32-bit MCUs integrate high-precision analog front end

May 28, 2019 //By Julien Happich
32-bit MCUs
Designed for manufacturing and test and measurement equipment applications, Renesas Electronics’ RX23E-A Group of 32-bit MCUs integrate a high-precision analog front end (AFE), supporting high-precision measurements of analog signals for temperature, pressure, weight, and flow.

The RX23E-A 32-bit MCUs are the first Renesas solutions to enable such signals to be measured with better than 0.1% precision without calibration. The new MCUs achieve AFE precision at a level that could previously only be achieved by combining dedicated A/D converter circuits with high-precision operational amplifier ICs. By integrating this high-precision AFE intellectual property on a single chip using the same fabrication process technology, Renesas has made it possible to implement high-precision sensor measurement, computation, control, and communications on a single chip. This allows system manufactures to reduce the number of required components, save space, and simplify system design in a wide range of equipment. The RX23E-A MCUs are based on the RXv2 core, which features operating speeds of 32 MHz, a digital signal processor (DSP), and excellent floating point unit (FPU) calculations. This allows the implementation of adaptive control using temperature data and inverse matrix calculations using 6-axis distortion data, for example for robot arm force sensors.

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