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RL78/L1A

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Product Longevity: 2035

Ultra-Low Power Microcontrollers with Embedded LCD and Enhanced Analog Peripherals

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Overview

The ultra-low power RL78/L1A microcontroller family with embedded LCD has enhanced analog peripherals such as 12-bit A/D converters, 12-bit D/A converters, comparators, high accuracy rail-to-rail operational amplifiers with switch fabrics and comes with memory up to 128kb flash. Using the smart features like DTC and ELC a lot of peripherals can be connected internally to reduce CPU workload and can save overall power consumption.

Available in 80-pin and 100-pin LFQFP packages, this MCU line has been developed especially for healthcare biosensing applications such as blood glucose meters. It is also suitable for many other appliances which need low power with LCD and rich analog peripherals.

RL78/L1A Block Diagram
RL78/L1A Block Diagram
  • CPU: RL78 core, Max. 24MHz
  • Voltage: 1.8V to 3.6V
  • Package: 80-pin to 100-pin QFP
  • Memory: SRAM Max. 5.5KB, Program Flash Max. 128KB

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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.

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Resources

Support Communities

  1. RL78 Quick Solutions

    ... Household Gas Alarm RL78/G10 Window Alarm with Buzzer RL78/L12 PM2.5 Monitor with Portable Battery RL78/G10 Infrared Human Sensor RL78/L1A Smart Blood Pressure Monitor RL78/G11 Safety Light Curtain RL78/G11 High-End Gas Cooker RL78/L1A Smart Body ...

    Nov 27, 2018

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

    ... /G23, RL78/G24Group C: RL78/G1A, RL78/G1P, RL78/I1D, RL78/L1CGroup D: RL78/F23, RL78/F24, RL78/L1AGroup E: RL78/D1A, RL78/F12, RL78/F13, RL78/F14, RL78/F15, RL78/G10, RL78/G11 ...

    Nov 12, 2024
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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.