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RL78/G1A

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Product Longevity: 2035

Low Power, General Purpose Microcontrollers with Built-in High-resolution A/D Converter

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Overview

RL78/G1A microcontrollers balance the industry's lowest level of consumption current (CPU: 66 μA/MHz, standby (STOP): 230 nA) and a high performance of43.2 DMIPS (32 MHz). A built-in high-resolution 12-bit A/D converter, on-chip oscillator, data flash, and safety features (function that detects illegal operation of hardware) enable support for the household appliance safety standard (IEC/UL 60730). With an lineup of 25 to 64-pin LGA/BGA and other small packages, these microcontrollers are perfect for consumer and industrial sensor applications.

RL78/G1A Block Diagram
RL78/G1A Block Diagram
  • CPU: RL78 core, Max. 32MHz
  • Voltage: 1.6V to 3.6V
  • Package: 32 to 48-pin HWQFN, 48 to 64-pin LFQFP, 64-pin VFBGA, 25-pin WFLGA
  • Memory: SRAM Max. 4KB, Program Flash Max. 64KB
  • Timer: 16-bit Timer (ch) x 8, 8-bit Timer (ch) x 4, Watchdog Timer (ch) x 1, 12-bit Interval Timer x 1 ch
  • PWM: PWM Output x 6
  • Analog function: 12-bit A/D Converter (ch) x 28
  • On-chip Oscillator Freq. (MHz): High-Speed:32M, 24M, 16M, 12M, 8M, 6M, 4M, 3M, 2M, 1MHz Low-speed:15kHz
  • Others: RTC, Power-On Reset, Low Voltage Detection

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Resources

Support Communities

  1. AVrefP pin dropping Voltage; ADC port misbheaving; RL78/G1A

    Dear All, Greetings for the day. My MCU Part Number: RL78/ G1A series, R5F10EGE I am measuring some analog sensor values on Pin 26, 27 & Pin 30 (which voltage levels are always below 2.5V DC). The "AVrefP" Pin is connected with +2.5V reference & "AVRefM" is ...

    Apr 5, 2024
  2. I2C Slave on RL78 Controller

    I want to make my RL78 Controller I2C Slave device, Please advice hoe to do that ? My programing software is CS+ CC. [locked by: Sai (SWF) at 15:44 (GMT 0) on 20 Oct 2022]

    Aug 4, 2022
  3. UART

    Hello all   I am used RL78/G1A (R5F10EGE) microcontroller and i have to receive data only by using UART so how to receive data only give me any reference code or any examples   Thank you

    Apr 20, 2020
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FAQs

  1. RL78 Family: Reset signal generated by the power-on reset circuit (POR)

    ... F24, RL78/G10, RL78/G11, RL78/G12, RL78/G13, RL78/G13A, RL78/G14, RL78/G15, RL78/G16, RL78/G1A, RL78/G1C, RL78/G1D, RL78/G1F, RL78/G1G, RL78/G1H, RL78/G1M,RL78/G1N, RL78 ...

    Apr 28, 2025
  2. Reference Materials for Migration from 78K0/Kx2 to RL78

    We have the following reference materials available.  - How to replace a program for 78K0 with a program for RL78　　Replacement Guide for 78K0 Family to RL78 Family (CcnvCA78K0)         Software for converting a C source file for CA78K0 and CA78K0R to a C source file for CC-RL　　　　CcnvCA78K0 C Source ...

    Dec 21, 2020
  3. RL78 Family: Is it possible to initialize the on-chip debug security ID?

    ... F24, RL78/G10, RL78/G11, RL78/G12, RL78/G13, RL78/G13A, RL78/G14, RL78/G15, RL78/G16, RL78/G1A, RL78/G1C, RL78/G1D, RL78/G1F, RL78/G1G, RL78/G1H, RL78/G1M, RL78/G1N, RL78 ...

    Aug 1, 2025
View All Results from FAQs (20)

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Blog Post
Nov 30, 2023
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