Overview
Description
The RX23E-A group microcontrollers are equipped with an analog front-end that can measure temperature, pressure, flow, and weight with less than 0.1% precision without calibration, making it ideal for high-precision sensing, test and measurement equipment. The CPU is equipped with an RXv2 core that excels in DSP/FPU operations, enabling high-accuracy measurement, control and communication with a single chip.
Features
Analog Front End Features
- 24-bit delta-sigma A/D converters: Up to 23-bit effective resolution, programmable data rate 7.6sps to 15.6ksps
- Dual 24-bit delta-sigma A/D converters (R5F523ExAxxx)
- Single 24-bit delta sigma A/D converter (R5F523ExSxxx)
- PGA: Rail-to-rail analog input, Gain 1 to 128, offset drift 10 nV/°C, gain drift 1 ppm/°C
- Voltage reference: low drift 10ppm/°C with good temperature stability
- Excitation current source: Matched programmable current source
MCU Features
- CPU: 32-bit RXv2 (32MHz), DSP/FPU for digital signal processing
- Interface: SPI x 1ch, UART x 4ch, I2C x 1 ch, CAN x 1ch
Comparison
Applications
Design & Development
Software & Tools
Sample Code
Boards & Kits
Models
ECAD Models
Schematic symbols, PCB footprints, and 3D CAD models from SamacSys can be found by clicking on the CAD Model links in the Product Options table. If a symbol or model isn't available, it can be requested directly from SamacSys.

Support
Support Communities
Support Communities
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rx23e-a t Example Using a Load Cell the evaluation was not good
https://www.renesas.cn/cn/zh/document/apn/rx23e-group-weight-measurement-example-using-load-cell-application-notes-r01an4789ej0110-rev110?language=en&r=1054386 Using the rx23e-a development board, refer to the load cell manual and demo. I bought a weight ...
Nov 13, 2023 -
RX23E-A Data Flash
Where should I find a well documented sample for Data Flash use on the RX23E-A Family? I find some sample codes, but... those are not valid or they have a lot of lakes. For example, this one of the source sample code that I found, but.... static void testmain ...
Apr 20, 2022 -
RX23E-A app note REN_r20ut4542ej0110-rsskrx23e-a_MAT_20200330 typo
In app note REN_r20ut4542ej0110-rsskrx23e-a_MAT_20200330, English version, P34, Table 4-30 J3: Communication Interface Through-Holes, The J3 pin 10 indicates it's connected to MCU pin 28. This should be pin 18. Document version: R20UT4542EJ0110 Rev.1.10 Mar.30.20
Mar 24, 2024
FAQs
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A/D Conversion Result Is Not Output Using RSSK for RX23E-A
It is necessary to update the sample software written in the microcontroller. Download the sample software from the website and write it.
Mar 31, 2021 -
About Microcontrollers on RSSK for RX23E-A
The RX23E-A group microcontrollers are equipped with an analog front end that can measure temperature, pressure, flow, and weight with less than 0.1% precision without calibration, making it ideal for high-precision sensing, test and measurement equipment. The CPU is equipped with an RXv2 core that excels in ...
Mar 24, 2020 -
Sensor Measurement Using RSSK for RX23E-A
Application note with sample software connecting RSSK for RX23E-A and sensor is posted on the website. Refer to the RSSK web page.
Mar 24, 2020