Bluetooth Low Energy (LE) is a low energy mode of Bluetooth wireless technology that has an effect on power consumption especially for battery-operated applications. The attractive point of LE lies in that it can operate while being connected to applications for smartphones and tablets. Renesas Bluetooth LE solutions provide smart connections with the lowest level of power consumption in the industry and can be used in applications such as healthcare and fitness devices, home electric appliances and RFID tags that use beacons to connect them with smartphones at low power consumption without wires.

Included in Renesas' Bluetooth LE product portfolio is the RA4W1 32-bit microcontroller (MCU) solution that offers built-in security functions essential for Bluetooth 5.0 LE and IoT devices, as well as a wealth of peripheral functions such as touch keys, USB and CAN, and it provides system control for devices and wireless communication on a single chip.

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Bluetooth Logo Medium

RA4W1 32-bit MCUs

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RA4W1 32-bit MCUs
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RA4W1 MCU Chip

The RA4W1 MCU incorporates a dedicated to Bluetooth high-precision low-speed on-chip oscillator, eliminating the need for external matching circuits and external capacitors.

Renesas RA4W1 Group User's Manual: Hardware (PDF | English, 日本語)
RA4W1 32-bit microcontrollers

To purchase the RA4W1 MCU, contact your local Renesas sales office or distributor.

RA4W1 MCU Group Evaluation Board (EK-RA4W1)

The EK-RA4W1 incorporates an emulator circuit that can be used for your own application design without the need for further tool investments. This product provides through-holes for pin headers that allow access to all MCU signal pins, allowing for easy prototyping with a breadboard. You can begin evaluation immediately after purchasing an evaluation board using software which can be downloaded from our website.

This evaluation board is best suited for the following purposes.

  • Evaluation of Renesas’ RA4W1 device
  • Evaluation of Bluetooth LE functions and performance
  • Use for customer's principle prototype
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EK-RA4W1 Evaluation Board

EK-RA4W1 User's Manual (PDF | English, 日本語)
RA4W1 MCU Group Evaluation Board (EK-RA4W1)

Bluetooth Low Energy Protocol Stack for the RA Family (FSP)

The RA4W1 Group's Flexible Software Package (FSP) provides a protocol stack that complies with the Bluetooth v5.0 LE specification. By combining with the Bluetooth specification-compliant profile provided by the development support tool QE for BLE, you can easily develop applications that utilize the Bluetooth Low Energy communication function of the RA4W1 group.

Bluetooth qualified 56 types of standard profiles/services are available.

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Bluetooth Low Energy Protocol Stack for the RA 32-Bit MCUs

QE for BLE (RA)

The QE for BLE is a dedicated tool for developing embedded software in systems that support the Bluetooth Low Energy protocol stack. This solution toolkit runs in the e2 studio integrated development environment (IDE). The combination of the e2 studio and QE for BLE makes it easy to test the communications features of Renesas’ RA4W1 Bluetooth LE microcomputer, thus reducing development periods for products being placed on the market.

The standard profiles are generated from this tool. It can also design and generate a custom profile.

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QE for BLE for RA MCUs

BTTS Windows Application

In the survey/evaluation phase of the development process, new LE functions, API execution procedures and parameters of an API can be learned by evaluating the functions and performance of Bluetooth LE supported by the RA4W1 using the Bluetooth Test Tool Suite (BTTS).

In the certification phase of the device, it can be used as a GUI tool to operate the device under test (DUT) in the Radio Law certification test.

Bluetooth Low Energy MCU Bluetooth Test Tool Suite operating instructions Application Note - Sample Code (ZIP)

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BTTS Windows Application for RA4W1

Application Example

Renesas offers environmental sensor network solution control sample software for buildings/HVACs using the RA4W1 32-bit MCU, ZMOD4410 indoor air quality sensor (IAQ), and the HS3001 humidity and temperature sensor.

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Environmental Sensor Network Solution

Documentation & Downloads

Title Other Languages Type Format File Size Date
User Guides & Manuals
EK-RA4W1 User's Manual 日本語 Manual PDF 923 KB
Renesas RA4W1 Group User's Manual: Hardware 日本語 Manual PDF 16.39 MB
Application Notes & White Papers
- EK-RA4W1 Example Project Bundle Application Note PDF 74 KB
- QE for BLE[RA,RE] Sample Projects and Dedicated Programs for the R_BLE Scripts 日本語 Application Note PDF 2.33 MB
Bluetooth® Low Energy microcomputer Design Guidelines for a Pattern Antenna Application Note (R01AN3134EJ0104) 日本語 Application Note PDF 2.93 MB
- RA Family BLE Sample Application Application Note PDF 3.16 MB
RA Family BLE Sample Application Application Note PDF 3.16 MB
Bluetooth Low Energy MCU Bluetooth Test Tool Suite operating instructions Application Note 日本語 Application Note PDF 3.06 MB
- Bluetooth Low Energy MCU Bluetooth Test Tool Suite operating instructions Application Note 日本語 Application Note PDF 3.06 MB
- RA4W1 group Environmental sensor network solution control sample software for building / HVAC 日本語 Application Note PDF 5.09 MB
RA4W1 group Environmental sensor network solution control sample software for building / HVAC 日本語 Application Note PDF 5.09 MB
RA4W1 Group - Bluetooth Low Energy Application Developer's Guide Application Note PDF 2.55 MB
Improving the Quality of Healthcare Delivery via Bluetooth® Low Energy and the Renesas RA4W1 MCU White Paper PDF 393 KB
RA4W1 Group Bluetooth LE Profile API Document User's Manual (R11UM0154EJ0100) 日本語 Application Note PDF 314 KB
- RA4W1 Group Bluetooth LE Profile API Document User's Manual (R11UM0154EJ0100) 日本語 Application Note PDF 314 KB
EK-RA4W1 – Quick Start Guide (R20QS0015EJ0101) Application Note PDF 1.23 MB
- Public BD Address Writing Tool Application Note PDF 140 KB
- Tuning Procedure of Bluetooth Dedicated Clock Frequency Application Note PDF 1.07 MB
Tuning Procedure of Bluetooth Dedicated Clock Frequency Application Note PDF 1.07 MB
- Host Controller Interface Firmware Application Note PDF 351 KB
BLE microcomputer/module Bluetooth qualification acquisition 日本語 Application Note PDF 886 KB
Host Controller Interface Firmware Application Note PDF 351 KB
Testing for Certification of Compliance with the Radio Law (Japan) 日本語 Application Note PDF 941 KB
RA4W1 Group Guidelines for 2.4 GHz Wireless Board Design Application Note PDF 680 KB
Downloads
EK-RA4W1 Example Project Bundle - Sample Code Sample Code ZIP 3.15 MB
QE for BLE[RA,RE] Sample Projects and Dedicated Programs for the R_BLE Scripts - Sample Code 日本語 Sample Code ZIP 6.12 MB
RA Family BLE Sample Application - Sample Code Sample Code ZIP 10.29 MB
- RA Family BLE Sample Application - Sample Code Sample Code ZIP 10.29 MB
- Bluetooth Low Energy MCU Bluetooth Test Tool Suite operating instructions Application Note - Sample Code Sample Code ZIP 23.22 MB
Bluetooth Low Energy MCU Bluetooth Test Tool Suite operating instructions Application Note - Sample Code Sample Code ZIP 23.22 MB
RA4W1 group Environmental sensor network solution control sample software for building / HVAC - Sample Code Sample Code ZIP 14.67 MB
- RA4W1 group Environmental sensor network solution control sample software for building / HVAC - Sample Code Sample Code ZIP 14.67 MB
EK-RA4W1v0 - Design Package 日本語 Software ZIP 1.34 MB
Public BD Address Writing Tool - Sample Code Sample Code ZIP 137 KB
Tuning Procedure of Bluetooth Dedicated Clock Frequency - Sample Code Sample Code ZIP 5.10 MB
- Tuning Procedure of Bluetooth Dedicated Clock Frequency - Sample Code Sample Code ZIP 5.10 MB
Host Controller Interface Firmware - Sample Code Sample Code ZIP 9.90 MB
- Host Controller Interface Firmware - Sample Code Sample Code ZIP 9.90 MB
QE for BLE[RA] V1.0.0 : A Dedicated Tool for Bluetooth® low energy. 日本語 Software ZIP 9.73 MB
Other
- RA4W1 Group Bluetooth LE Profile API Document User's Manual Other ZIP 6.08 MB
RA4W1 Group Bluetooth LE Profile API Document User's Manual Other ZIP 6.08 MB
- EK-RA4W1 – Quick Start Guide Other ZIP 1.71 MB
RA4W1 Group Flyer 日本語 Flyer PDF 381 KB
Renesas RA Family of 32-bit MCUs with Arm® Cortex®-M Core Flyer 日本語 Flyer PDF 391 KB