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 Bluetooth Low Energy lies in that it can operate while being connected to applications for smartphones and tablets. Renesas RL78/G1D 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.
This guide summarizes the Bluetooth LE MCU RL78/G1D Solution and related resources for each product development phase. Please download and use it.
Download: RL78/G1D Bluetooth LE Solution & Resource Quick Start Guide (PDF | English, 日本語)
Renesas' RL78/G1D low power 16-bit microcontrollers (MCUs) support Bluetooth Low Energy and enable reliable connections with current consumption levels among the lowest in the industry. 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.
The RL78/G1D module contains the RL78/G1D 16-bit MCU, a 32MHz crystal resonator for the RF chip and an antenna, all in a compact 8.95mm x 13.35mm x 1.7mm module. The module inherits the functional pins of the RL78/G1D, so not only can it be used for modem configuration, but the strengths of the microcontroller can also be leverage for embedded configuration. This Bluetooth Low Energy module offers a good balance between size and the number of functional pins.
The RL78/G1D evaluation board can be used to evaluate and develop applications for Renesas' RL78/G1D Bluetooth Low Energy solution. The board consists of an RL78/G1D module which can be plugged on to the development board and connected to an IDE for development and debugging. The development board can also work with a PC GUI tool for application level evaluation.
This evaluation board is best suited for the following purposes.
The Renesas RY7011 module can be evaluated with the following configuration.
The RL78/G1D BLE Module Expansion Board (RTKYRLG1D0B00000BJ) is an evaluation board with a Pmod™ interface that incorporates the RL78/G1D module (RY7011A0000DZ00).
It can connect to the RL78/G14 Fast Prototyping Board (RTK5RLG140C00000BJ) and can be used to evaluate Bluetooth LE functions. Additionally, customers can use the RL78/G1D evaluation board to develop new Bluetooth LE applications with a Bluetooth LE system employing the RL78/G1D 16-bit microcontroller (MCU). Use the expansion board together with sensor devices to easily evaluate and develop IoT applications.
*Each board can be purchased from distributors.
The Bluetooth Low Energy protocol stack is software required to operate the RL78/G1D IC. It supports modem configuration and embedded configuration. It can also adapt to custom profiles created by customers.
Renesas has prepared a dedicated "Beacon Stack" that reduces current consumption by 40% in beacon operation that constantly transmits radio waves. Renesas also provides sample programs as a reference for customers' program development.
A transmitter that transmits a small amount of data once every few milliseconds to several seconds within a radius of several tens of meters is called a beacon. This signal is used for watching terminals, indoor navigation, position detection, movement management of moving objects, coupon issuance, etc. Most beacon transmitters run on coin-type or small batteries. Since radio waves are always transmitted at regular intervals, it is required to consume as little power as possible.
The Bluetooth LE MCU RL78/G1D realizes low power consumption operation that is optimal for beacon terminals.
Multi-Hop uses a beacon stack for the advertising and scanning. Relay equipment executes both transmission and reception for Multi-Hop frame relay via the flooding method. It's possible to communicate data via more than one appliance. You can execute broadcasting a command (e.g. lighting control) and gathering data (e.g. sensor data) by using Multi-Hop. And, you can either select or not select security for prevention of eavesdropping and falsifying.
Renesas offers Bluetooth LE software solutions corresponding to a wide variety of application development. See the protocol stack product page for more information.
Even if you are not familiar with Bluetooth Low Energy, you can easily conduct Bluetooth Low Energy communication using the GUI tool 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.
Download GUI Tool: Bluetooth® Low Energy Protocol Stack GUI Tool Rev.1.13 - Sample Code (ZIP | English, 日本語) (PDF + Windows application)
The GATTBrowser is a generic data communication application for checking the operation of Bluetooth LE. You can experience data communication with Bluetooth LE by scanning Bluetooth LE devices operating in the vicinity and connecting to those devices. It can be used not only for checking the operation of sample applications provided by Renesas Electronics, but also for debugging development products that implement the RL78/G1D device and module.
The GATTBrowser supports various operating systems (iOS, Android, Windows).
The GATTBrowser for iOS and Android can be downloaded from the App Store and Google Play respectively.
Download GATTBrowser for iOS and Android :
Download GATTBrowser for Windows :
The Windows 10 Bluetooth LE application can communicate with "Virtual UART application" running on the RL78/G1D evaluation board. This is an application example for Windows 10 that sends and receives character data to and from the terminal software on a PC connected to the evaluation board via USB.
In addition, a set of projects that can be launched and used in Visual Studio 2017 are provided, so you can use this application example as a base for developing Bluetooth LE communication apps that run on Windows in a Proof of Concept (PoC) phase.
Download Windows 10 Bluetooth LE Application: Bluetooth LE microcomputer / module Windows 10 Bluetooth LE Application Rev.1.00 - Sample Code (ZIP) (PDF + set of projects for Visual Studio 2017)
The QE for BLE (for RL78 Family) is a dedicated tool for developing embedded software in systems which 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' RL78/G1D Bluetooth LE MCU, thus reducing development periods for products being placed on the market. It can also design and generate the custom profile.
Please refer to the QE for BLE: Development Assistance Tool for Bluetooth Low Energy page for more information.
The RL78 Quick Solutions demonstrate how RL78 low power MCUs combined with Renesas' analog and power products can create high-performance solutions for a wide variety of applications. Quick Solutions for the Industrial IoT, infrastructure, healthcare, and home and office are fully developed reference designs with a user’s manual, application details, schematic, bill-of-materials (BOM), and source code/project files that enable you to develop these solutions quickly.
|Smart Medicine Box with BLE||Build a solution for managing personal medication with the Smart Medicine Box with Bluetooth LE reference design featuring the RL78/G13 and RL78/G1D MCUs.|
|Smart Blood Pressure Monitor||Build a solution for tracking blood pressure and other vitals with the Smart Blood Pressure Monitor reference design featuring the RL78/L1A and RL78/G1D MCUs.|
|Smart Body Fat Scale||Build a solution for body composition management with the Smart Body Fat Scale reference design featuring the RL78/L1A and RL78/G1D MCUs.|
|Smart Moisture Sensor||Build a solution for monitoring soil moisture with the Smart Moisture Sensor reference design featuring the RL78/G11 and RL78/G1D MCUs.|
|Home & Office|
|PowerPoint Presenter||Build a solution for presentation control with the PowerPoint Presenter reference design featuring the RL78/G1D MCU.|
|Smart LED||Build a solution for LED lighting control with the Smart LED reference design featuring the RL78/G1D MCU.|
|Smart Lock||Build a solution for home security with the Smart Lock reference design featuring the RL78/G1D MCU.|
Renesas also offers many compelling analog + power + embedded processing + connectivity "Winning Combinations".
|Personal Blood Glucose Monitor||Renesas’ blood glucose monitor (BGM) design utilizes the high-performance RA2 MCU series. The high-performance ADC provides an optimal fit for BGM applications where precision is required. With the addition of the RL78/G1D module, the system can be easily extended to intelligent connections and control via mobile devices.|
|Diaper Odor Detector||The combination of Renesas’ gas and humidity sensors, and RL78/G1D Bluetooth LE MCU, makes it easier to monitor diaper odors in real-time through any handy device. This design also includes the ISL9000A, a dual LDO with low noise, very high PSRR, and low IQ.|
|Biosensing with Wireless Charging and Bluetooth||This solution enables the realization of a very compact system that supports wireless charging, collects data from multiple biosensors such as the very compact pulse oximeter sensor, and transfers it to a smartphone or cloud via Bluetooth LE wireless communication.|
|Air Quality Control for IoT Building Automation||The ZMOD4410 gas sensor and HS300x humidity sensor family along with low power and high functionality RL78/G14 microcontroller and industry's lowest level current consumption RL78/G1D Bluetooth LE MCU enable users to sense the environment for gases, measure and improve air quality, and provide observations of goods during transport.|
|Voice/Face Recognition for Security Systems||This solution utilizes a combination of voice and facial recognition to provide authorized entry. The solution is based on the powerful RZ/G2M MPU platform with 4K2K resolution and H.265 decode features to accelerate voice/face recognition speed.|
|Refrigerator Odor Detector||The combination of Renesas’ gas sensor, humidity sensor, and RL78/G14 MCU, enables users to detect gases in the refrigerator. The measured values of odor level, temperature and humidity can be monitored by handy device via Bluetooth LE wireless communication with the RL78/G1D module (RY7011).|
|Weather Station Solution||This solution supports smart home systems, where a master unit (indoor unit) aggregates weather data (temperature, humidity, CO2 concentration) that is measured by a slave unit (outdoor unit). This data can then be sent wirelessly to the cloud, and accessed through a smartphone.|
Renesas proposes the utilization of Bluetooth LE wireless communication in various scenes.
Please refer to the Knowledge Base for FAQs on Bluetooth specifications, MCUs, modules, protocol stacks, development environments, qualification, and more.
|e² studioEclipse-based Renesas integrated development environment (IDE). [Support MCU/MPU: RA, RE, RX, RL78, RH850, Renesas Synergy, RZ]||IDE and Coding Tool||Renesas|
|Renesas Flash Programmer (Programming GUI)Flash memory programming software [Support MCU/MPU and devices: RA, RE, RX, RL78, RH850, Renesas Synergy, Power Management, Renesas USB Power Delivery Family, ICs for Motor Driver/Actuator Driver, V850, 78KR, 78K0]||Programmer (Unit/SW)||Renesas|
|Bluetooth® Low Energy Protocol Stack for RL78 FamilyBluetooth v4.2 certified protocol stack (Target device: RL78/G1D)||Protocol Stack||Renesas|
|QE for BLE: Development Assistance Tool for Bluetooth® Low EnergyDebugging support tool that specializes in Bluetooth® Low Energy system development [Plugin for Renesas IDE "e² studio"] [Support MCU/MPU: RA, RX, RL78]||Solution Toolkit||Renesas|
|RL78 Quick Solutions||Content|
Wireless communication IC for Bluetooth Low energy and Sub-GHz by using RL78 and pre-amplifier