pulseEconais rolls out Wi-Fi audiostreamingreference designBased on the company’sWiSmart EC32S13Wi-Fi module, Econaisnow offers the WisAudio referencedesign for streamingraw uncompressed (WAV) andcompressed (MP3, FLAC, AAC)audio over Wi-Fi. In addition,DLNA 1.5 support makes itcompatible with DLNA-capablesmartphones, smart TVs, gameconsoles, and PCs.WisAudio performs on-the-fl yaudio decoding, which requiresless bandwidth than the conventionalWAV approach, whileretaining the ability to play WAVaudio. Econais reports that thereference design delivers highsound quality for WAV andFLAC streams, yet consumesminimal power when usingencoded audio. The designis compact and can fi t into aheadset or speaker.The reference design’sonboard EC32S13 modulewith embedded MCUruns the TCP/IP stack, aswell as the authenticationand security protocols. Audiodecoding and processing areperformed by a VLSI VS1053audio codec to natively port WAV, OGG, MP3, AAC,sup-WMA, FLAC, and MIDI formatswith on-the-fly audio decoding.The evaluation board alsoincludes an embedded chipantenna with a range of up to400m in open space. Optionally,an external antenna can bemounted on the board.View a demo video at http://The WisAudio referencedesign from Econais allowsusers to stream raw compressedand uncompressedaudio over Wi-Fi.bit.ly/17KiHca to learn moreabout the WisAudio referencedesign.—by Susan Nordyk▷Econais,www.econais.comMicrocontrollers with ultralow power and USB targetemerging mobile healthcare, smart homes,and the Internet of Things05.13Renesas Electronics has introducedthe first in its RX100 Seriesof ultralow-power, 32-bit microcontrollers.The RX<strong>11</strong>1 Group is producedon an ultralow-power zerowait-stateflash process supportingmarket-leading 32-bit power-consumption/performancelevels aswell as fast wake-up. It has a widerange of standard peripherals andmultiple safety functions, as wellas an integrated USB 2.0 peripheralsupporting host, device, and onthe-go(OTG) functionality.This new device group bringsthe ultralow-power features of theRenesas 8/16-bit RL78 MCU Seriesto the 32-bit RX product lineup,offering a greater range of devicescalability and functionality. TheRX<strong>11</strong>1 devices are designed tosupport a broad range of low-end32-bit embedded applications, includingmobile healthcare, smartmeters, sensors/detectors, and industrialand building automation.The company’s True Low-Powercapability offers designers the lowestpossible power consumptionacross a range of temperatures andvoltages, including all peripheralsand flash memory, while also providingmaximum flexibility with multipleoperational and sleep modes.This setup allows for the lowestpossible power consumption forthe user’s application environment.The new RX<strong>11</strong>1 devices feature32-MHz operating speeds and1.56 Dhrystone MIPS (DMIPS)/MHzthroughput, with power consumptionas low as 64 µA/DMIPS. TheMCUs also achieve 3.<strong>08</strong> CoreMark/MHz and 14.9 CoreMark/mA.The new devices support multiplecommunications peripherals, includingUSB 2.0 host/function andbattery charging, OTG, I 2 C, and SPIprotocols. Analog functions includea 12-bit ADC with internal voltagereference, an 8-bit DAC, and a temperaturesensor.The Renesas Starter Kit (RSK)provides sample drivers (mass storageclass, communication class,and HID class), applications ofhigh-speed charging by USB, andvarious middleware alongside theevaluation board and developmentenvironment required for MCUevaluation and first installation.The RX<strong>11</strong>1 Group of MCUs issoftware compatible with theRX600 and RX200 Series, providinggreater flexibility and an easy migrationpath to higher-performanceMCUs. The RX<strong>11</strong>1 MCUs are availablein low pin counts ranging from36 to 64 pins and 16 kbytes to 128kbytes of embedded flash memory.As part of the RX family, the newMCUs also feature a compatibleinstruction set, hardware andsoftware tool set, peripherals, andhardware safety features to complywith several safety standards.Renesas provides a comprehensivedevelopment ecosystemfor the RX series, including anEclipse-based IDE, as well ascompilers, debugger emulators,code generation, and flash programmers.The RX<strong>11</strong>1 devices aresupported by IAR Systems’ EWRXtool chain compiler and IDE. IARSystems will provide the 64-kbytefree version of its EWRX tools tosupport all RX devices, includingthe new RX<strong>11</strong>1 MCUs.Samples of the RX<strong>11</strong>1 devicesare expected to be available inJuly. Mass production is scheduledto begin in September.—by Nick Flaherty▶Renesas Electronics Corp,am.renesas.com16 EDN | MAY <strong>2013</strong> [ www.edn.com]
Analog Devices, MathWorks offerengineering students low-cost learning platformAnalog Devices has introduced alow-cost hardware-software solutionfocusing on circuit testing anddesigned for the engineering educationmarket. The solution combines Math-Works’ MATLAB software and AnalogDevices’ Digilent Analog Discovery designkits, enabling students to experimentquickly and easily with advanced technologiesand build, test, and analyze real-world,functional analog design circuits anytime,anywhere, for the price of a textbook.“The combination of MATLAB and theAnalog Devices Digilent design kits providesa very flexible, powerful learningsolution,” says Kathleen Meehan, associateprofessor in the Bradley Departmentof Electrical and Computer Engineeringat Virginia Tech (Blacksburg, VA). “I don’tneed to maintain a traditional large lab formy engineering students. Instead, studentscomplete experiments after class,where and when they want, with the analogdesign kit and analyze the data and writelab reports with MATLAB.”MATLAB and the Data Acquisition ToolboxSupport Package for Analog Discoveryhardware allow students to acquire signalsdirectly from the Analog Discovery as wellas filter and analyze data. This integrationallows students to develop a deeperunderstanding of the circuits they are buildingand reinforces MATLAB skills they arealready learning in other classes.Each Analog Discovery is the size of adeck of cards and features two oscilloscopes,two waveform generators,two power supplies,and a logic analyzer.The Analog Discoveryis manufacturedby DigilentInc and poweredby AnalogDevices components.The Ana-The Digilent Analog Discovery design kit,developed in conjunction with AnalogDevices, is designed to enable engineeringstudents to quickly and easily experimentwith advanced technologies andbuild and test real-world, functional analogdesign circuits right on their PCs.[ www.edn.com]log Discovery design kit costs $99. Studentscan access MATLAB by purchasinga MATLAB Student Version license orthrough a site license that may be availableWE ENGINEERProgrammable Current SensorsFor The Sustainable FutureEngineering is Our PassionEngineers solve problems. Our engineers recognize the need for a betterway to calibrate a sensor to its mechanical and electrical environment.Melexis builds a portfolio of programmable sensor ICs; enabling fine-tuningwith EEPROM calibration. Programming is done at end-of line production,normalizing assembly, material and environmental variances..Re-Programmable For Truly Sustainable ApplicationsDesign change? No worries. An end-user redesign or material changecan make today’s sensor module obsolete. Melexis Programmable Sensorsmake YOUR products re-programmable for new mechanical, electrical orenvironmental parameters or even a custom version of your product toYOUR customer.■ End-User Programmable - EEPROM calibrationfor mechanical, electrical and temperaturecompensation.■ End-Of-Line Programming - The output pin(s)multiplex as programming pin(s) for calibrationin actual operating environment.■ Support Available - Programming hardware,software and applications support available forall our innovative programmable sensors.See All Our Programmable Sensors At:www.melexis.com/calibrateWe EngineerThe Sustainable Future.from their university.—by Paul Buckley▷Analog Devices, www.analog.com▷MathWorks, www.mathworks.com▷Digilent Inc, www.digilentinc.com