Bluetooth® Low Energy for RL78 Family

Bluetooth® low energy

Bluetooth® Low Energy Wireless Solution to Accelerate Realization of IoT of Embedded Devices

Smart connection with the lowest level of power consumption in the industry

Bluetooth® Low Energy solutions for healthcare and fitness devices, home electric appliances and RFID tags, typified by beacons to connect them with smartphones at low power consumption without wires, have been rapidly increasing.

Renesas Electronics can offer solutions corresponding to Bluetooth® Low Energy technology.


Chip (RL78/G1D)

The chip incorporates a balun element and a filter. It is only required to connect the chip to an antenna. Reduction in the number of external components leads to reduction in labor required for design and quality control. It also supports the long-term product supply program.


RL78/G1D User's Manual: Hardware


Module (RL78/G1D module)

Chip (RL78/G1D)

Size: 8.95x13.35 x 1.7 mm The module incorporates an antenna and a RF circuit. The abundant functional pins of RL78/G1D can be used without any change. It is the best Bluetooth® Low Energy (BLE) module available, having a good balance between the size and the number of functional pins.


RL78/G1D Module (RY7011) User's Manual: Hardware

RL78/G1D Module Firmware User's Manual

Development Environment

RL78/G1D Evaluation Board

The RL78/G1D Evaluation Board can evaluate and develop applications for the RL78/G1D BLE solution that Renesas offers. You can begin evaluation immediately after purchasing of evaluation board using software which can be downloaded from the website.

This Evaluation Board is best suited for the following purposes.


  • For evaluation of the Renesas's device (RL78/G1D)
  • For operation evaluation of the Bluetooth Low Energy
  • To use for customer's principle prototype


Module Evaluation Board


Module Evaluation Board

Module Evaluation Board (Parts Number:RM-110-RFB-2)


Sales in preparation

Use the Module and a Host MCU to Build IoT Devices Such as Sensors

RL78/G14 Fast Prototyping Board

Product Information

  *Each board can be purchased from distributors.


Application Note

RL78/G14 Fast Prototyping Board Fast Prototyping Board Host Sample Program Download

Bluetooth® Low Energy Protocol Stack for RL78 family

The Bluetooth® Low Energy protocol stack is software required to operate the G1D. It supports modem configuration and embedded configuration. It can also offer various profiles created by Bluetooth SIG. Of course, it can also adapt to custom profiles created by customers.

We offer Bluetooth® Low Energy software solutions corresponding to a wide variety of application development. For more information, please see Software Details.


Quick Start Guide

A Quick Start Guide for using the RL78/G1D Evaluation Board is available. It describes the procedure from the installation of the Renesas Electronics Bluetooth® Low Energy software up to its actual operation.



GUI tools

Even if you are not familiar with BLE, you can easily conduct BLE communication using GUI tools without writing a program. You can confirm the API execution procedure and the setting values for various parameters while actually conducting communication activities. Additionally, you can also develop a program smoothly while referring to the results (logs) of the operation check.


GUI tools



iOS/Android Application "GATTBrowser"

The smartphone application, "GATTBrowser" can be downloaded from App Store/Google Play.
GATTBrowser is the app to check the BLE behavior. It can scan BLE devices which are advertising in vicinity and can perform the GATT-based communication with the connected BLE device. You can easy to check the sample application behavior. GATTBrowser assist you to development of RL78/G1D device.


iOS Application GATTBrowser

iOS Application "GATTBrowser"

Download on the App Store

iOS Application GATTBrowser

Android Application "GATTBrowser"

GET IT ON Google Play

Android Application GATTBrowser

iOS/Android Application "RenesasBLE"

The iOS/Android application, "RenesasBLE" created by Renesas can be downloaded from each store. RenesasBLE operates in conjunction with sample programs and you can immediately experience Bluetooth® Low Energy. You can download all the sample programs for Android, iOS and RL78/G1D. You can immediately link what you experienced to the development.


Bluetooth® Low Energy Protocol Stack


Android Application "RenesasBLE"

GET IT ON Google Play

Android Application RenesasBLE

iOS Application "RenesasBLE"

Download on the App Store

iOS Application RenesasBLE



Application Note/Sample Code

Application notes are available for each hardware development process.

Principle Prototype/Evaluation

RL78/G1D Measurement Current Consumption Download


RL78/G1D Guidelines for RF Board Design Download
RL78/G1D Board Design Data for Module Equipped with Evaluation Board
(Circuit diagram, BOM, Gerber data)
Bluetooth® Low Energy microcomputer Design Guidelines for a Pattern Antenna Download
RL78/G1D Design of a Reference Antenna Download

Certification of the Radio Law

RL78/G1D Acquisition of Certification of Technical Compliance with the Radio Law (Japan) Download

Certification of Bluetooth SIG


BLE microcomputer / module Bluetooth qualification acquisition Download


The frequently asked questions for introducing RL78/G1D is summarized at the below link.



Examples of Applications/Examples of Utilization Technologies


Applications using the Bluetooth® Low Energy technology have started to be used widely in healthcare devices, and the use of the Bluetooth Low Energy technology is still expanding in a wide variety of applications for sports and fitness devices, smart home devices, industrial devices, beacon applications, etc.

Bluetooth ® Low Energy

Beacons are applications which continue to transmit ID/URL/vendor information for advertisement notification to smartphones and location detection through smartphones. As beacons must always continue to transmit radio waves, the most important thing is to operate them with low power consumption. Renesas offers stack exclusively for beacons, specialized in lower power consumption.


Multi-Hop operation

Multi-Hop uses Beacon Stack for the advertising and scanning. Relay equipment executes both transmission and reception for Multi-Hop frame relay by the flooding method. It's possible to communicate data via more than one appliances. You can execute Broadcasting a command(e.g. Lighting Control) and Gathering a data (e.g. Sensor Data) by using Multi-Hop. And, you can select security or not for prevention of eavesdropping and falsifying.


When without security version, please download from the following.
When with security version, please contact nearest Renesas sales or distributor.


Protocol Stacks for each application
Topology Device/System Download
Point-to-Point General Bluetooth Low Energy products BLE Protocol Stack
Broadcast Beacon devices (Advertising packet which does not accept connection requests and Scan) Beacon Stack
Multi-Hop Communication in the wide range by the relay with flooding method. (Beacon stack application) Multi-Hop Feature


Virtual UART Application

Responding to demands for wireless serial communication and wireless communication between embedded modules, we have developed a virtual UART application that realizes with Bluetooth® Low Energy technology. It has a simple AT command execution function to control and set Bluetooth® Low Energy communication, thereby realizing virtual UART communication where characters are transmitted/received via Bluetooth® Low Energy communication.

Suggestion of Bluetooth Low Energy utilization

Detailed technical description

Bluetooth ® Low Energy

Bluetooth® Low Energy is a low energy mode of Bluetooth® wireless technology. Bluetooth® Low Energy has an effect on power consumption especially for battery-operated applications. The attractive point of Bluetooth® Low Energy lies in that it can operate while being connected to applications for smartphones and tablets. Bluetooth® Low Energy can be used in new applications in many products including healthcare and fitness devices, home electric appliances, home automation, small devices and location information. Growth of IoT market will increase the number of products equipped with Bluetooth® Low Energy. Renesas is an associate member of Bluetooth SIG, Inc.

* Bluetooth® is a registered trademark of U.S. Bluetooth SIG, Inc.

Demo Videos

RL78 Family RF Products

RL78 Family RF Products

Wireless communication IC for Bluetooth Low energy and Sub-GHz by using RL78 and pre-amplifier


Price tag control system

Price tag control system

Electronic price tag can be controlled via gateway and cloud.


Embedded configuration demo

Embedded configuration demo

Stand-alone use at the MCU by utilization of peripheral function.


Virtual UART Application

Virtual UART Application

Wirelessization of serial communication for between the equipment by original profile.


Energy harvesting Beacon and renewal of Beacon information

Energy harvesting Beacon and renewal of Beacon information

Transmission of Eddystone-URL Beacon by pressed button energy. And, Renewal of Beacon information by the radio.


Smartphone and QE for Bluetooth

Smartphone and QE for Bluetooth

QE(e2Studio) ‘s script execution of RL78/G1D connects with RenesasBLE application of Smartphone.


Wirelessization of High accuracy temperature measurement

Wirelessization of High accuracy temperature measurement

Wirelessization of High accuracy temperature measurement by the RL78/G1D with RL78/I1E (included 24bitΔΣAD).


Operation by energy harvesting

Operation by energy harvesting

Beacon transmission by low-power of energy harvesting


Get coupon by Beacon reception

Get coupon by Beacon reception

Smartphone gets coupon via cloud after Beacon reception


Demo Videos

Bluetooth Low Energy

Temperature in a refrigerator and operation status such as door opening/closing conditions can be confirmed from anywhere via the Internet.


Demo Videos

Demonstration of Renesas Touch Key and RL78/G1D (BLE) electronic lock

Creation of Near Future by Touch Key and BLE