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Ultra-low-power 32bit MCUs pack zero-wait Flash

Posted: 07 Mar 2011     Print Version  Bookmark and Share

Keywords:32bit microcontroller  RX MCUs  battery-operated 

Renesas Electronics Corp. has extended its RX MCU family with the first members of the RX2000 series of 32bit microcontrollers (MCUs) with embedded flash memory. This helps it penetrate into the realm of ultra-low power and wide-voltage range operation.

Two years ago Renesas Electronics launched the RX600 series of extreme high-performance and high-connectivity 32bit MCUs, and now the RX family is extended by the RX200 series down this vital path. The RX200 MCUs aim to satisfy the increasing demand for ultra-low power, low-voltage embedded MCU applications such as smart meters, portable healthcare devices, smartphones, intelligent sensors, climate control, and most all portable battery-operated devices. Additionally, new MCUs also target appliances by operating up to 5.5V, by complying with the IEC 60730 appliance safety standard, and by having specialised motor control capabilities.

The RX200 and RX600 series of MCUs share the same powerful 32bit CISC RX CPU core. They also share many common peripherals for easy migration within the RX Family, re-using the same firmware, compiler, debugger and development environment.

The first MCUs to debut in the RX200 series are in the RX210 Group, all with a maximum operating frequency of 50MHz, producing 78DMIPS with zero wait-states from flash memory while operating from 2.7V to 5.5V and consuming just 0.21mA/DMIPS at 50MHz. A special multi-stage internal voltage regulator scales down power consumption allowing the RX210 to operate up to 32MHz at just 1.8V, and up to 20MHz at just 1.62V. Internal flash memory may be erased and reprogrammed, and internal analogue peripherals continue to function even when the operating voltage is as low as 1.62V.

The RX200 MCUs target low-power and portable battery-operated applications with their extreme power efficiency while active, and minimal current consumption while in deep standby at only 1.3µA with the real-time clock (RTC) running and able to wake up the CPU at programmed intervals if desired.


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