Overview
Description
RL78/L1C microcontrollers have a built-in segment LCD driver and USB 2.0 function. 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: 1.76μANote 2, internal voltage boost: 1.23μA, and capacitive split: 0.74µA. They support USB high-speed battery charging (Battery Charging Specification 1.2) and come in a lineup of 80/100-pin, maximum 416 segment products. These microcontrollers can be used in sensor modules and healthcare devices as well as home appliances and measurement devices.
Note 1: Current (typ.) at 1/3 bias, subclock operation, HALT mode, and RTC operation.
Note 2: Resistance value for external resistance division = 1000kΩ.
Features
- CPU: RL78 core, Max. 24MHz
- Voltage: 1.6V to 3.6V
- Package: 85-pin LGA, 80-pin to 100-pin QFP
- Memory: SRAM Max. 16KB, Program Flash Max. 256KB
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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Resizing the RAM on RL78/L1C R5F111MJ.
Hi, I am facing a strange issue that the application works fine with debugger but not when it is executed stand-alone without debugger. IDE: CS+ V7.00.00 Compiler: CC-RL V1.07.00 I have observed that the device reboots after 5-6 seconds from booting up. Watchdog ...
May 23, 2019 -
Can RL78/L1C use SPI Mode to control SDHC?
Hello: Regarding whether RL78/L1C R5F111PJ can use SPI Mode to control SDHC, if not, is there any recommended RL78 series that can use SPI Mode or SDIO Mode? Thank you Paul
Nov 4, 2024 -
RL78/L1C USB Peripheral Firmware Updater
Hi, I am facing issue in USB application loading in RL78/L1C. I am using PCDC to load file. I am referring the below application note which is available on Renesas site. while implementing application workspace. I found the section SS is Rx63n instead of RL78/L1C MCU ...
Mar 15, 2024
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
... /I1B, RL78/I1C, RL78/I1EGroup B: RL78/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/ ...
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.