Overview
Description
RX23W microcontrollers incorporate security functions that are vital for Bluetooth® 5.0 Low Energy (LE) 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.
In addition, the RX23W lineup includes a module with a built-in antenna and oscillator. It enables the use of many MCU peripheral function pins while having the industry’s smallest footprint for a module. This module has obtained Radio Law (Japan), FCC/ISED (North America), and CE (Europe) certifications, saving users the trouble of designing an RF circuit or obtaining certifications on their own, shortening time to market.
Features
- RXv2 core 54MHz operation (4.33 CoreMark/MHz), single-precision FPU
- Operating voltage: 1.8V to 3.6V
- Operating temperature: -40 °C to 85 °C
- Program Flash up to 512KB, SRAM up to 64KB
- Communications
- Bluetooth Low Energy (one channel)
- 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 (one channel)
- Full speed (12Mbps), low speed (1.5Mbps), isochronous transfer
- BC (battery charger) support
- CAN (one channel)
- ISO 11898-1 compliant CAN, up to 1Mbps transfer
- SD Host I/F (on channel)
- SD memory/SDIO 1- or 4-bit SD bus support
- Bluetooth Low Energy (one channel)
- 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
- Enhanced analog: 12-bit A/D converter (14 channels), 12-bit D/A converter (2 channels)
- Trusted Secure IP Lite (AES/TRNG)
- Module package size
- 6.1mm × 9.5mm, 0.5mm pitch (83-pin LGA)
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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SOFTWARE STANDBY MODE in RX23W
Hello Everyone, What is the minimum power consumption in the software standby mode in RX23W? How to measure current consumption on the target board for RX23W. Thanks.
Jan 11, 2023 -
RX23W BLE GCC sample project
Dear Rx Family, There is a document and that document shows that RX23W is now supported with the RX GCC compiler and also FreeRTOS with the GCC compiler. I created a simple Blinky project with a GCC compiler and also freeRTOS project. I could not find support for BLE. Now ...
Jul 2, 2020 -
RX23W: Serial Bluetooth Communications
Hey everyone, we are currently trying to add bluetooth to one of our products and we ended up choosing a RX23W. What we are trying to achieve is basically a Bluetooth to CAN Bridge. On a previous prototype we used a module from laird that was connected to the uart ...
May 26, 2021
FAQs
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Bluetooth® 5.0 Low Energy Functions Supported by the RX23W
The RX23W supports all Bluetooth® 5.0 Low Energy functions such as LE Long Range and Mesh Networking.Bluetooth® Low Energy for RX Family https://www.renesas.com/us/en/application/technologies/bluetooth-low-energy/bluetooth-low-energy-rx Bluetooth ...
Nov 16, 2021 -
The Features of RX23W
Bluetooth® Low Energy industry-leading receiver sensitivity level and low power consumption, high performance CPU and advanced peripherals, robust security and easy-to-use development tools.
Mar 6, 2020 -
Flash ROM Writing of Data During RX23W Operation
Writing is possible. The RX23W has a 384K / 512K bytes user area (ROM) and an 8K bytes data area (E2 DataFlash). The user area and data area can be rewritten by the flash rewrite routine in the user program. However, when rewriting the user area, it is necessary to ...
May 25, 2020
Videos & Training
Introducing high performance RX23W BT5.0 enabled MCU, ideal for system controller and provides robust security for IoT connected devices.