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Low-power MCUs provide up to 1MB embedded Flash

Posted: 04 Mar 2011     Print Version  Bookmark and Share

Keywords:MCUs  low-power  portable 

Renesas Electronics Corp. unveils eight new 32bit V850 MCUs in the existing J series designed with high density memory from 768KB flash/80KB RAM to 1MB flash/80KB RAM targeting low power, portable applications such as smart meters, health care equipment and other portable apps.

32bit V850 MCUs

Four of the new MCUs are equipped with USB 2.0 function interface to support communication. The V850ES/Jx3-L MCUs feature 1MB flash and 80KB RAM memory, making them feasible for smart meters that are subject to a regulatory power budget. Yet with more communication radios and more complex software, every component, including the MCU, has to be lower power to keep the system under budget. The increasing communication software can be adequately supported by the larger flash memory.

Health care systems, especially portable measurement and monitor devices, such as blood glucose meters, can take advantage of the low power to extend battery life and use the large flash memory for data storage. USB support enables these health care systems to support patient-doctor information exchange, such as the Continua Alliance standard. Moreover, the 32bit processing power can support graphic computation for different displays, from segmented LCD to dot matrix and OLED.

Software complexity continues to increase in many applications. Product designers are faced with a difficult design decision between extending design cycle to reduce software size and paying for extra external memory to shorten design time. The high density Flash eliminates this design dilemma. These V850 MCUs with up to 1MB Flash can support many applications without resorting to external memory.

Renesas Electronics' V850ES/JG3-L MCUs address these needs, and even in the J Series, these new products reduce the normal operating current by 50 per cent from the company's existing products, achieving industry-leading low power consumption while providing large internal memory capacities.

The MCUs offer high-speed processing at only 0.9mW per 1MIPS power consumption at 20MHz operation. They achieve 0.7µA current consumption in standby mode even with a real-time counter operating. And since they support 2V low-voltage operations when operating at 2.5MHz, they can contribute to longer battery operating times in portable information terminals and other battery operated electronic equipment.

The devices also offer easy reuse of existing software assets from other J Series devices.

Samples of Renesas Electronics' new V850ES/JG3-L MCUs are available now. The sample prices of these new products vary depending on memory capacity and package type.

For example, the MCU equipped in a 100-pin LQFP package with 1MB of flash memory is priced at Rs.350.88 ($7.65) per unit. Mass production is scheduled to begin in July 2011 and is expected to reach a combined volume of 30,00,000 units per month with all 8 products by FY2012.





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