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Overview

Description

RL78/L12 microcontrollers have a built-in segment LCD driver. Three LCD driving voltage generation methods (external resistance division, capacitive split, and internal voltage boost) are supported, corresponding to a variety of segment LCD panels. They realize low current consumptionNote 1: external resistance division: 1.60 μANote 2, internal voltage boost: 1.19 μA, and capacitive split: 0.68 µA. With a lineup of 32 to 64-pin products supporting up to 280 segments, these microcontrollers are perfect for small devices with built-in LCD panels such as small appliances and healthcare devices.

Note 1: Current (typ.) at 1/3 bias, subclock operation, HALT mode, and RTC operation.

Note 2: Resistance value for external resistance division = 1000 kΩ.

Features

  • CPU: RL78 core, Max. 24MHz
  • Voltage: 1.6V to 5.5V
  • Package: 64-pin QFN, 32 to 64-pin QFP
  • Memory: SRAM Max. 1.5KB, Program Flash Max. 32KB

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Models

ECAD Models

Schematic symbols, PCB footprints, and 3D CAD models from SamacSys can be found by clicking on the CAD Model links in the Product Options table. If a symbol or model isn't available, it can be requested directly from SamacSys.

Diagram of ECAD Models

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Support Communities

  1. Free RTOS in RL78/L12

    hello,   I am using RL78/L12 MCU. I want to know that can we use freeRTOS in RL78/L12 (YRPBRL78/L12)? and if yes then is there any sample code for freeRTOS? which IDE we have to use for that?   Thanks&Regards, Manan Patel

    Apr 2, 2020
  2. EPPROM WRITE AND READ FOR RL78/L12

    Hello, I try to write data to epprom, but I didn't find any example for this. How can I write data to epprom? My IDE is CS+. Are DMA and Epprom write and read the same? I want to write flag state to epprom (The flag variable in the ...

    Apr 11, 2023
  3. EPPROM WRITE AND READ FOR RL78/L12

    Hello, I try to write data to epprom, but I didn't find any example for this. How can I write data to epprom? My IDE is CS+. Are DMA and Epprom write and read the same? I want to write flag state to epprom (The flag variable in the ...

    Apr 11, 2023
View All Results from Support Communities (30)

FAQs

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

    ... G1H, RL78/G1M,RL78/G1N, RL78/G1P, RL78/G22, RL78/G23, RL78/G24, RL78/H1D, RL78/I1A, RL78/I1B, RL78/I1C, RL78/I1D, RL78/I1E, RL78/L12, RL78/L13, RL78/L1A, RL78/L1C   Japanese

    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: Relationship between A/D Conversion Resolution and A/D Conversion Time

    ... G1D, RL78/G1F, RL78/G1G, RL78/G1H, RL78/G1M, RL78/G1N, RL78/G22, RL78/H1D, RL78/I1A, RL78/L12, RL78/L13 ✓: SelectableN/E: Not Eligible Note. It is selectable to read the conversion result register in either 24 ...

    Nov 12, 2024
View All Results from FAQs (23)

Videos & Training

The easy-to-build RL78 Quick Solutions feature Renesas' ultra-low power RL78 MCUs and analog devices. These solutions showcase device combinations that improve design performance and power efficiency to support your product development.