Renesas Electronics RX23E-B MCUs

Renesas Electronics RX23E-B MCUs feature an enhanced built-in analog front end (AFE) designed for industrial sensor equipment. The Renesas Electronics RX23E-B has a 24-bit delta-sigma A/D converter that delivers improved high-speed and noise performance, with a maximum data rate of 125kSPS. The RMS noise is reduced to approximately 1/3 of RX23E-A, allowing precise and rapid measurements of strain, temperature, pressure, flow, current, voltage, etc. Additionally, RX23E-B integrates a 16-bit D/A converter and a +/-10V high-voltage analog signal input circuit, minimizing the bill of materials (BOM) and footprint.

Powered by an RXv2 core, the CPU ensures excellent digital signal processing (DSP)/floating-point unit (FPU) operation, enabling high-precision measurement, control, and communication on a single chip.

Features

Analog front end (AFE)
- 24-bit delta-sigma A/D converter with integrated programmable gain amplifier, up to 24-bit effective resolution, data rate 3.8SPS to 125kSPS, 4nV/°C offset drift, 1ppm/°C gain drift
- 5V analog inputs, eight differential inputs, 16 single-ended inputs
- ±10V analog inputs, two differential inputs, four single-ended inputs
- 16-bit D/A converter, DNL = ±1LSB, INL = ±5LSB
- Low-temperature drift of 10ppm/°C with excellent temperature stability reference voltage source
- Matched programmable current source, ideal for measuring 3-wire resistance temperature detectors excitation current source

MCU component
- 32-bit RXv2 core, operating frequency 32MHz, digital signal processing can be implemented with DSP instructions and FPU
- SPI x 1 channel, UART x 7 channels, I²C x 1 channel, CAN x 1 channel communication interface

Applications

Industrial automation
Weight scale and strain gauge
Pressure/flow control

PLC analog input module
Data acquisition lab instrument

Renesas Electronics RX23E-B MCUs

Features

Applications

Block Diagram

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