RL78/L1C

Microcontrollers & Microprocessors

Renesas MCU Guide

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Overview

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 consumption^{Note 1}: external resistance division: 1.76 μA^{Note 2}, internal voltage boost: 1.23 μA, and capacitive split: 0.74 µA. 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 = 1000 kΩ.

RL78/L1C Block Diagram

CPU: RL78 core, Max. 24MHz
Voltage: 1.6V to 3.6V
Package: 85-pin LGA, 80 to 100-pin QFP
Memory: SRAM Max. 16KB, Program Flash Max. 256KB

Healthcare
Home Appliance
USB

Documentation

Title	Type	Date
RL78/L1C Datasheet Rev.2.20 PDF1.49 MB	Datasheet	Dec 28, 2017
RL78/L1C User's Manual: Hardware Rev.2.20 PDF16.41 MB日本語	Manual - Hardware	Dec 28, 2017
RL78 Family SHA Hash Function Library: Introduction Guide Rev.2.01 PDF271 KB日本語 Related Files: Sample Code	Application Note	Jun 30, 2022
e² studio Creating and executing build CMake project PDF1.11 MB日本語	Application Note	Jun 28, 2022
How to automate CUnit tests in e² studio and Jenkins PDF2.26 MB日本語	Application Note	Jun 15, 2022
Smart Configurator, Code Generator Project Porting Procedures for CS+ and e² studio PDF1.42 MB日本語	Application Note	Mar 7, 2022
RL78 Family FFT Library: Deployment Guide Rev.1.05 PDF290 KB日本語 Related Files: Sample Code	Application Note	Oct 25, 2021
RL78 Family RL78 Digital Signal Controller Library - Filter Rev.2.01 PDF887 KB日本語 Related Files: Sample Code	Application Note	Sep 30, 2021
Integrated Development Environment e² studio: How to use CUnit in e² studio Rev.1.01 PDF1.00 MB日本語	Application Note	Jul 26, 2021
Integrated Development Environment e² studio: How to use EGit in e² studio Rev.1.01 PDF1.79 MB日本語	Application Note	Jul 26, 2021
RL78 Family Open Source FAT File System M3S-TFAT-Tiny: Introduction Guide Rev.2.00 PDF304 KB日本語 Related Files: Sample Code	Application Note	Jul 14, 2021
RL78 Family SPI mode MultiMediaCard Driver: Introduction Guide Rev.2.00 PDF605 KB日本語 Related Files: Sample Code	Application Note	Jul 14, 2021
RL78/G14, RL78/G1C, RL78/L12, RL78/L13, RL78/L1C, RL78/G23 Group Clock Synchronous Single Master Control Software Using CSI Mode of Serial Array Unit Rev.1.06 PDF711 KB日本語 Related Files: Sample Code	Application Note	Jul 14, 2021
RX Family, RL78 Family, 78K0R/Kx3-L Macronix International MX25/66L Family Serial NOR Flash Memory Control Software Rev.1.03 PDF934 KB日本語 Related Files: Sample Code	Application Note	Jul 14, 2021
RL78 Family M3S-S2-Tiny: Introduction Guide Rev.2.00 PDF231 KB日本語 Related Files: Sample Code	Application Note	May 13, 2021
RL78/G14 Modbus ASCII/RTU (R01AN5380EJ0102) Rev.1.02 PDF1.76 MB日本語 Related Files: RL78/G14 Modbus ASCII/RTU Rev.1.02 - Sample Code	Application Note	Apr 5, 2021
LIN Controller Usage: Applications and Frequently Asked Questions Rev.2.01 PDF1.03 MB	Application Note	Jan 5, 2021
RL78/G14, H8/36109 Migration Guide from H8 to RL78: 14-Bit PWM Rev.1.00 PDF304 KB日本語	Application Note	Dec 21, 2020
RL78/G14, H8/36109 Migration Guide from H8 to RL78: A/D Converter Rev.1.00 PDF419 KB日本語	Application Note	Dec 21, 2020
RL78/G14, H8/36109 Migration Guide from H8 to RL78: Band-Gap Regulator, Power-On Reset & Low-Voltage Detection Circuits Rev.1.00 PDF264 KB日本語	Application Note	Dec 21, 2020
RL78/G14, H8/36109 Migration Guide from H8 to RL78: CPU architecture Rev.1.00 PDF290 KB日本語	Application Note	Dec 21, 2020
RL78/G14, H8/36109 Migration Guide from H8 to RL78: Clock Pulse Generators Rev.1.00 PDF383 KB日本語	Application Note	Dec 21, 2020
RL78/G14, H8/36109 Migration Guide from H8 to RL78: Exception Handling Rev.1.00 PDF378 KB日本語	Application Note	Dec 21, 2020
RL78/G14, H8/36109 Migration Guide from H8 to RL78: I/O Ports Rev.1.00 PDF216 KB日本語	Application Note	Dec 21, 2020
RL78/G14, H8/36109 Migration Guide from H8 to RL78: IIC2 Rev.1.00 PDF261 KB日本語	Application Note	Dec 21, 2020
RL78/G14, H8/36109 Migration Guide from H8 to RL78: Power supply circuit Rev.1.00 PDF224 KB日本語	Application Note	Dec 21, 2020
RL78/G14, H8/36109 Migration Guide from H8 to RL78: Power-Down Modes Rev.1.00 PDF501 KB日本語	Application Note	Dec 21, 2020
RL78/G14, H8/36109 Migration Guide from H8 to RL78: ROM (Flash memory) Rev.1.00 PDF283 KB日本語	Application Note	Dec 21, 2020
RL78/G14, H8/36109 Migration Guide from H8 to RL78: Realtime Clock (RTC) Rev.1.00 PDF380 KB日本語	Application Note	Dec 21, 2020
RL78/G14, H8/36109 Migration Guide from H8 to RL78: SCI3 Rev.1.00 PDF439 KB日本語	Application Note	Dec 21, 2020
RL78/G14, H8/36109 Migration Guide from H8 to RL78: Timer V Rev.1.00 PDF481 KB日本語	Application Note	Dec 21, 2020
RL78/G14, H8/36109 Migration Guide from H8 to RL78: Watchdog Timer Rev.1.00 PDF248 KB日本語	Application Note	Dec 21, 2020
RL78/G14, H8/36109 Migration Guide from H8 to RL78: Timer B1 Rev.1.00 PDF323 KB日本語	Application Note	Dec 18, 2020
RL78/G14, H8/36109 Migration Guide from H8 to RL78: Timer RC Rev.1.00 PDF413 KB日本語	Application Note	Dec 18, 2020
RL78/G14, H8/36109 Migration Guide from H8 to RL78: Timer RD Rev.1.00 PDF551 KB日本語	Application Note	Dec 7, 2020
7-Segment LED Lighting Control (Arduino API) Rev.1.00 PDF951 KB日本語 Related Files: Sample Code	Application Note	Jul 10, 2020
Arduino API Introduction Guide Rev.1.00 PDF1.65 MB日本語	Application Note	Jun 30, 2020
RL78/G13, 78K0/Kx2 Migration Guide from 78K0 to RL78:Serial Interface IIC0 to Serial Interface IICA Rev.1.00 PDF330 KB日本語	Application Note	Nov 11, 2019
IEC60730/60335 Self Test Library of CARL78 for RL78 MCU extended Application Notes (R01AN4823EJ0110) Rev.1.10 PDF2.36 MB日本語 Related Files: Sample Code	Application Note	Oct 9, 2019
IEC60730/60335 Self Test Library of CCRL78 for RL78 MCU extended Application Notes (R01AN4819EJ0110) Rev.1.10 PDF2.09 MB日本語 Related Files: Sample Code	Application Note	Oct 9, 2019
RL78/G13, 78K0/Kx2 Migration Guide from 78K0 to RL78: Standby Function Rev.1.00 PDF262 KB日本語	Application Note	Oct 4, 2019
RL78/G13, 78K0/Kx2 Migration Guide from 78K0 to RL78: Interrupt Functions Rev.1.00 PDF464 KB日本語	Application Note	Sep 12, 2019
RL78/G13, 78K0/Kx2 Migration Guide from 78K0 to RL78: A/D Converter Rev.1.00 PDF446 KB日本語	Application Note	Sep 9, 2019
RL78/G13, 78K0/Kx2 Migration Guide from 78K0 to RL78: Serial interface CSIA0 to Serial Array Unit Rev.1.00 PDF338 KB日本語	Application Note	Jul 31, 2019
RL78/G13, 78K0/Kx2 Migration Guide from 78K0 to RL78: Serial interface UART0 to Serial Array Unit Rev.1.00 PDF434 KB日本語	Application Note	Jul 24, 2019
RL78/G13, 78K0/Kx2 Migration Guide from 78K0 to RL78: Serial interface UART6 to Serial Array Unit Rev.1.00 PDF441 KB日本語	Application Note	Jul 24, 2019
RL78/G13, 78K0/Kx2 Migration Guide from 78K0 to RL78: Serial interfaces CSI10 and CSI11 to Serial Array Unit Rev.1.00 PDF278 KB日本語	Application Note	Jul 5, 2019
RL78/G13, 78K0/Kx2 Migration Guide from 78K0 to RL78: Power-on-Clear Circuit, Low-Voltage Detector Rev.1.00 PDF390 KB日本語	Application Note	Jun 28, 2019
RL78/G13, 78K0/Kx2 Migration Guide from 78K0 to RL78: Watch timer to Real-time clock Rev.1.00 PDF387 KB日本語	Application Note	Jun 7, 2019
RL78/G13, 78K0/Kx2 Migration Guide from 78K0 to RL78: Watchdog Timer Rev.1.00 PDF387 KB日本語	Application Note	Jun 4, 2019
RL78/G13, 78K0/Kx2 Migration Guide from 78K0 to RL78: Reset function Rev.1.00 PDF253 KB日本語	Application Note	May 31, 2019
RL78/G13, 78K0/Kx2 Migration Guide from 78K0 to RL78: CPU architecture Rev.1.00 PDF222 KB日本語	Application Note	May 24, 2019
RL78/G13, 78K0/Kx2 Migration Guide from 78K0 to RL78: Port Functions Rev.1.00 PDF324 KB日本語	Application Note	May 16, 2019
CAN Controller Usage: Applications and Frequently Asked Questions Rev.2.03 PDF1.81 MB	Application Note	May 15, 2019
RL78/G13, 78K0/Kx2 Migration Guide from 78K0 to RL78: Clock Generator Rev.1.00 PDF373 KB日本語	Application Note	May 8, 2019
RL78/G13, 78K0/Kx2 Migration Guide from 78K0 to RL78: 16-Bit Timer/Event Counter 00 and 01 to Timer Array Unit Rev.1.00 PDF640 KB日本語	Application Note	Mar 29, 2019
RL78/G13, 78K0/Kx2 Migration Guide from 78K0 to RL78: 8-Bit Timer/Event Counters 50 and 51 to Timer Array Unit Rev.1.00 PDF470 KB日本語	Application Note	Mar 29, 2019
RL78/G13, 78K0/Kx2 Migration Guide from 78K0 to RL78: 8-Bit Timers H0 and H1 to Timer Array Unit Rev.1.00 PDF503 KB日本語	Application Note	Mar 29, 2019
RL78/G13, 78K0/Kx2 Migration Guide from 78K0 to RL78: Clock Output/ Buzzer Output Control Circuit Rev.1.00 PDF317 KB日本語	Application Note	Mar 29, 2019
RL78/G13, 78K0/Kx2 Migration Guide from 78K0 to RL78: Key Interrupt Rev.1.00 PDF316 KB日本語	Application Note	Mar 29, 2019
RL78/G13, 78K0/Kx2 Migration Guide from 78K0 to RL78: Multiplier/Divider Rev.1.00 PDF391 KB日本語	Application Note	Mar 29, 2019
RL78/G13, 78K0/Kx2 Migration Guide from 78K0 to RL78: Option byte Rev.1.00 PDF330 KB日本語	Application Note	Mar 29, 2019
QE for USB: A Dedicated Tool for USB. Usage Guide Rev.1.01 PDF864 KB日本語 Related Files: QE for USB: A Dedicated Tool for USB. Usage Guide Rev.1.00 - Sample Code	Application Note	Mar 22, 2019
Random Number Generator Rev.1.02 PDF560 KB	Application Note	Nov 28, 2018
RL78/G14, R8C/36M Group Migration Guide from R8C to RL78: Flash Memory Rev.1.00 PDF412 KB日本語	Application Note	Oct 26, 2018
RL78/G14, R8C/36M Group Migration Guide from R8C to RL78: D/A converter Rev.1.00 PDF305 KB日本語	Application Note	Sep 26, 2018
RL78/G14, R8C/36M Group Migration Guide from R8C to RL78: Power Control Rev.1.00 PDF380 KB日本語	Application Note	Sep 5, 2018
RL78/G14, R8C/36M Group Migration Guide from R8C to RL78: Reset Function Rev.1.00 PDF199 KB日本語, 简体中文	Application Note	Jun 27, 2018
RL78/G14, R8C/36M Group Migration Guide from R8C to RL78: I2C bus Interface (R01AN4107EJ0100) Rev.1.00 PDF181 KB日本語, 简体中文	Application Note	May 8, 2018
RL78/G14, R8C/36M Group Migration Guide from R8C to RL78: Synchronous Serial Communication Unit (SSU) Rev.1.00 PDF1.35 MB日本語 Related Files: Sample Code	Application Note	Apr 19, 2018
IEC60730/60335 Self Test Library of CCRL78 for RL78 MCU Application Notes (R01AN4822EJ0210) PDF3.59 MB日本語 Related Files: Sample Code	Application Note	Feb 8, 2018
RL78/G14, R8C/36M Group Migration Guide from R8C to RL78: Timer RC to Timer Array Unit Rev.1.00 PDF695 KB日本語 Related Files: Sample Code RL78/G14、R8C/36Mグループ R8CからRL78への移行ガイド：タイマRC→タイマ・アレイ・ユニット Rev.1.01 - Sample Code	Application Note	Jan 24, 2018
RL78 Software Migration Guide Source Code Migration from Assembly Language to C Language CC-RL Rev.1.01 PDF1.64 MB日本語, 简体中文	Application Note	Jan 23, 2018
RL78/G14, R8C/36M Group Migration Guide from R8C to RL78: Serial Interface Rev.1.00 PDF1.42 MB日本語 Related Files: Sample Code	Application Note	Dec 22, 2017
RL78/G14, R8C/36M Group Migration Guide from R8C to RL78: A/D Converter Rev.1.00 PDF1.74 MB日本語 Related Files: Sample Code	Application Note	Dec 21, 2017
RL78 Troubleshooting of the LCD controller/driver Rev.1.00 PDF269 KB日本語	Application Note	Nov 17, 2017
RL78 PWM filtered output to create DAC DC output Rev.1.00 PDF1.38 MB Related Files: Sample Code	Application Note	Aug 10, 2017
RL78/G14, R8C/36M Group Migration Guide from R8C to RL78: Timer RB to Timer Array Unit Rev.1.00 PDF1.41 MB日本語 Related Files: Sample Code RL78/G14、R8C/36Mグループ R8CからRL78への移行ガイド：タイマRB→タイマ・アレイ・ユニット Rev.1.00 - Sample Code	Application Note	Aug 1, 2017
RL78/G14, R8C/36M Group Migration Guide from R8C to RL78: Timer RF to Timer Array Unit Rev.1.00 PDF662 KB日本語 Related Files: Sample Code RL78/G14, R8C/36Mグループ R8CからRL78への移行ガイド：タイマRF Rev.1.00 - Sample Code	Application Note	Aug 1, 2017
Current Consumption Tuning Solution for RL78 family (E2 Emulator, e² studio) Rev.1.00 PDF2.07 MB日本語	Application Note	Jul 16, 2017
Current Consumption Tuning Solution for RL78 family (E2 Emulator,CS+) Rev.1.00 PDF1.91 MB日本語	Application Note	Jul 16, 2017
RL78 Family Software-based Part Number Reading Out Rev.1.00 PDF242 KB日本語, 简体中文	Application Note	May 26, 2017
IAR Embedded Workbench for RL78 Programming Techniques Rev.1.00 PDF701 KB	Application Note	Apr 14, 2017
RL78 Family C compiler CC-RL Programming Techniques Rev.1.10 PDF1.21 MB日本語	Application Note	Apr 10, 2017
RL78 Family RL78 Hardware CRC Functions Rev.1.00 PDF1.22 MB Related Files: Sample Code	Application Note	Jan 24, 2017
Replacement Guide for R8C Family to RL78 Family (CcnvNC30) Rev.1.00 PDF987 KB日本語, 简体中文 Related Files: Sample Code R8CファミリからRL78ファミリへの置き換えガイド(CcnvNC30) Rev.1.00 - Sample Code 从R8C转至RL78的迁移指南（CcnvNC30） Rev.1.00 - Sample Code	Application Note	Dec 22, 2016
Replacement Guide from 78K0 Family to RL78 Family (CcnvCA78K0) Rev.1.00 PDF1.47 MB日本語, 简体中文 Related Files: Sample Code 从78K0转至RL78的迁移指南（CcnvCA78K0） Rev.1.00 - Sample Code	Application Note

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High-function LCD Microcontrollers with USB 2.0/Rapid Charging Support for Sensor Modules and Healthcare Devices

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RL78/L1C

High-function LCD Microcontrollers with USB 2.0/Rapid Charging Support for Sensor Modules and Healthcare Devices

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RL78/L1C Block Diagram

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