HITACHI'S H8/38004 SUPER LOW POWER MICROCONTROLLER - SLP Technology Lowers Power Consumption - Instant Standby

Sep 29, 2026

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February 17, 2003 EDP Weekly IT Monitor highlights Hitachi’s announcement of the H8/38004 8-bit microcontroller using Super Low Power (SLP) technology to extend battery life. The MCU runs at voltages down to 1.8 V and draws about 200 µA at 1 MHz during active operation, with further reduction to 1.2 µA in 32 kHz watch mode. It supports up to 32 KB flash or mask ROM and up to 1 KB RAM, targeting battery-driven measuring systems.

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HITACHI'S H8/38004 SUPER LOW POWER MICROCONTROLLERSLOW CONSUMPTION INSTANT BY MODE

Power modes and consumption levels

Memory and device positioning

Design features for efficiency and system reliability

Development and debug tools

TOSHIBA OFFERING TWO NEW RETAIL NOTEBOOKS

Notebook model lineup and pricing

Storage and multimedia specifications

EDP Weekl The Leading Information Technology News Summary--Now In Its 44Year Vol.44 No.7 February 17,2003 # HITACHI'SH8/38004SUPERLOWPOWERMICROCONTROLLERSLOWCONSUMPTIONINSTANDBY MODE Hitachi Semiconductor(America)Inc.hasannounced the H8/38004 series 8-bit device withSuper Low Power(SLP)technology that extendsbattery life in portable systems.The new MCUoperates with voltages as low as 1.8 volts(V)andconsumesjust200microamperes(uA)at 1megahertz(MHz)when theCPU andall peripherals are active.Thedevicecan furtherreducepowerconsumptionto 1.2uAbyusinga32kilohertz(KHz)watchmode. Thelow-cost 64-pin device is amember ofthe H8/300L SLP series and is a pin-compatibleevolutionofthepopularH8/3802MCU.TheMCUprovides up to 32 kilobytes(KB)of flash or maskROM and up to 1KB of RAM. According to Hank Pawlowicz,productmarketing manager ofthe system LSIbusiness unit,HitachiSemiconductor(America)Inc.,"Hitachihasdesigned this low-cost chip with SLP technologyspecificallytomakeportabledesignsmorepractical,popular and profitable.The H8/38004 is ideal forglucosemeters,heart-ratemonitors,andothertypesof battery operated measuring instruments andembedded systems because it enables engineers tomaximize the time between battery recharges orreplacements.” Systemdesignerscantakeadvantageofseven(Continued on Page2) Page 1 # TOSHIBAOFFERINGTWONEWRETAILNOTEBOOKS Toshiba's Computer Systems Group,adivisionofToshiba AmericaInformation SystemsInc.,has introduced the Satellite 2455-S305 andSatellite 1955-S805to itsretail lineupofnotebookPCs. Startingat$2,099,thenew products provideToshibacustomerswithmorechoices whenitcomestorecordingDVDsandbackinguplargeamounts ofdataon theirmobilePC. (Continued on Page 2) ## NDC TO PROVIDE WLAN MODULEODM SERVICES.…… …2 POCKETDISK OFFERS FORM,FUNCTION AND PRICE INPORTABLE USB FLASH DRIVES 3 ## CISCO INTRODUCES NEXT-GENOF IP COMMUNICATIONS SOLUTIONSFOR THE CONTACT CENTER… …4 IBM,DASSAULT AND ENGINEERING.COM ADVANCEKNOWLEDGE AMONG ENGINEERINGSTUDENTS… ………… ………………….5 PROMISE TECHNOLOGY BOOSTS PERFORMANCE OF FOUR-DRIVE ULTRA ATA/133 RAID SYSTEMS… …6 PEOPLESOFT CERTIFIES QUEST’S SHAREPLEX INTEGRATION WITH PEOPLESOFT APPCONNECT……………………7 GROOVE SHIPS‘PRODUCTION READY ADD-IN TOOLKIT FOR MICROSOFT VISUAL STUDIO.NET..……………… ……7 HITACHI(Continuedfrom Pagel) power-downmodestomaintainminimumfunctionalityuntilmoreprocessingpowerisneeded.When activemodeisneeded,theMCU'sfast-startsystemoscillator,whichstabilizesinashort20microseconds(us)froma cold start,quickly and efficiently energizes theresources needed for the task to be performed.Additionally,other key MCU design features alsocombine to enhance the power efficiency of theapplication.Forexample,the 16-bit asynchronousevent counter(AEC)canbeusedto countinput pulseeven when theCPUclocks are turnedoff. TheF-ZTATflashH8/38004versionissingle-voltageprogrammableforsimplifiedprogramminginproduction andeasy fieldsoftwareupdates.AllH8/38004 MCUs provide an on-chipLCD controller,asynchronousevent counter,8-bittimer,16-bittimer,2-channel 10-bit pulse width modulation(PWM)timer,watchdogtimer,4-channel 10-bitA/Dconverter,serial communicationinterface,clockoscillator,32kilohertz(KHz)sub-clock oscillator and interruptcontroller. For designs that need to generate an analogsignal output,the H8/38004’s PWM timer can beused with an external filter to provide the requisitedigital-to-analog(D/A)converterfunction.TheMCU'swatchdog timer can be used to safeguard systemoperationbyautomatically resettingtheMCUintheevent of a program runaway or lock up.Systemreliability can alsobeenhancedbyusing theA/Dtomonitor battery status and warn the user of low-voltageconditions. To help shorten system design and debugcycles,Hitachi and the many vendors in the H8 February 17,2003 support community offer hardware and softwaredevelopmenttools forH8/38004MCUs. Hitachi's support products include aninexpensiveBoard-in-a-Bagevaluat

FAQs

What power advantages does the H8/38004 SLP technology provide?

It operates down to 1.8 V and consumes about 200 µA at 1 MHz when CPU and peripherals are active, and as low as 1.2 µA in 32 kHz watch mode.

What memory capacities are available on the H8/38004?

It provides up to 32 KB of flash or mask ROM and up to 1 KB of RAM.

Which application areas are highlighted for this microcontroller?

The document cites glucose meters, heart-rate monitors, and other battery-operated measuring instruments and embedded systems.

Sep 29, 2026

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