Overview

Description

The RL78/G22 microcontroller features the industry's lowest current consumption levels of 37.5µA/MHz during CPU operation and 200nA during STOP, as well as a rich array of capacitive touch channels. The lineup of new-generation RL78 general-purpose microcontrollers is extended by offering a variety of 16-pin to 48-pin packages and 32KB to 64KB of flash memory.

Along with a maximum operating frequency of 32MHz, a wide operating voltage range of 1.6V to 5.5V, and enhanced analog and security functions, the SNOOZE mode sequencer significantly reduces power consumption during intermittent operation. A rich development environment is provided for the RL78/G22 including an evaluation board (Fast Prototyping Board) that enables program writing/debugging without additional tools, simply by connecting a USB cable, and a Smart Configurator that facilitates design using a GUI. It is also compatible with the existing RL78 family and can be a seamless replacement, making it suitable for a wide range of applications from home appliances and consumer electronics to industrial equipment.

Features

  • CPU: RL78 core, Max. 32MHz
  • Voltage: 1.6V to 5.5V
  • Package: 16-pin to 48-pin
  • Memory: Program Flash: 32KB to 64KB, SRAM 4KB, Data Flash 2KB
  • Operating temperature range:​ up to 105 °C
  • Enhanced Capacitive Sensing Unit (CTSU2L)
  • Timer: 16-bit Timer (ch) x 8, Watchdog Timer (ch) x 1, 32-bit Interval Timer x 1 ch
  • PWM: PWM Output x 7
  • Analog function: 10-bit A/D Converter (ch) x 10
  • On-chip Oscillator Freq. (MHz): High-Speed: up to 32MHz
  • Middle-Speed: up to 4MHz
  • Low-speed: 32.768kHz
  • Snooze mode sequencer
  • Event link controller
  • Others: RTC, Power-On Reset, Low Voltage Detection
  • Packages: SSOP, LQFP, HWQFN, WFLGA

Comparison

Applications

Applications

  • General Purpose
  • Consumer Applications
  • Home Appliances
  • Industrial Automation
  • Building Automation

Documentation

Design & Development

Software & Tools

Software & Tools

Software title
Software type
Company
RI78V4 V2 Real-time OS for RL78 Family
μITRON Specification real-time OS for RL78 Family [Required IDE : CS+]
ITRON OS Renesas
CS+ Partner OS Aware Debugging Plug-in
Features for task level debugging of real-time OS applications [Plugin for Renesas IDE CS+] [Support MCU/MPU: RX, RL78]
Plug-in, OS Aware Debugging, Etc. Renesas
C Compiler Package for RL78 Family [CC-RL]
C Compiler Package for RL78 Family [IDE: CS+, e² studio]
Compiler/Assembler 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
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
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]
Emulator Renesas
E2 emulator Lite [RTE0T0002LKCE00000R]
On-chip debugging emulator. Also available as a flash memory programmer. [Support MCU/MPU: RA, RE, RL78, RX]
Emulator Renesas
RL78 Smart Configurator
RL78 Smart Configurator is a utility for combining software in ways that meet your needs. It simplifies the embedding of Renesas drivers in your systems through supports for importing middleware and drivers and configuring pins.
Solution Toolkit 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, 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, Renesas Synergy, Power Management, Renesas USB Power Delivery Family, ICs for Motor Driver/Actuator Driver, V850, 78KR, 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
QE for Capacitive Touch: Development Assistance Tool for Capacitive Touch Sensors
In developing embedded system using the capacitive touch sensor of MCUs, you can easily setup initial configurations of the touch interface as well as process the tuning of sensors, and reduce development time. [Plugin for Renesas IDE "e2 studio"] [Standalone Version] [Support MCU/MPU:RA, RL78, RX, Renesas Synergy™]
Solution Toolkit Renesas
FFT Library
Fast Fourier Transform (FFT) Library
DSP / FFT Renesas
Sound Playback/Compression System [M3S-S2-Tiny] for RL78 Family
Sound playback system for RL78 Family
Sound / Voice Renesas
FAT File System [M3S-TFAT-Tiny] for the RL78 Family
FAT file system for RL78 Family
File System 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
Simulator for CS+ of RL78 Family, 78K0R and 78K0
Simulator for RL78 Family, 78K0R and 78K0 [Support IDE: CS+] (Note: This product is included in the Compiler Package and is not available separately.)
Simulator Renesas
e² studio - information for RL78 Family
Eclipse-based Renesas integrated development environment (IDE).
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
Crypto Library
Robust encode library to ensure security for all types of system developments
Security / Crypto 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
24 items

Sample Code

Boards & Kits

Boards & Kits

Models

RL78 Family Secondary Device OTA Update Solution

This video will show the steps to operate the secondary device OTA firmware update solution via primary device with the AWS Cloud, tailored for low-end microcontrollers lacking direct internet connectivity.

The evaluation environment uses Renesas' RL78/G22 Fast Prototyping Board and Cloud Kit Based on RX65N (CK-RX65N).