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Flash mcus have low power consumption

Renesas Technology Europe has announced the release of the R8C/Mx Series of low pin count mcus with on chip flash memory. According to Renesas, it offers power consumption among the lowest in the industry and improved functions including timers for applications requiring low power consumption.

The R8C/Mx Series is a new addition to the R8C Family of flash mcus. The new series combines low power consumption with a low pin count. The first products to appear will be the R8C/M11A, with a 14 pin package, and the R8C/M12A, with a 20 pin package. They will comprise a total of six types with 18 products, and sample shipments are scheduled to begin in March 2010. The current consumption during operation (active current) of the R8C/M11A and R8C/M12A is 150 µA per 1MHz, a reduction of approximately 60% from the 350µA per 1MHz of comparable earlier Renesas Technology products. The standby current is under 1µA, approximately half that of earlier Renesas Technology products, making R8C/Mx Series products suitable as sub-mcus in larger systems with extensive standby time, such as consumer products and office equipment, where they can contribute to improved energy efficiency overall. R8C/Mx series mcus are equipped with on chip peripheral functions, including timers and comparators, required by compact electrical household appliances which require sensor detection and control functionality. The R8C/Mx has up to six ad converters with 2.15us conversion time and two result registers. Two comparators at 100ns have compare output functions and can be connected to the 16bit timers. According to Renesas, this makes it possible to handle in hardware processing previously done by the cpu using software, for example, using a comparator for direct control of a timer based on sensor input. The 3 x 16bit on chip timers support three phase pulse output. All Mx devices are pin compatible and have several high current drive port pins as well as safety function, such as read back I/O pin. The on chip peripheral I/O mapping controller enables reassignment of pin functions.