The Renesas Solution Starter Kit for RX23E-B is an evaluation tool designed for sensor measurement using the RX23E-B 32-bit microcontroller (MCU). The kit includes an RX23E-B MCU evaluation board equipped with peripherals for sensor measurements and software that can be downloaded from our website. Analog characterization can be started immediately after purchasing the kit. This kit allows developers to shorten development time and bring their products to market faster. The RX23E-B microcontroller with an integrated high-precision analog front-end (AFE) is ideal for industrial sensor equipment. Equipped with a high-speed 24-bit delta-sigma A/D converter with a maximum data rate of 125kSPS and a 16-bit D/A converter, this 32-bit MCU achieves high-speed and high-precision sensor measurement, calculation, control, and communication on a single chip.

Renesas Solution Starter Kit (RSSK) Configuration

This RSSK consists of an evaluation module equipped with the RX23E-B MCU, our Quick and Effective tool solution for AFE (QE for AFE), and a board control program that communicates with QE for AFE and controls the analog front end, A/D converter, and D/A converter.

The evaluation board is equipped with circuits for A/D conversion, thermocouple measurement, resistance temperature detector measurement, load cell measurement, and D/A converter output, supporting the evaluation of A/D and D/A converters and application evaluation using various sensors.

QE for AFE, a GUI-based support tool, can be combined with a factory board control program to set the operation of the AFE, A/D converter, and D/A converter, and to acquire and display A/D conversion results.

The kit also includes various application notes and sample programs providing developers with further guidance and support.


  • Documentation/Sample Programs
    • RSSKRX23E-B User's Manual
    • RSSKRX23E-B Renesas Solution Starter Kit for RX23E-B Quick Start Guide
    • RSSKRX23E-B Renesas Solution Starter Kit for RX23E-B Schematics, Pattern, Parts List
    • RX23E-B Group RSSKRX23E-B Board Control Program
  • Tools
    • QE for AFE
  • Related Application Notes/Sample Programs
    • Example of 4-20mA transmitter using built-in D/A converter
    • Example of weight measurement using AC excited load cell
    • Design and weight measurement of tiny board for digital load cell
    • Design and measurement of small board for 6-axis force sensor

The board control program binary file written at the factory is included in the RSSKRX23E-B Board Control Program.


  • Equipped with an RX23E-B 32-bit MCU with software prepared for evaluation
  • Includes peripheral circuits necessary for sensor measurement
    • Reference junction compensation circuit required for thermocouple measurement
    • Supports 3-wire and 4-wire resistance temperature detector measurement
    • Supports bridge sensor measurements such as for strain gauges
  • Easy evaluation with QE for AFE
    • Various AFE parameters can be changed
    • A/D conversion result display function (time waveform, histogram)
    • Digital filter frequency characteristic display
  • Provides sample program for 4-20mA communication, including thermocouple measurement and resistance temperature detector measurement for reference junction compensation (sample program can be downloaded from our website)
  • Sample program for load cell measurement by AC excitation
  • E2 emulator or E2 emulator Lite (sold separately) can be directly connected
  • Software development is possible using only a USB power supply
  • Plug-in terminal block for analog input and miniature thermocouple connector
  • RS-485 with CAN driver IC
  • Equipped with two Pmod terminals



Design & Development

Software & Tools

Software & Tools

Software title
Software type
QE for AFE: Development Assistance Tool for Analog Front End
This development assistance tool supports the development of embedded systems to perform high-precision sensing for microcontrollers with built-in analog front-end (AFE). [Plugin for Renesas IDE "e2 studio"] [Standalone Version] [Support MCU/MPU:RA, RX]
Solution Toolkit Renesas
E2 emulator [RTE0T00020KCE00000R]
On-chip debugging emulator. Also available as a flash memory programmer. [Support MCU/MPU: RA, RE, RH850, R-Car D1, RL78, RX, RISC-V MCU]
Emulator Renesas
E2 emulator Lite [RTE0T0002LKCE00000R]
On-chip debugging emulator. Also available as a flash memory programmer. [Support MCU/MPU: RA, RE, RL78, RX, RISC-V MCU]
Emulator Renesas
3 items

Software Downloads

Type Title Date
Board Description File ZIP 1 KB
Board Description File ZIP 1.90 MB
2 items

Sample Code