at 1 kHz, making the devices ideal or AC-sensitive applications, suchas GFCI and AFCI circuit-breaker designs. With the addition o these new devices to Microchips broad line o LDOs, engineers now have even more optionsto meet their needs.

The MCP1754/MCP1754S LDOs are available in 5-pin SOT-23, 3-lead SOT-23a and 3-lead SOT-89 packages. The devices are also available in 5-leadSOT-223 and 3-lead SOT-223 packages and in 8-lead 2 mm x 3 mm DFN packages.

Samples are available online.

Learn more about the MCP1754, visit:

http://www.microchip.com/wwwproducts/Devices.aspx?dDocName=en555287
http://www.microchip.com/wwwproducts/Devices.aspx?dDocName=en555287http://www.microchip.com/pichttp://www.microchip.com/samples/http://www.microchip.com/wwwproducts/Devices.aspx?dDocName=en555287http://www.microchip.com/wwwproducts/Devices.aspx?dDocName=en555287http://www.microchip.com/samples/http://www.microchip.com/pichttp://www.microchip.com/wwwproducts/Devices.aspx?dDocName=en555287http://www.microchip.com/stellent/idcplg?IdcService=SS_GET_PAGE&nodeId=1954http://twitter.com/MicrochipTechhttp://www.microchip.com/stellent/idcplg?IdcService=SS_GET_PAGE&nodeId=2568&param=en028158http://www.linkedin.com/e/gis/73575http://www.flickr.com/photos/microchiptechnologyhttp://www.facebook.com/microchiptechnology


5/13



Does Your Design Call or a Utility-Band Power-Line Sot-Modem

Development Kit?

6 kbps Software Modem Enables Low-Cost Communication and Control in Utility Power Meter, In-Home Energy

Monitoring and Control, and Smart-Grid Applications

The new Power-Line Modem (PLM)PICtail Plus Daughter Board Development Kit is compliantwith the utility requency band and enables products to communicate using the same wiring thatprovides power, creating an instant network at a low system and deployment cost. The kit providescommunication over power lines using a Binary Phase Shit Keying modulation scheme, with theonboard modem using the CELENEC A utility requency baseband o 72 kHz, or communicationat a rate o 6 kilobits per second (kbps). Additionally, the modem hardware is universal power-linecompatible, and can operate on 110V or 220V electrical systems. The sot modem is based uponthe scalable dsPIC33F Digital Signal Controller (DSC) architecture and interaces with MicrochipsExplorer 16 Development Board. It is supported with royalty-ree schematics, demo code andsotware in source-code ormat, all o which is available or download online.

The trend toward power-line communication is growing in response to increasing market demands or

connected products. Applications or power-line communication include utility power meters, in-homeenergy monitoring and control, and smart-grid applications. Following the launch o itsconsumer-band PLM PICtail Plus Daughter Board Development Kit earlier this year, the utility-bandPLM PICtail Plus Daughter Board Development Kit comes with two nodes, providing point-to-pointcommunication out o the box, meaning customers can have the daughter board running a selectiono demos in a matter o minutes. The BPSK scheme provides a robust modulation method thatperorms well in noisy environments, and the data rate can be selected in sotware. Additionally,

having a large portolio o dsPIC33F DSCs to choose rom allows the customer to select a device that matches the requirements o their application, andthat optimizes perormance and cost.

Microchip is expanding its presence in communications and connectivity by oering its second low-cost power line carrier solution. As demand or new utilitymeters and inrastructure continue to grow, Microchip will support its customers needs by oering this Utility A-band design based upon the popular PICtailPlus and Explorer 16 development systems.

The PLM PICtail Plus Daughter Board Development Kit (part # AC164145) includes two daughter boards and two sets o high-voltage adapter cables. Itcomes with royalty-ree schematics, demo code and sotware in source-code ormat, and is supported by the ree MPLAB IDE. The kit can be purchasedtoday, at microchipDIRECT.

Learn more about the Power-Line Modem (PLM) PICtail Plus Daughter Board Development Kit, visit:

http://www.microchip.com/stellent/idcplg?IdcService=SS_GET_PAGE&nodeId=1406&dDocName=en555186
http://www.microchip.com/stellent/idcplg?IdcService=SS_GET_PAGE&nodeId=1406&dDocName=en555186http://www.microchip.com/stellent/idcplg?IdcService=SS_GET_PAGE&nodeId=1406&dDocName=en555186http://www.microchip.com/stellent/idcplg?IdcService=SS_GET_PAGE&nodeId=2529&dDocName=en544803&redirects=DSChttp://www.microchip.com/stellent/idcplg?IdcService=SS_GET_PAGE&nodeId=1406&dDocName=en024858&part=DM240001http://www.microchip.com/stellent/idcplg?IdcService=SS_GET_PAGE&nodeId=1406&dDocName=en024858&part=DM240001http://www.microchip.com/get/9VT7http://www.microchip.com/stellent/idcplg?IdcService=SS_GET_PAGE&nodeId=1406&dDocName=en555186http://www.microchipdirect.com/productsearch.aspx?Keywords=AC164145http://www.microchip.com/mplabhttp://www.microchipdirect.com/http://www.microchip.com/stellent/idcplg?IdcService=SS_GET_PAGE&nodeId=1406&dDocName=en555186http://www.microchip.com/stellent/idcplg?IdcService=SS_GET_PAGE&nodeId=1406&dDocName=en555186http://www.microchip.com/stellent/idcplg?IdcService=SS_GET_PAGE&nodeId=1406&dDocName=en555186http://www.microchip.com/stellent/idcplg?IdcService=SS_GET_PAGE&nodeId=1406&dDocName=en555186http://www.microchipdirect.com/http://www.microchip.com/mplabhttp://www.microchipdirect.com/productsearch.aspx?Keywords=AC164145http://www.microchip.com/stellent/idcplg?IdcService=SS_GET_PAGE&nodeId=1406&dDocName=en555186http://www.microchip.com/get/9VT7http://www.microchip.com/stellent/idcplg?IdcService=SS_GET_PAGE&nodeId=1406&dDocName=en024858&part=DM240001http://www.microchip.com/stellent/idcplg?IdcService=SS_GET_PAGE&nodeId=1406&dDocName=en024858&part=DM240001http://www.microchip.com/stellent/idcplg?IdcService=SS_GET_PAGE&nodeId=2529&dDocName=en544803&redirects=DSChttp://www.microchip.com/stellent/idcplg?IdcService=SS_GET_PAGE&nodeId=1406&dDocName=en555186http://www.microchip.com/stellent/idcplg?IdcService=SS_GET_PAGE&nodeId=1406&dDocName=en555186http://www.microchip.com/stellent/idcplg?IdcService=SS_GET_PAGE&nodeId=1954http://twitter.com/MicrochipTechhttp://www.microchip.com/stellent/idcplg?IdcService=SS_GET_PAGE&nodeId=2568&param=en028158http://www.linkedin.com/e/gis/73575http://www.flickr.com/photos/microchiptechnologyhttp://www.facebook.com/microchiptechnology


6/13



About RetroBSD: A Port o BSD Unix to a

Microchip PIC32 Microcontroller

About RetroBSD: A Port of BSD Unix to a Microchip PIC32Microcontroller

By Serge Vakulenko

I started this work a year ago as a hobby project. Now I can

demonstrate a demo, running real Unix on a tiny development board.The project is hosted on Google Code: http://code.google.com/p/retrobsd/.

The system is targeted to a market o small embedded systems. Maineatures include:

y Small resource requirements: RetroBSD requires only 128 kbyteso RAM to be up and running user applications

y Memory protection: Using hardware mechanisms, kernel memoryis ully protected rom the user application

y Open unctionality: Usually, a user application is xed in Flashmemory, but in the case o RetroBSD, any number o applicationscould be placed into the SD card, and run as required

y Real multitasking: Standard POSIX API is implemented (ork,exec, wait4 etc)

y Development system on-board: It is possible to have a Ccompiler in the system, and to recompile the user application (orthe whole operating system) when needed

RetroBSD is based on 2.11BSD: the last in the series o BerkeleyUnixes or the PDP-11 architecture. I ported the kernel, C library and aset o basic utilities to the MIPS32 architecture, using GCC/Linux as

a development environment. I also created a PIC32 simulator basedon the Virtual MIPS opensource project (http://code.google.com/p/virtualmips/).

There exists a similar system named uCLinux that is widely used orsimilar purposes. But uCLinux requires ten times more RAM thanRetroBSD. It also has a limited multitasking capability (no ork), nomemory protection and no C compiler on-board.

I believe that RetroBSD could be quite popular or small embeddedsystems. For example, its possible to make something like a Unixstamp, as opposed to the widely known Basic stamp.

Read the ull blog post at:http://developer.mips.com/2011/08/06/about-retrobsd-a-port-o-bsd-

unix-to-a-microchip-pic32-microcontroller/

New Motor Control Kit Oers Advanced BLDC

ControlAdvanced motor control has traditionally required expensive developmenttools, equipment, and silicon to control the motor. Microchips new MotorControl Starter Kit (MCSK) coupled with the new low cost dsPIC33FJ16 amilyis changing all o that. The MCSK oers a simple, low cost tool to learningsensorless brushless DC (BLDC) motor control techniques.

BLDC motors eliminate the brushes o a traditional DC motor to achieve muchhigher reliability and long lie. In a simple brushed DC motor, the brushes makecontact with the rotor. Eventually the brushes wear out and have to be replaced.A brushless DC motor eliminates the brushes and is electrically commutated bya controller. BLDC motors have three phases (or windings) that are energized ina specic pattern in order to spin the rotor. (see diagram) The controller mustchange which phases are energized (and hence commutate) when the rotorreaches specic points in its rotation, so the controller must always know therotors position. Typically a BLDC system uses sensors to detect the positiono the rotor. However, these sensors introduce a point o ailure to the systemand also add costs or cabling and sensors. A more advanced BLDC systemuses eedback rom the windings to calculate the

position o the rotor and eliminates the sensors,cutting costs and improving reliability. While thissensorless technique isnt new, it can be dicultto understand and tricky to implement.

Enter the new Motor Control Starter Kit (MCSK)rom Microchip. The inexpensive kit includeseverything needed to learn sensorless BLDCmotor control rom the ground up. Fully supportedby Microchips MPLAB IDE, the MCSK comeswith everything on the board: an ultra low costdsPIC33F controller, USB programming and

debugging, a BLDC motor right on the board, andlots o test points to probe signals. It even has anmTouch slider or controlling the motors speed.Source code is available or ree. Finally the boardincludes complete hardware documentation,including schematics and bill o materials and isa great starting point or learning BLDC hardwaredesign. Available rom Microchip Direct, the MotorControl Starter Kit is truly the easiest and leastexpensive way to learn sensorless BLDC motorcontrol.

Learn more at:

http://www.microchip.com/mcsk
http://code.google.com/p/retrobsd/http://code.google.com/p/retrobsd/http://www.microchip.com/pic32http://developer.mips.com/2011/08/06/about-retrobsd-a-port-of-bsd-unix-to-a-microchip-pic32-microcontroller/http://developer.mips.com/2011/08/06/about-retrobsd-a-port-of-bsd-unix-to-a-microchip-pic32-microcontroller/http://www.microchip.com/ParamChartSearch/chart.aspx?branchID=8190&mid=14&lang=en&pageId=75http://www.microchip.com/mplabhttp://www.microchip.com/mcskhttp://www.microchip.com/mcskhttp://www.microchip.com/mplabhttp://www.microchip.com/ParamChartSearch/chart.aspx?branchID=8190&mid=14&lang=en&pageId=75http://developer.mips.com/2011/08/06/about-retrobsd-a-port-of-bsd-unix-to-a-microchip-pic32-microcontroller/http://developer.mips.com/2011/08/06/about-retrobsd-a-port-of-bsd-unix-to-a-microchip-pic32-microcontroller/http://www.microchip.com/pic32http://code.google.com/p/retrobsd/http://code.google.com/p/retrobsd/http://www.microchip.com/stellent/idcplg?IdcService=SS_GET_PAGE&nodeId=1954http://twitter.com/MicrochipTechhttp://www.microchip.com/stellent/idcplg?IdcService=SS_GET_PAGE&nodeId=2568&param=en028158http://www.linkedin.com/e/gis/73575http://www.flickr.com/photos/microchiptechnologyhttp://www.facebook.com/microchiptechnology


7/13www.microchip.com Microcontrollers Digital Signal Controllers Analog Memory Wireless 7


The Motor Control Starter Kit withmTouch Sensing Solutions is acomplete hardware and sotware toolsuite or evaluating Microchips ultra-lowcost Motor Control Family dsPIC DSCs.It provides a ready to use applicationthat demonstrates integration o anoise sensitive mTouch applicationwithin a standard Motor Controlenvironment.

It contains a single board with a BLDC motor, capacitive-touch sliders anda built-in debugger.

The gure below shows an overview o the starter kit schematicwhich is based on the dsPIC33FJ16MC102 DSC. The starter kit ispreprogrammed with an application eaturing integrated motor control andmTouch unctionality.

Motor Control Starter kit schematic

The powerul PWM module shown in the schematic allows easycontrol over the 3-phase BLDC motor. The PWM module eatures threecomplementary output pairs, hardware Fault shutdown, programmabledead time, among others. A standard 3-phase inverter is used tointerace the device and the motor. Three ADC channels provideinormation o the motors BEMF by reading the voltage on the motor

Know more about Microchips Motor Control Starter Kit with mTouch Sensing

Learn more about Microchips Motor Control Starter Kit with mTouch Sensing, visit:


windings. The dsPIC33FJ16MC102 DSC eatures three analog comparators.One internal comparator is used to trigger the Fault unction o the PWMmodule i an overcurrent condition occurs. The advantage o the internalcomparator is that dierent sotware thresholds can be used to implementovercurrent conditions on dierent motors.

The demonstration application accepts user inputs rom two sources: the

capacitive slider, and the push button. The devices CTMU module workstogether with the A/D Converter to sample and convert both the channels othe capacitive slider. Three user LEDs are also available or various displaycombinations.

Integrating Motor Control environment with mTouch application

The dsPIC33FJ16MC102 DSC runs at a maximum o 16 MHz, and hassucient resources to run the Motor Control Starter Kit demonstrationapplication, including the motor control and the mTouch eatures. Capacitivetouch applications require a noise ree environment, which is not the caseo motor control applications where MOSFETs turn on and o continuously,generating noise spikes on the power supply levels. In such an environment,

it is important to take the capacitive slider measurements at a time when noMOSFETs are switching. This is achieved by reducing the capacitance chargingtime to a minimum, by increasing the charging current, and synchronizing itto the PWM cycle. The ADC module o the dsPIC33FJ16MC102 DSC allowssimultaneous sampling o our dierent analog channels. Because threechannels are needed or the BEMF eedback rom the motors phases, onechannel remains available or the CTMU module. Both o the sliders channelsare sampled and converted alternatively on subsequent PWM cycles.

The CTMU module uses a trigger to start and stop charging o the sliderscapacitors. The trigger is congured in such a way that the ADC startsconversion a ew nanoseconds ater the capacitor has stopped charging. This

ensures that no PWM switching occurs while sampling the voltage on thecapacitor. However, avoiding the PWM switching events in the charging periodis also important. This is easily achieved in this conguration since the dutycycle is usually much larger than the capacitor charging time. Ater the ADCcompletes converting all our channels, three BEMF signals and one o thecapacitors, the ADC interrupt is triggered and the capacitor is discharged toallow charging another one in the next cycle.

The motor control application with mTouch on this starter kit is based on theapplication notes AN1160-Sensorless BLDC Control with Back-EMF FilteringUsing a Majority Function and AN1250 Microchip CTMU or Capacitive TouchApplications
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CHECK-IN at Microchip booth #201 to CONFIRM YOUR ATTENDANCE

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RETURN TO FRONT PAGEFor a complete list o classes and locations, visit www.microchip.com/RTC

In tough economic times, companies oten look or ways to trim expenses as

a means to cope with a downturn in sales. One o the areas oten targeted or

cutbacks is employee training. There is not only the direct cost o the training

to contend with, but also travel expenses and time an employee spends away

rom the job. During this challenging business climate, however, competitive

pressures and technology changes dont stop and it is training that can help a

company be better positioned to take advantage o the potential upswing.

Microchip, with its global

network o Regional Training

Centers (RTCs) and third-party

training partners, is here to helpcompanies stay competitive with

cost-eective, local training. To

help companies deal with issues

o travel expense and time,

classes are given not only in

Microchips acilities, but are also

taken on the road. Customized

customer premise sessions can be scheduled oering the most convenience.

Time away can be managed more eciently with the fexibility o hal or ull day

class sessions.

To be eective in teaching, instruction must take into account the needs and

expertise level o the attendee. Microchips Regional Training Center classes

are developed to provide a coordinated fow, enabling engineers to implement

a solution to their product development needs. Instruction is developed and

presented in product, technology and implementation classes that are grouped

into application based curriculum.

Each curriculum fow enables the individual to engage with the training at a level

that meets his or her current knowledge and needs. The intent is to provide

Looking to Enhance Your Embedded Control Designs?training that is relevant to each attendee while eliminating the rustration oten

associated with attending classes that present too much known inormation or

assume a level o knowledge beyond what the attendee currently possesses.

Product/tool classes provide knowledge on how Microchips products and

development tools operate. This knowledge provides the oundation upon

which all application instruction is based. Attendance at one o these classescan provide signicant value through the reduction in time associated with

instruction manuals and data sheet review or trial and error attempts to learn

individually. Market orces constantly press companies to add unctionality and

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result, engineers must continually broaden their knowledge base. Microchips

technology classes are intended to help engineers gain an understanding o a

new eld.

Implementation classes combine elements o product and technology instruction

to teach engineers how to design a real world application. Classes at this level

provide how-to instruction rather than what or why instruction.

Microchip is currently oering classes in the ollowing curriculum: DSP, Ethernet,Human Interace, Motor Control, Power Management, Signal Chain, System

Design and USB. Future curriculum is expected to include CAN/LIN, IrDA,

Lighting and RF.

With a worldwide network o Regional Training Centers and certied third-party

trainers, Microchip makes it easy to enhance your technical skills, with locations

in nearly every metropolitan area across the world!

For those organizations who desire to have a number o employees attend

a course at the same time, Microchip can customize any curriculum to meet

your specic needs. Our instructors arrive at your location with all presentation

materials and equipment, making it easy or your whole team to benet roma specic course topic in one setting. In addition to the instruction, most

Regional Training Center classes oer the opportunity to purchase a set o the

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I the class you are interested in is not scheduled in your area, you can sign up

to receive an alert when a session is scheduled.

For inormation on scheduling custom in-house training, contact your local RTC

directly or visit the Microchip RTC web site: www.microchip.com/RTC
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Whats Newin Microchip Literature? Visit our Technical Documentation page atwww.microchip.com to view the documents.

The Microchip name and logo, the Microchip logo, dsPIC, KEELOQ, KEELOQ logo, MPLAB, PIC,PICmicro, PICSTART, PIC32 logo, rPIC and UNI/O are registered trademarks o MicrochipTechnology Incorporated in the U.S.A. and other countries. FilterLab, Hampshire, HI-TECH C, Linear Active Thermistor, MXDEV, MXLAB, SEEVAL and The Embedded ControlSolutions Company are registered trademarks o Microchip Technology Incorporated in theU.S.A. Analog-or-the-Digital Age, Application Maestro, CodeGuard, dsPICDEM, dsPICDEM.net, dsPICworks, dsSPEAK, ECAN, ECONOMONITOR, FanSense, HI-TIDE, In-Circuit SerialProgramming, ICSP, Mindi, MiWi, MPASM, MPLAB Certiied logo, MPLIB, MPLINK, mTouch,Octopus, Omniscient Code Generation, PICC, PICC-18, PICDEM, PICDEM.net, PICkit, PICtail,REAL ICE, rLAB, Select Mode, Total Endurance, TSHARC, UniWinDriver, WiperLock and ZENAare trademarks o Microchip Technology Incorporated in the U.S.A. and other countries.SQTP is a service mark o Microchip Technology Incorporated in the U.S.A. All othertrademarks mentioned herein are property o their respective companies. 2011, Microchip Technology Incorporated, Printed in the U.S.A., All Rights Reserved.

Doc. Type Doc. Title DS No.

Data Sheet MCP3201 2.7V 12-bit A/D Converter with SPI InteraceData Sheet

21290F

TC53 Data Sheet 21432D

25AA010A Data Sheet 21832F

25AA020A Data Sheet 21833E

TC1270A Data Sheet 22035DMCP621/1S/2/3/4/5/9 - 20 MHz, 2.5 mA Op Amps with

mCal Data Sheet22188C

MCP6401/1R/1U/2/4/6/7/9 - 1 MHz, 45 uA Op Amps

Data Sheet22229C

MCP1754/MCP1754S - 150 mA, 16V, High Perormance

LDO Data Sheet22276A

MCP6V26/7/8 - 620 uA, 2 MHz Auto-Zeroed Op Amps

Data Sheet25007B

MCP7940X I2C RTCC with SRAM, Unique ID and Battery

Switchover Data Sheet25009B

PIC12LF1840T48A Data Sheet 41594AdsPIC33FJ32MC302/304, dsPIC33FJ64MCX02/X04 and

dsPIC33FJ128MCX02/X04 Data Sheet70291F

dsPIC33FJ32GP302/304, dsPIC33FJ64GPX02/X04, and

dsPIC33FJ128GPX02/X04 Data Sheet70292F

PIC24HJ32GP302/304, PIC24HJ64GPX02/X04,

PIC24HJ128GPX02/X04 Data Sheet70293F

dsPIC33EPXXXMU806/810/814 and

PIC24EPXXXGU810/814 Data Sheet70616D

Errata MCP9800/1/2/3 Rev. A Silicon/Data Sheet Errata 80331B

PIC18F1XK50 Errata 80411D

PIC18(L)F1XK22 Errata 80437E

PIC18(L)F25/45K22 Errata 80498D

PIC18(L)F23/24/43/44K22 Errata 80512C

PIC18(L)F26/46K22 Errata 80514C

PIC24FV32KA304 Family Errata 80522C

Programming

Specifcation

PIC24FJXXXDA1/DA2/GB2/GA3/GC0 Programming

Specication39970C

PIC12(L)F1501/JPIC16(L)F150X Programming

Specication41573C

PIC12LF1840T48A Programming Specication 41595APIC32MX Flash Programming Specication 61145J

Doc. Type Doc. Title DS No.

FRM Section Enhanced mTouch Capacitive Touch Evaluation Kit User'sGuide

41385D

CLC Conguration Tool User's Guide 41597A

AR1100 Calibration Utility User's Guide 41598A

AR1100 Firmware Download Utility User's Guide 41601AMCP73830/L - 2x2 TDFN Li-Ion Battery Charger

Evaluation Board User's Guide51992A

User's Guide ADC Evaluation Board or 16-Bit MCUs User's Guide 51994A

dsPICDSC Line Echo Cancellation Library Users Guide 70170D

dsPIC DSC Equalizer Library Users Guide 70347B

dsPIC DSC Automatic Gain Control (AGC) Users Guide 70611B

G.711 Speech Encoding/Decoding Library or 16-bit

MCUs and DSCs Users Guide70666A

Application

Note

Current Sensing Circuit Concepts and Fundamentals 01332B

Grid-Connected Solar Microinverter Reerence DesignUsing a dsPICDigital Signal Controller

01338C

MCP79410 Recommended Usage o Microchip Serial

RTCC Devices (Best Practices)01365B

FRM Section PIC32 Family Reerence Manual Section 17. 10-bitAnalog-to-Digital Converter (ADC)

61104E

PIC32 Family Reerence Manual Section 2. CPU 61113D

PIC32 Family Reerence Manual Section 10. Power-Saving

Modes61130F

Migration

Guide

dsPIC33FJ32MC202 to dsPIC33FJ16MC101/102 or

PIC24FJ16MC101/102 Migration Guide70667A
http://www.microchip.com/stellent/idcplg?IdcService=SS_GET_PAGE&nodeId=84http://www.microchip.com/stellent/idcplg?IdcService=SS_GET_PAGE&nodeId=84http://www.microchip.com/stellent/idcplg?IdcService=SS_GET_PAGE&nodeId=84http://www.microchip.com/stellent/idcplg?IdcService=SS_GET_PAGE&nodeId=84http://www.microchip.com/stellent/idcplg?IdcService=SS_GET_PAGE&nodeId=84http://www.microchip.com/stellent/idcplg?IdcService=SS_GET_PAGE&nodeId=84http://www.microchip.com/stellent/idcplg?IdcService=SS_GET_PAGE&nodeId=84http://www.microchip.com/stellent/idcplg?IdcService=SS_GET_PAGE&nodeId=84http://www.microchip.com/stellent/idcplg?IdcService=SS_GET_PAGE&nodeId=84http://www.microchip.com/stellent/idcplg?IdcService=SS_GET_PAGE&nodeId=84http://www.microchip.com/stellent/idcplg?IdcService=SS_GET_PAGE&nodeId=84http://www.microchip.com/stellent/idcplg?IdcService=SS_GET_PAGE&nodeId=1954http://twitter.com/MicrochipTechhttp://www.microchip.com/stellent/idcplg?IdcService=SS_GET_PAGE&nodeId=2568&param=en028158http://www.linkedin.com/e/gis/73575http://www.flickr.com/photos/microchiptechnologyhttp://www.facebook.com/microchiptechnology


13/13www microchip com Microcontrollers Digital Signal Controllers Analog Memory Wireless 13


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Two new categories have been added towww.microchipDIRECT.com making it easier to nd third-partydevelopment tools that compliment Microchips solutions and

low-cost, academic-riendly tools or educators and students.How to access the new categories:

Select the products pull-down menu:

Third-Party Tools

Select 3rd Party Tools rom the

Development Tools Menu:

Academic Tools

Select Academic Tools rom the

Development Tools Menu:
http://www.microchipdirect.com/http://www.microchipdirect.com/http://www.microchipdirect.com/http://www.microchipdirect.com/programminghttp://www.microchipdirect.com/http://www.microchipdirect.com/http://www.microchipdirect.com/programminghttp://www.microchipdirect.com/http://www.microchipdirect.com/http://www.microchip.com/stellent/idcplg?IdcService=SS_GET_PAGE&nodeId=1954http://twitter.com/MicrochipTechhttp://www.microchip.com/stellent/idcplg?IdcService=SS_GET_PAGE&nodeId=2568&param=en028158http://www.linkedin.com/e/gis/73575http://www.flickr.com/photos/microchiptechnologyhttp://www.facebook.com/microchiptechnology

sep 2011 micro solutions

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