32-bit microcontrollers with Bluetooth® 5 for IoT endpoint devices, system control and wireless communication achieved on a single chip

RX23W microcontrollers incorporate security functions that are vital for Bluetooth® 5.0 Low Energy (BLE) and IoT devices, as well as a wealth of peripheral functions such as touch keys, USB and CAN, enabling system control and wireless communication with devices using a single chip. RX23W MCUs have full function support for Bluetooth 5.0 Low Energy long range and mesh networking, and provide excellent reception performance.

Key Features

RXv2 core 54MHz operation (4.33 CoreMark/MHz)

1.8V to 3.6V operation

Operating temperature -40 °C to 85 °C

Program Flash Max. 512KB, SRAM Max. 64KB


  • Bluetooth Low Energy x1ch

Built-in Bluetooth 5.0-compliant RF transceiver and link layer

Supports LE 1M PHY, LE 2M PHY, LE Coded PHY (125kbps, 500kbps), LE Advertising Extensions

Built-in Bluetooth dedicated AES-CCM (128-bit) encryption circuit

  • USB 2.0 Host/Function/OTG x1ch

Full speed (12Mbps), low speed (1.5Mbps), isochronous transfer

BC (battery charger) support

  • CAN x1ch

ISO11898-1 compliant CAN, Max. 1Mbps transfer

  • SD Host I/F x1ch

SD memory/SDIO 1- or 4-bit SD bus support

Capacitive Touch Sensing

  • Self-capacitive method: Up to 12 keys supported in a 1-terminal 1-key configuration
  • Mutual capacitive method: Supports up to 36 keys in a 12-terminal matrix configuration

Enhanced analog

12-bit A/D converter ×14ch, 12-bit D/A converter ×2ch

Trusted Secure IP Lite (AES/TRNG)

Pin Count/Memory Size Lineup:

Program Flash
E2 Data Flash

Pin Count

Evaluation Platform, Reference Design and Development Tools

Target Board for RX23W

The target board for the RX23W is equipped with an emulator circuit so you can develop applications without the need for an E1 emulator/E2 emulator Lite.

Renesas Solution Starter Kit for RX23W

Out-of-the-box starter kit for developers new to the RX23W (Maximum pin count BGA85, 512KB code flash): Includes an LCD module, emulator, and other essentials.

HMI Solutions

Bluetooth Low Energy Wireless Solutions

Accelerating the IoT of embedded devices - Bluetooth Low Energy wireless solutions


Bluetooth Low Energy image

Security Solutions

Easily evaluate encryption functions to protect important key information!

You can find an explanation of orderable part numbers here.

Resources for Software and Hardware

Title Description
My Renesas Create a My Renesas account to use our tool download services, receive e-newsletter/update notifications, and take advantage of our other services.
e-learning Information for studying and learning about microcontrollers and microprocessors.
FAQ Frequently asked questions and useful hints for development.
Forum A forum and community site to share technical information, questions and opinions with others who use Renesas products.


Software Design Support

Title Description
e² studio This integrated development environment (IDE) is based on the popular combination of the open-source Eclipse IDE and its CDT plug-in that enables C/C++ language development.
CS+ This integrated development environment (IDE) can be used for coding, assembly, compiling, and simulation. CS+ is also included with starter kits.
E2 emulator Lite This entry-level on-chip debugging emulator provides functionality equivalent to that of the E1 emulator at a low price.
E2 emulator This on-chip debugging emulator has advanced features that improve the efficiency of development. In addition to the basic functions from debugging to flash programming, this emulator supports hot plug-in and external triggers as standard items. This emulator also helps to reduce development time by downloading at high speeds (compared to the E1 emulator) and the ability to work in combination with various solutions such as the tuning of current drawn by systems under development.
E20 emulator This on-chip debugging emulator has enhanced debugging facilities such as large-capacity tracing and real-time RAM monitoring when used in combination with RX600 and RX700 MCUs (this emulator provides debugging functionality equivalent to that of the E1 emulator for other MCUs).
E1 emulator This on-chip debugging emulator is a standard model which provides basic debugging functions (production is to be discontinued at the end of December 2019).
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