32-bit Microcontroller Features Performance Enhanced AFE for Superior Sensor Interfacing

01 December 2023

The RX23E-B from Renesas is the latest addition to the company’s portfolio of 32-bit microcontroller units. Alongside its RXv2-based data processing core, key elements incorporated into this device are its advanced signal chain support capabilities.

The accelerated speed, highly accurate analogue front end (AFE) enables sensor system connection with maximum effectiveness (dealing with parameters like strain, force, temperature, pressure, flow rate, current, voltage, etc.). A 24-bit delta-sigma analogue-to-digital converter (ADC) delivers a 125kSps sampling rate (that is 8x times faster than the company’s RX23E-A microcontroller). There is also a digital signal processing (DSP) resource and a floating point unit (FPU), plus a 16-bit digital-to-analogue (DAC) converter for measurement adjustment and self-diagnosis purposes. Among the uses for this new microcontroller will be test instrumentation and robotics. 100-pin BGA and 40-pin QFN package versions are available.

“With the addition of the RX23E-B which comes with an AFE sensor interface, we can now serve a broad range of sensing applications from mid- to high-end systems,” said Sakae Ito, Vice President of the IoT Platform Business Division at Renesas. “We will continue to extend our product options to meet the growing needs of battery-powered and wireless sensors that demand low power consumption.

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