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32bit MCUs target inverter control systems

27 Apr 2015

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High power efficiency for lower power consumption in inverter products

The RX23T MCUs feature the RXv2 core (4.0 CoreMark/MHz (target), among the best in the industry) and digital signal processing (DSP) functionality, allowing operation processing to be maintained with no loss of real-time responsiveness when performing inverter control (sensor-less vector control), even when the CPU is not running at high speed. In addition, current consumption in low-power mode (data retained in RAM) is only 450nA (typ.). This power efficiency is among the best in the industry, enabling inverter products with lower power consumption.

Support for 5V peripheral I/O

As systems become more power efficient and the power supply voltage drops, it becomes necessary to take steps to prevent electromagnetic noise from peripheral components from adversely affecting high-precision control because MCUs become more susceptible to such interference when the power supply voltage is low. Supporting a 5V power supply voltage, the RX23T group MCUs are less vulnerable to inverter drive noise than MCUs using a 3V power supply, reducing the number of components required to reduce the noise effects.

Samples of the RX23T MCUs are available in package pin counts ranging from 48 to 64 pins and on-chip flash memory capacities ranging from 64KB to 128KB for a total of 12 individual products. Pricing varies depending on memory capacity, number of pins, and package. For example, the R5F523T3ADFL with 64KB of flash equipped in a 48-pin QFP package is priced at $1.25 per unit in 10,000-unit quantities. Mass production is scheduled to begin in August 2015 and is expected to reach a scale of 500,000 units per month in July 2016. Integrated development environment (CS+, e2 studio) and code generator support tools are scheduled to be available from June 2015. Renesas also plans to expand the lineup of motor control application notes and solutions. Pricing and availability are subject to change without notice.

Renesas MCUs for inverter control systems

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