Overview
Description
RL78/L13 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: 1.61 μANote 2, and internal voltage boost: 1.42 μA, and capacitive split: 0.77 µA. With a lineup of 64/80-pin products supporting up to 376 segments, these microcontrollers are perfect for devices with built-in LCD panels such as home 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 to 80-pin QFP
- Memory: SRAM Max. 8KB, Program Flash Max. 128KB
Comparison
Applications
Design & Development
Software & Tools
Sample Code
Boards & Kits
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.
Support
Support Communities
Get quick technical support online from Renesas Engineering Community technical staff.
Support Communities
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Halt mode for RL78/L13
Hi, I'd like to make the device works intermittently to save the power consumption. I would like to know if the MCU is able to be woke up by a interval timer from the Halt/Sleep mode. And in the Sleep/Halt mode, the LCD module and ...
Nov 7, 2024 -
RL78/L13 IICA0 always return value of 0
Hello, I'd like to discuss about the issue I am facing of the I2C between RL78/L13 and EEPROM BR24G01FVM. Here is IICA0 configuration and clock setting: In the code, I am using R_IICA0_Master_Send and R_IICA0_Master_Receive API to send and receive data ...
Jun 2, 2024 -
RL78/L13 issue with controlling LCD
Basically I have multiple RL78/L13 boards and all of them are working properly but one isn`t and I have narrowed down the issue to when i`m setting the 4-time slice. When it isn`t set the screen works but shows gibberish as it`s default ...
Aug 17, 2022
FAQs
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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 -
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 -
RL78 Family: Relationship between A/D Conversion Resolution and A/D Conversion Time
... 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-bit or 16 ...
Nov 12, 2024
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.