Galvanic Skin Resistance and Body Composition Meter Reference Design
Renesas has developed a reference design/solution that can be used by our customers as a starting point for wearable galvanic skin response products and hand held body...
Overview
Description
RL78/G1D microcontrollers support Bluetooth® Low Energy and realized the lowest level of current consumption in the industry at 4.3mA RF transmission current (0dBm output) and 3.5mA RF receiving current. Since circuit elements necessary for connecting an antenna are built in, not only does this simplify circuit design for the antenna connection, but it also helps reduce the cost of the end product because external parts are not needed. The RL78/G1D module contains the RL78/G1D, a 32MHz crystal resonator for the RF chip, and an antenna, all in a compact (8.95mm x 13.35mm x 1.7mm) module. Moreover, the module inherits the functional pins of the RL78/G1D, so not only can you use it for modem configuration, but you can also leverage the strengths of the microcontroller for embedded configuration. The module has obtained Radio Law (Japan, FCC, IC, and CE) and Bluetooth SIG certification.
Features
- CPU: RL78 Core, Max. 32MHz
- Voltage: 1.6V to 3.6V
- Package: 48-pin HWQFN
- Memory: SRAM Max. 20KB, Program Flash Max. 256KB
- Timer: 16-bit Timer (ch) x 8, 8-bit Timer (ch) x 8, Watchdog Timer (ch) x 1, 12-bit Interval Timer x 1 ch
- PWM: PWM Output x 7
- Analog Function: 10-bit A/D Converter (ch) x 8
- On-chip Oscillator Freq. (MHz): High-Speed: 32, 24, 16, 12, 8, 4, 1MHz
Low-speed: 15kHz - Others: RTC, Power-On Reset, Low Voltage Detection
Comparison
Applications
Applications
- Office
- Home Appliance
- Healthcare
- Security
- Bluetooth Low Energy
Design & Development
Software & Tools
Software & Tools
| Software title
|
Software type
|
Company
|
|---|---|---|
| FFT Library Fast Fourier Transform (FFT) Library
|
DSP / FFT | Renesas |
| FAT File System [M3S-TFAT-Tiny] for the RL78 Family FAT file system for RL78 Family
|
File System | Renesas |
| RI78V4 V1 Real-time OS for RL78 Family and 78K0R μITRON4.0 Specification real-time OS for RL78 Family and 78K0R [Required IDE : CS+]
|
ITRON OS | Renesas |
| RI78V4 V2 Real-time OS for RL78 Family μITRON Specification real-time OS for RL78 Family [Required IDE : CS+]
|
ITRON OS | Renesas |
| Bluetooth® Low Energy Protocol Stack for RL78 Family Bluetooth v4.2 certified protocol stack (Target device: RL78/G1D)
|
Protocol Stack | Renesas |
| Crypto Library Robust encode library to ensure security for all types of system developments
|
Security / Crypto | Renesas |
| Sound Playback/Compression System [M3S-S2-Tiny] for RL78 Family Sound playback system for RL78 Family
|
Sound / Voice | Renesas |
| AP4, Applilet Peripheral I/O driver generator compatible with third-party compilers and GNU compiler (for RZ, V850, RX, RL78, and 78K)
|
Code Generator | Renesas |
| Code Generator Plug-in Automatic driver generation tool for internal peripheral I/O modules through GUI settings [Standard features for Renesas IDE "e² studio" and CS+] [Support MCU/MPU: RL78, V850, 78K, RX]
|
Code Generator | Renesas |
| C Compiler Package for RL78 Family [CC-RL] C Compiler Package for RL78 Family [IDE: CS+, e² studio]
|
Compiler/Assembler | Renesas |
| E2 emulator [RTE0T00020KCE00000R] On-chip debugging emulator. Also available as a flash memory programmer. [Support MCU/MPU: RA, RE, RH850, R-Car D1, RL78, RX, RISC-V MCU]
|
Emulator | Renesas |
| E2 emulator Lite [RTE0T0002LKCE00000R] On-chip debugging emulator. Also available as a flash memory programmer. [Support MCU/MPU: RA, RE, RL78, RX, RISC-V MCU]
|
Emulator | Renesas |
| PG-FP6 Flash memory programmer [Programming software: Dedicated GUI-based software, the "FP6 Terminal"] [Support MCU/MPU and devices: RA, RE, RX, RL78, RH850, RISC-V MCU, Renesas Synergy, Power Management, Renesas USB Power Delivery Family, ICs for Motor Driver/Actuator Driver, SuperH RISC engine, V850, 78K, R8C]
|
Programmer (Unit/SW) | Renesas |
| Renesas Flash Programmer (Programming GUI) Flash memory programming software [Support MCU/MPU and devices: RA, RE, RX, RL78, RH850, RISC-V MCU Renesas Synergy, DA1453x, DA1459x, DA1469x, DA1470x, Power Management, Renesas USB Power Delivery Family, ICs for Motor Driver/Actuator Driver, V850, 78K0R, 78K0]
|
Programmer (Unit/SW) | Renesas |
| Code Flash Libraries (Flash Self Programming Libraries) Libraries for the reprogramming of code area flash memory, including EEPROM emulation libraries for the code areas of 78K-family products
|
Self Programming Library (Flash Library) | Renesas |
| Data Flash Libraries Libraries for the reprogramming of data flash memory, including EEPROM emulation libraries for the data areas of RL78-family products
|
Self Programming Library (Flash Library) | Renesas |
| Simulator for e² studio of RL78 Family Simulator for RL78 Family [Support IDE: e² studio] (Note: This product is included in the Renesas IDE "e² studio" and is not available separately.)
|
Simulator | Renesas |
| RL78 Web Simulator Right online tools to support initial evaluation of the low power consumption RL78 Family. Lineup: MCU Simulator Online and Current Consumption Calculator. Free of charge.
|
Simulator | Renesas |
| QE for BLE: Development Assistance Tool for Bluetooth® Low Energy Debugging 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 |
| QE for Current Consumption: A Dedicated Tool for Current Measurement Development assistance tool helps to shorten the times taken in operations for the tuning of currents drawn. [Standard item in the "e² studio" and CS+ (CS+ for CC only) IDEs] [Support MCU/MPU: RX, RL78]
|
Solution Toolkit | Renesas |
| CS+ Renesas integrated development environment (IDE) [Support MCU/MPU: RH850, V850, RX, RL78, 78K0R, 78K0]
(Note: CS+ is not generally promoted to U.S. and European customers.)
(Note: To use Smart Configurator on CS+ for RL78/G23 and RX family MCUs, install the Smart Configurator for each MCU family separately downloading from ”Design & Support” > ”Development Tools” > ”Smart Configurator”)
|
IDE and Coding Tool | Renesas |
| Sensor Software Modules for Renesas MCU Platforms Middleware (FIT module and FSP module) and sample software packages that enable control and data acquisition for Renesas sensor products.
|
Sensor | Renesas |
| e² studio - information for RL78 Family Eclipse-based Renesas integrated development environment (IDE).
|
IDE and Coding Tool | Renesas |
| SPI/QSPI Serial Flash Memory, QSPI Serial Phase Change Memory Driver Device Driver for SPI and QSPI Serial Flash Memory and QSPI Serial Phase Change Memory
|
Serial Memory | Renesas |
| IAR Embedded Workbench for Renesas RL78 IAR Embedded Workbench provides extensive support for RL78 devices. IAR Embedded Workbench is a complete set of development tools with leading optimization technology for creating powerful automotive applications.
|
IDE and Coding Tool | IAR Systems |
| Renesas IAR Embedded Workbench Device-Support-Packages Renesas IAR Embedded Workbench Device-Support-Packages include all device-specific files to be used with the Embedded Workbench IDE.
|
IDE and Coding Tool | Renesas |
|
26 items
|
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Sample Code
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Models
ECAD Models
Schematic symbols, PCB footprints, and 3D CAD models from SamacSys can be found by clicking on products in the Product Options table. If a symbol or model isn't available, it can be requested directly from the website.
Processing table
PLP |
Program Memory (KB) |
RAM (KB) |
Lead Count (#) |
Temp. Range |
Bit Size |
CPU |
Data Flash (KB) |
Supply Voltage (V) |
Operating Freq (Max) (MHz) |
RTC |
LVD |
DMA |
I/O Ports |
Timer |
ADC |
DAC |
CAN (ch) |
Ethernet |
USB |
Human Machine Interface |
Moisture Sensitivity Level (MSL) |
Price (USD) | 1ku |
Buy / Sample |
|
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Part Number | ||||||||||||||||||||||||
| 2026 Mar | 128 | 12 | 48 | -40 to 85°C | 16 | RL78 | 8 | 1.6 - 3.6 | 32 | Yes | Yes | Yes | 32 | 12-bit x 1-ch, 16-bit x 8-ch | 10-bit x 8-ch | 0 | No | 3 | 2.585 | Get Samples, | ||||
| 2026 Mar | 128 | 12 | 48 | -40 to 85°C | 16 | RL78 | 8 | 1.6 - 3.6 | 32 | Yes | Yes | Yes | 32 | 12-bit x 1-ch, 16-bit x 8-ch | 10-bit x 8-ch | 0 | No | 3 | ||||||
| 2026 Mar | 128 | 12 | 48 | -40 to 85°C | 16 | RL78 | 8 | 1.6 - 3.6 | 32 | Yes | Yes | Yes | 32 | 12-bit x 1-ch, 16-bit x 8-ch | 10-bit x 8-ch | 0 | No | 3 | Get Samples, | |||||
| 2026 Mar | 128 | 12 | 48 | -40 to 85°C | 16 | RL78 | 8 | 1.6 - 3.6 | 32 | Yes | Yes | Yes | 32 | 12-bit x 1-ch, 16-bit x 8-ch | 10-bit x 8-ch | 0 | No | 3 | ||||||
| 2026 Mar | 192 | 16 | 48 | -40 to 85°C | 16 | RL78 | 8 | 1.6 - 3.6 | 32 | Yes | Yes | Yes | 32 | 12-bit x 1-ch, 16-bit x 8-ch | 10-bit x 8-ch | 0 | No | 3 | Get Samples, | |||||
| 2026 Mar | 192 | 16 | 48 | -40 to 85°C | 16 | RL78 | 8 | 1.6 - 3.6 | 32 | Yes | Yes | Yes | 32 | 12-bit x 1-ch, 16-bit x 8-ch | 10-bit x 8-ch | 0 | No | 3 | ||||||
| 2026 Mar | 192 | 16 | 48 | -40 to 85°C | 16 | RL78 | 8 | 1.6 - 3.6 | 32 | Yes | Yes | Yes | 32 | 12-bit x 1-ch, 16-bit x 8-ch | 10-bit x 8-ch | 0 | No | 3 | 4.638 | Get Samples, | ||||
| 2026 Mar | 192 | 16 | 48 | -40 to 85°C | 16 | RL78 | 8 | 1.6 - 3.6 | 32 | Yes | Yes | Yes | 32 | 12-bit x 1-ch, 16-bit x 8-ch | 10-bit x 8-ch | 0 | No | 3 | ||||||
| 2026 Mar | 256 | 20 | 48 | -40 to 85°C | 16 | RL78 | 8 | 1.6 - 3.6 | 32 | Yes | Yes | Yes | 32 | 12-bit x 1-ch, 16-bit x 8-ch | 10-bit x 8-ch | 0 | No | 3 | Get Samples, | |||||
| 2026 Mar | 256 | 20 | 48 | -40 to 85°C | 16 | RL78 | 8 | 1.6 - 3.6 | 32 | Yes | Yes | Yes | 32 | 12-bit x 1-ch, 16-bit x 8-ch | 10-bit x 8-ch | 0 | No | 3 | ||||||
| 2026 Mar | 256 | 20 | 48 | -40 to 85°C | 16 | RL78 | 8 | 1.6 - 3.6 | 32 | Yes | Yes | Yes | 32 | 12-bit x 1-ch, 16-bit x 8-ch | 10-bit x 8-ch | 0 | No | 3 | 3.101 | Get Samples, | ||||
| 2026 Mar | 256 | 20 | 48 | -40 to 85°C | 16 | RL78 | 8 | 1.6 - 3.6 | 32 | Yes | Yes | Yes | 32 | 12-bit x 1-ch, 16-bit x 8-ch | 10-bit x 8-ch | 0 | No | 3 | ||||||
| N/A | 256 | 20 | 42 | -25 to 75°C | 16 | RL78 | 8 | 1.6 - 3.6 | 32 | Yes | Yes | Yes | 24 | 12-bit x 1-ch, 16-bit x 8-ch | 10-bit x 8-ch | 0 | No | 3 | ||||||
| N/A | 256 | 20 | 42 | -25 to 75°C | 16 | RL78 | 8 | 1.6 - 3.6 | 32 | Yes | Yes | Yes | 24 | 12-bit x 1-ch, 16-bit x 8-ch | 10-bit x 8-ch | 0 | No | 3 |
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Videos & Training
RL78 Family RF Control IC for Bluetooth Low Energy and Sub-GHz
Wireless communication IC for Bluetooth Low energy and Sub-GHz by using RL78 and pre-amplifier
Video List