Ultra-Compact 32-Bit Microcontrollers with Touch Sensing and Voice Recognition Capabilities for Contactless Operation


ByRajni Setia 0

Renesas 32-Bit RX671 MCUs

Renesas Electronics has introduced 32-Bit RX671 microcontrollers, the single-chip solution for delivering high performance and power efficiency with HMI functions for contactless operation. Suitable to be used in a wide range of space-constrained applications that require advanced functionality, power efficiency, and compact size, the RX671 MCUs come with 2 MB of flash memory in a 64-pin TFBGA package measuring only 4.5 mm × 4.5 mm.

The new MCUs are the part of Renesas’ mainstream RX600 Series and are built around an RXv3 CPU core operating at 120 MHz and each device integrates flash memory supporting fast read access at a clock speed of 60 MHz thereby delivering superior real-time performance with a CoreMark score of 707. Besides, the power efficiency of these microcontrollers is among the best in the class at 48.8 CoreMark/mA.

Optimized for contactless applications, these microcontrollers integrate a capacitive touch sensing unit that combines high sensitivity with excellent noise tolerance thereby making the devices capable of being used to implement contactless proximity switches. Additionally, the serial sound interface can be used to connect digital microphones that support voice recognition over long distances.

Besides RX671 microcontrollers, Renesas also introduced two new evaluation boards that make it easy for the users to evaluate the RX671 without the need for the separate debugger. Both the boards are equipped with connectors to the Wi-Fi Pmod Expansion Board (RTK00WFMX0B00000BE) for easy evaluation utilizing wireless network connectivity. 

The RX671 Group of MCUs is available in 64-, 100-, and 144-pin LFQFP packages; mass production of the 48-pin HWQFN, 64-pin TFBGA, 100-pin TFLGA, and 145-pin TFLGA package products is scheduled to start in Q1 2022. 

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