Renesas Unveils H8/38602F Tiny Super Low Power Microcontrollers

9/13/2004 - Renesas Technology Europe has announced the H8/38602F, the first of its new Tiny Super Low Power microcontrollers. The device uses a high performance 16-bit H8/300H CPU core that offers extremely low power consumption and includes 16 kbyte of on-chip single supply flash memory. The chip has been developed for the next generation of battery and line-powered intelligent sensor applications, offering low power consumption, low cost and easy memory reprogramming without any additional special circuitry, which reduces customer inventory.

Intelligent sensors are often required to communicate despite minimal power consumption, so the H8/38602F supports many methods of low power communication. These include a USART that can communicate while using a 32 kHz oscillator, and built-in IrDA capability. A unique design of timer, along with the two on-board analogue comparators, also provide solutions for a variety of the power and data over two wire communications schemes that are commonly used.

The H8/38602F has an operating voltage of 1.8 to 3.6 V. Its fast oscillator start-up time makes it ideal for applications that need to spend the majority of time asleep in the lowest power modes and then awaken to take readings or to communicate. Water and gas meters, as well as smoke and movement detectors, are typical examples. A high resolution six channel 10-bit A/D converter with a wide sampling range along with the two on-chip analogue comparators also make the device ideal for these applications.

The microcontroller features an asynchronous timer and 32 kHz clock oscillator with an on-chip Real Time Clock. This makes it suitable for battery-powered applications that count pulses and need to keep a clock function with an average power consumption of around 500 nA. The on-chip watchdog timer with integrated oscillator also makes the device easy to use in systems where reliability is an issue.

The H8/38602F takes 1.1 mA running at 2 MHz, 7 mA in sub-active mode and 0.1 mA in standby mode. The device offers a complete peripheral set that includes: an on-chip oscillator; a powerful two channel 16-bit timer; an asynchronous 16-bit timer; an 8-bit timer; a watchdog timer with its own on-chip oscillator; a Real Time Clock; a high speed USART; an I2C or SPI interface; a 10-bit A/D converter; two analogue comparators; 19 I/O pins and an integrated power-on reset circuit. It also features 512 to 1 kbyte SRAM.

The device is available immediately and is supported by the Renesas E7 in-circuit debugger. It is also available with 8 to 16 kbytes of on-chip ROM.

About Renesas Technology Corp.
Renesas Technology Corp. designs and manufactures highly integrated semiconductor system solutions for mobile, networking, automotive and PC and Audio Visual markets. Established on April 1, 2003 as a joint venture between Hitachi, Ltd. (TSE:6501, NYSE:HIT) and Mitsubishi Electric Corporation (TSE:6503) and headquartered in Tokyo, Japan, Renesas Technology is one of the largest semiconductor companies in the world and the number one microcontroller supplier globally. Besides microcontrollers, Renesas Technology offers system-on-chip devices, Smart Card ICs, mixed-signal products, flash memories, SRAMs and more.

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