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Compaq, Philips, NEC, Kodak, Nokia, US Military, “Hi - I’m Alan Microsoft, Dell, Xerox, - you can email me at 585-425-3753 • Fax: -3835 Universities, T.I., Dalsa, [email protected] for free advice for your control or Harris, Litton, Sony, J&J, www.saelig.com • [email protected] measurement problem.” Thomson, H-P, Agilent, etc. S 12 Driving the NKK Smartswitch ISSUE Part 1: Configuration and Software Aubrey Kagan E 20 Short Solutions Build a Graphics LCD Bias Supply AVR MCU-Based AC Phase Controller R 144 Brian Millier 24 An 80C31-Controlled Power Supply U Noel Rios 34 Taming the Transients George Novacek T 42 LCD Controller for a PIC Peter Chia A 52 RoCK Specifications Part 4: Tying Up Loose Ends E Joseph Jones & Ben Wirz 60 Dealing With Motor Control Dead-Time Distortion F Ross Bannatyne & Dave Wilson 66 Starting Down the Pipeline Part 2: The Long and Short of It Jim Turley S 6 Task Manager N 30 II ROBOTICS CORNER Jennifer Huber Reliable Information Extreme OSMC Part 2: The Modular OSMC Brain M Sonny LIoyd 8 New Product News edited by John Gorsky 46 I APPLIED PCs Building a Modular Programming Platform 11 Test Your EQ U Part 1: The Program Module Fred Eady 94 Advertiser’s Index 70 I FROM THE BENCH August Preview L SmartMedia File Storage Part 2: Directory Entries 96 Priority Interrupt O Jeff Bachiochi Steve Ciarcia Like Avoiding a Bus 78 I SILICON UPDATE Eight Isn’t Enough C Tom Cantrell www.circuitcellar.com CIRCUIT CELLAR® Issue 144 July 2002 5 TASK MANAGER Reliable Information EDITORIAL DIRECTOR/PUBLISHER CHIEF FINANCIAL OFFICER Steve Ciarcia Jeannette Ciarcia WEB GROUP PUBLISHER ACCOUNTANT Jack Shandle Howard fnerGef CUSTOMER SERVICE MANAGING EDITOR w Jennifer Huber Elaine Johnston ART DIRECTOR SENIOR EDITOR KC Prescott alkerRob W ?syalpsi delbaile rtuohti we be wdluo wereh GRAPHIC DESIGNER to ns istuodae rata do tssecc aetaidemm ignivaH TECHNICAL EDITOR urekMary T C.J. Abate ro F.snoitacilpp ayna mn ilaicur cs’t i,lufes uylno STAFF ENGINEERS WEST COAST EDITOR f JefBachiochi lacide mro fdeyale rsegasse mesicno cdn akciu q,ecnatsni om CantrellT John Gorsky -amotu aemo hruo yn okceh cylisa eo tytilib aeh T.sevi leva sna ctnempiuqe CONTRIBUTING EDITORS QUIZ COORDINATOR f ostifene beh T.emo hdn aylima fruo ytcetor puo yple hna cmetsy snoit Ingo Cyliax weed David T .snoitacilpp af oarohtel pan isuoivb oer asyalpsi dscihpar gtneced Fred Eady George Martin EDITORIAL ADVISORY BOARD -tseretn idni fll’uo yeru ser’e wtah twe fatuob aselcitr asniatno ceuss isihT George Novacek Ingo Cyliax eh terolpx eo temi tsa wt idedice dnaga Kyerbu A,sd aeh tgniee sretf A.gni Norman Jackson NEWPRODUCTSEDITOR David Prutchi eka mo tdetna wosl ae H.sehctiw SKK Nmor fhctiwstram Seh tf oseitilibapac John Gorsky -elgni sas ihctiwstram Seh T.smetsysorci Msserpy Cmor fCoS Peh tf oesu PROJECT EDITORS f ostluse reh T.hctiw seh tsetavitc aDC Ln A.nep oyllamro ns’tah thctiw selop Steve Bedford weedDavid T elbarova fn iCoS Peh ts alle ws ahctiwstram Seh ttu pyletinife dtcejor peht .flesruo ymeh ttse tna cuo y,edo cecruo ss’yerbu Ahti wgnikro W.thgil Cover photograph Ron Meadows—Meadows Marketing n osba tgnipee K.2 4ega po tnru t,syalpsi dscihpar gn ognidae rrehtru froF PRINTED IN THE UNITED STATES n oyle ro teva huo yneh wgniyonn ate gna csecive dCI Phti wtliu bsmetsys ADVERTISING s’aih Crete Ptuob agnidae rretf a,tu B.syalpsi dtnemges-neve sr osDE Lrehtie ADVERTISING SALES MANAGER gnio df oya wdradnat seh ttpecc ao tgniva hf onoito nruo ytegro fll’uo y,tcejorp Sean Donnelly 1Fax: (860) 871-041 sul prehton A?secive dCI Pro frellortno cDC Ln agnidliu btuob atah W.sgniht (860) 872-3064 .comE-mail: sean@circuitcellar Cell phone: (860) 930-4326 .nwo der asesnepx eo s,stra pwe fayln oses utcejor psre’te Ptah tsi gnis U.lle ws a,snoitseggu ssre’illi Mnair Bhti wyeno memo seva sna cuoY ADVERTISINGCOORDINATOR alerie LusterV 1Fax: (860) 871-041 yalpsi delbarise dniatnia mo two hselkca te h,rellortnocorci mevisnepxen ina (860) 875-2199 .comE-mail: val.luster@circuitcellar eh tgnizilibat ss isseccu so tye keh T.serutarepme tf oegna rarev otsartnoc ADVERTISING CLERK .elbaira vte yelbat ssai beh tpee ko tsegana mnair B,orci mRV An ahti W.saib Deborah Lavoie 1Fax: (860) 871-041 -ssucsi dosl anair B,noitulo sDC Leh to tnoitidd an I.ereh tpot st’nseo de h,tuB (860) 875-2199 .comE-mail: debbie.lavoie@circuitcellar .rellortno cesah pC Adesab-rellortnocorci mRV An ase CONTACTING CIRCUIT CELLAR -ireta mdetaler-yalpsi df oeso dyhtlae hate guo y,euss isih ttuohguorh t,oS SUBSCRIPTIONS: INFORMATION: www.circuitcellar.com or [email protected] -ple hsyawl aer ahcih w,smelbor placipy to tsnoitulo stuob akla tselcitr aeh T.la To Subscribe: (800) 269-6301, www.circuitcellar.com/subscribe.htm, or [email protected] -retn iruo yeuqi pthgi mtah teludo mDC Lwe nao tuo yecudortn is alle ws a,luf PROBLEMS: [email protected] uo ygnivi gs isnoitacilpp asre’te Pdn anair Bneewte bdaerh tnommo ceh T.tse GENERAL INFORMATION: TELEPHONE: (860) 875-2199 Fax: (860) 871-0411 .emocle wsyawl as’tah ttifene brehton aylsuoivb o,yeno meva so tsyaw INTERNET: [email protected], [email protected], or www.circuitcellar.com nah treht oscipo tf oyteira varevo ctah tselcitr adni fosl all’uo y,euss isih tnI EDITORIAL OFFICES: Editor, Circuit Cellar, 4 Park St., Vernon, CT 06066 NEWPRODUCTS: New Products, Circuit Cellar, 4 Park St., Vernon, CT 06066 hti wkca bs i,kecavo Negroe G,rotubirtno ctneuqer fA.oedi vdn ascihparg [email protected] AUTHOR CONTACT: ruo ygnivorpm in idetseretn ier’uo yf I.stneisnar tema to two hn onoitcurtsni E-MAIL: Author addresses (when available) included at the end of each article. -alpx es’nosli Weva Ddn aenytanna Bsso Rdae ro ttna wll’uo y,lortno crotom For information on authorized reprints of articles, uo ysserpm illi wyeh T.emi tdae dy bdesua cnoitrotsi deldna ho two hf onoitan contact Jeannette Ciarcia (860) 875-2199 or e-mail [email protected]. .roto mgninnur-htoom s,teiu qaselban etah tnoitulo sevisnepxen irieh thtiw CIRCUIT CELLAR®, THE MAGAZINE FOR COMPUTER TIONS APPLICA(ISSN 1528-0608) and Circuit Cellar Online are pub- KCoR “f otnemllatsn ilani fdn ahtruo feh tro f0 5ega po tnru t,oslA lished monthly by Circuit Cellar Incorporated, 4 Park Street, Suite 20, ernon, VCT 06066 (860) 875-2751. 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Circuit Cellar® makes no claims or warrants that reade rs have a right to build things based upon these ideas under patent or other relevant intellectual property law in their jurisdiction, or that rea ders have a right to construct or operate any of the devices described herein under the relevant patent or other intellectual property law of the re aders ’jurisdiction. The reader assumes any risk of infringement liability for constructing or operating such devices. [email protected] Entire contents copyright © 2001 by Circuit Cellar Incorporated. All rights reserved. Circuit Cellar and Circuit Cellar INK are registered trademarks of Circuit Cellar Inc. Reproduction of this publication in whole or in part without written consent from Circuit Cellar Inc. is prohibited. 6 Issue 144 July 2002 CIRCUIT CELLAR® www.circuitcellar.com NEW PRODUCT NEWS Edited by John Gorsky PC/104 ETHERNET LAN ADAPTER UNIVERSAL DEVICE PROGRAMMER The PC104-ELCis a 16-bit high performance The Model 869is a universal stand-alone programmer Ethernet LAN card. Its features include –40°C to 85°C designed to program chips while connected to a comput- extended operation and full compatibility with IEEE er or in the field without the use of a computer. The 802.3 standards. The card delivers full-duplex Ethernet Model 869 uses B&K Precision's device libraries, which data transmission at speeds up to 10 Mbps. support PROMs, EPROMs, PLDs, and microcontrollers. The PC104-ELC automatically detects whether it is An extensive line of socket adapters to interface with connected to an 8- PLCC, SOIC, TSOP, DIP, TQFP, SSOP, PSOP, or QFP or 16-bit system. devices is also available. The card has a After its setup, the built-in RJ-45 con- Model 869 can be nector, 10Base-T taken into the field transceiver, and and used as a stand- optional BNC con- alone device. nector support The Model 869 10Base-2. It can be comes with a 48-pin installed under ZIF socket and offers PnP and jumper- buffer features less methods or including erase, ran- jumper selection. dom data fill, fill This adapter is fully NE2000-compatible.It comes block, copy block, move block, swap block, buffer print, with drivers that support network operating systems find text, replace text, 8- and 16-bit view modes, go to OS/2 LAN, Novell NetWare, and Microsoft LAN address, checksum calculator, and a standard parallel Manager. printer port interface. The PC104-ELC costs $159. Volume discounts for The Model 869, with a library, costs $995. It comes OEM and distributors are available. with software, AC adapter, and parallel cable. Radicom Research, Inc. B&K Precision Corp. (408) 392-9688 (714) 237-9220 www.radi.com www.bkprecision.com THERMALLY ENHANCED MOSFETS The SUM110Nxxand SUM85NxxTrenchFETs are 42-V Boardnet applications. Additionally, they work in power MOSFETs in a thermally enhanced D2PAK pack- communications applications, including primary side age. They enable a low level of thermal resistance and switching in the isolated DC/DC converters used in are capable of handling 29% more current than the con- servers, routers, and networks. ventional D2PAK. Compared with conventional D2PAK devices, the The new n-channel 40- to 200-V TrenchFETs are new SUM series offers up to 29% higher maximum designed for use in automotive applications, including current (110 A), 75% higher power dissipation (up to motor control, ABS, electric power steering, and 12- and 437.5 W), and on-resistance as low as 2.3 mW. Thermal resistance is as low as 0.4°C per watt, which is 33% lower than in standard D2PAK devices. As a result, the devices can handle higher current and more power, or run cooler while handling the same amount of current and power. Select D2PAK TrenchFETs in the series fea- ture a maximum junction temperature as high as 200°C, an improvement of as much as 14% over the standard D2PAK. The SUM110Nxxand SUM85Nxxcost $2.17in 100,000-piece quantities. Vishay Silconix (408) 988-8000 www.vishay.com 8 Issue 144 July 2002 CIRCUIT CELLAR® www.circuitcellar.com