Renesas RL78/G22

How to make the device's battery last longer? In recent years, battery devices such as IoT endpoints and wearable devices are increasingly required to be smaller and have a longer service life. This trend demands ultra-low power for MCUs that control such devides.

The RL78/G22, a new release of the RL78 family next generation products, is designed to meet these requirements.

In addition, RL78/G22 comes with extensive capacitive touch function for touch HMI of various appliances and/or industrial equipmnent.

Key features

• Lowest power consumption in Renesas low power MCU family
• Ideal for battery powered devices
• Enriched capacitive touch channels
• Wide supply voltage simplifies power circuit design

Additional features

• RL78-S3 CPU core up to 32MHz
• Flash:  32KB/64KB, SRAM: 4KB
• Voltage: 1.6V to 5.5V
• Wide range of packages: from 16pin to 48pin
• Ultra low-power: RL78/G22 operates with 37.5uA/MHz at CPU RUN mode
• Capacitive touch (CTSU2La) – Max 29ch, Multiple Electrode Connection (MEC)​, high sensitivity and high noise tolerance
• Snooze Mode Sequencer (SMS): Further reduces system power consumption
• High accuracy HOCO: fast wakeup from standby​ (1us)
• Security functions: battery authentication, AES library, unique ID

Applications

• IoT end point
• Battery operated equipment
• Home appliance
• Industrial equipment

Available tools

IDE

• Renesas CS+
• Renesas e2studio
• IAR Embedded workbench for Renesas RL78
• Arduino IDE
  
  

Compiler

• CC-RL
• IAR Compiler
• LLVM Compiler
  
  

Debugger & Flash programmer

• Debugging by USB to Serial IC (Emulator-less debugging & programmer-less programming)
• Renesas E2 / E2 Lite
• PG-FP6
  
  

Software development support tool

• Renesas smart configurator
• Arduino library
  
  

Evaluation board

• RL78/G22 Fast prototyping board
• RL78/G22 Capacitive touch evaluation system