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32bit MCUs achieve 1.65 MIPS/MHz processing

Posted: 27 Mar 2009 ?? ?Print Version ?Bookmark and Share

Keywords:microcontroller? MCU 32bit? CISC CPU architecture?

RX610 32bit MCU

Renesas Technology Corp. has developed the first RX family microcontroller products built around the new RX CPU. The RX CPU implements CISC architecture that integrates and significantly extends the capabilities of the company's existing 16- and 32bit MCU products, while providing compatibility.

The RX family is being rolled out in two series: the RX600 series, designed for high speed and superior performance, and the RX200 series, designed for low-voltage operation and low power consumption.

The eight devices in the 32bit RX610 group, which belongs to the RX600 series, are designed for applications such as high-end office equipment and digital consumer products that demand the ability to run large-scale programs rapidly and at a high performance level.

The devices deliver strong 1.65 MIPS/MHz processing performance while operating at speeds up to 100MHz. Moreover, the new MCUs consume only 0.03mA/MHz CPU core current. This translates into approximately twice the performance of previous Renesas 32bit CISC MCUs when running at the same operating frequency, so programs can execute rapidly and efficiently.

RX610 MCUs have up to 2Mbtye of on-chip flash memory that can be accessed at 100MHz in a single clock cycle to maximize code execution. They also provide 32Kbyte of data flash memory with a background operation function that enables data to be written at the same time a program is executing.

Compatibility, low power
In addition to peripheral functions with an established track record in earlier Renesas products, the RX610 provides enhanced functions to meet specific requirements. The peripheral functions with an established track record include a timer pulse unit suitable for various applications, a compare-match timer, and an 8bit timer; a data transfer unit for efficient data transfer, and serial communication interface; a 10bit ADC and 10bit DAC; and a CRC circuit. These peripheral functions maintain compatibility with existing Renesas products and simplify migration from them to the RX600 series.

The ADC has been enhanced with a faster conversion speed of 1?s and an expanded configuration of four units (total 16 channels [four channels per unit]). Each unit can perform high-speed conversion simultaneously with the others, enabling effective processing of data from multiple sensors. There is also an I?C bus interface supporting high-performance communication between devices, a new peripheral function.

In addition, the current consumption of the RX610 group is about 50mA (typ.) when operating at 100MHz. The resulting current consumption per 1MHz of operating frequency is less than half that of comparable earlier Renesas products. The RX610 Group also provides four powerdown (low-power) modes, making it possible to reduce system power consumption substantially by selecting the appropriate mode to match the application.

The new chips, which come in 144-pin LQFP and 176-pin BGA packages, integrate an extensive range of built-in legacy, enhanced and new peripheral functions for system design flexibility. In addition, the RX610 MCUs achieve low-power consumption operation with 0.5mA/MHz product power. To help customers shorten the development cycles of new embedded systems, Renesas and third-party suppliers support the MCUs with a variety of hardware and software development tools.

Pricing for the RX610 group in 144-pin LQFP package starts at 930 yen ($9.49) each in 10,000 units. Pricing for the RX610 group in 176-pin BGA package starts at 960 yen ($9.80) each in 10,000 units.





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