MCUs aimed at energy efficient motor control applications

Renesas Electronics has introduced the RX23T group of MCUs, designed to enable precise control of inverter circuits employed in energy-efficient electric home appliances, industrial machinery and office equipment.


Based on the RX core, the 32bit MCUs are said to be ideal for building high performance inverter control systems for applications such as DC motor control in energy-efficient electric home appliances such as refrigerators, air conditioners, washing machines, vacuum cleaners, and fans; entry-level to mid-range industrial equipment such as general-purpose inverters, electrical tools, and drones; and office equipment. The functions are optimised for inverter drive control, including an on chip floating point unit that reduces code size and development time by 30%.

RX23T MCUs have been developed by Renesas in response to the need for more compact, highly efficient, and quieter motors in a range of applications, as well as for more precise position control without increased system cost. The MCUs provide an optimised subset of the functions available with RX62T MCUs, which Renesas claims were designed specifically for use in three-phase inverter drive applications.

RX23T MCUs are available in 12 variants, which packages ranging from 48 to 64pins and with flash capacities ranging from 64 to 128kbyte. Samples are available now and volume production is scheduled to begin in August 2015.