The ultra low power RL78/L1A microcontroller family with embedded LCD has enhanced analog peripherals such as 12bit A/D converters, 12bit 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 80pin and 100pin LFQFP packages, this MCU line has been developed especially for healthcare bio-sensing applications such as blood glucose meter. It is also suitable for many other appliances which needs low power with LCD and rich analog peripherals.

Features

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

Applications

  • Healthcare
  • Home Appliance

Documentation & Downloads

Title Other Languages Type Format File Size Date
Datasheets & Errata
RL78/L1A Datasheet Datasheet PDF 845 KB
Bill of Material D014626 02 RPBRL78L1A BOM Datasheet CSV 5 KB
User Guides & Manuals
List of MCUs supported by PG-FP6 日本語 Manual PDF 216 KB
List of MCUs supported by PG-FP5 日本語 Manual PDF 214 KB
Renesas Flash Programmer V3.08 Flash memory programming software User's Manual 日本語 Manual PDF 973 KB
PG-FP6 V1.05 Flash Memory Programmer User's Manual 日本語 Manual PDF 3.13 MB
CS+ V8.04.00 Integrated Development Environment User's Manual: RL78 Debug Tool 日本語 Manual PDF 5.76 MB
CS+ V8.04.00 Integrated Development Environment User's Manual: Project Operation 日本語 Manual PDF 5.50 MB
RL78/L1A User's Manual: Hardware 日本語 Manual PDF 9.92 MB
RPBRL78/L1A Quick Start Guide Quick Start Guide PDF 109 KB
RPBRL78/L1A Promotion Board User's Manual Manual PDF 1.53 MB
RL78 Software Migration Guide CS+ to e2 studio Migration (CC-RL) 日本語 Guide PDF 3.23 MB
RL78 Family EEPROM Emulation Library Pack01 Japanese Release user's manual 日本語 Manual PDF 2.16 MB
RL78 family User's Manual: Software 日本語 Manual PDF 1.45 MB
Application Notes & White Papers
- RL78/G14 Modbus ASCII/RTU 日本語 Application Note PDF 1.77 MB
RL78/G14 Modbus ASCII/RTU 日本語 Application Note PDF 1.77 MB
PG-FP6 Usage of Communications Commands 日本語 Application Note PDF 369 KB
Renesas Flash Programmer Usage from the Command Line 日本語 Application Note PDF 208 KB
RL78/L1A Promotion Board Sample Code for IAR Application Note PDF 1.38 MB
- RL78/L1A Promotion Board Sample Code for IAR Application Note PDF 1.38 MB
PCB-Design for Improved EMC / EMV Application Note PDF 1.86 MB
Current Consumption Tuning Solution for RL78 family (E2 Emulator,CS+) 日本語 Application Note PDF 1.91 MB
Current Consumption Tuning Solution for RL78 family (E2 Emulator, e² studio) 日本語 Application Note PDF 2.07 MB
- RL78/L1A 12-BIT A/D CONVERTER (Single scan mode, Software trigger) CC-RL 日本語 Application Note PDF 564 KB
RL78/L1A 12-BIT A/D CONVERTER (Single scan mode, Software trigger) CC-RL 日本語 Application Note PDF 564 KB
RL78 Family C compiler CC-RL Programming Techniques 日本語 Application Note PDF 1.21 MB
Replacement Guide for R8C Family to RL78 Family (CcnvNC30) 日本語, 简体中文 Application Note PDF 987 KB
- RL78/L1A Promotion Board Sample Code for e2studio Application Note PDF 369 KB
RL78/L1A Promotion Board Sample Code for e2studio Application Note PDF 369 KB
Replacement Guide from 78K0 Family to RL78 Family (CcnvCA78K0) 日本語, 简体中文 Application Note PDF 1.47 MB
- RL78/L1A Serial Array Unit (UART Communication) CC-RL 日本語 Application Note PDF 541 KB
RL78/L1A Serial Array Unit (UART Communication) CC-RL 日本語 Application Note PDF 541 KB
RL78 Family SHA Hash Function Library Introduction Guide 日本語 Application Note PDF 165 KB
RL78 Family SPI mode MultiMediaCard Driver: Introduction Guide 日本語 Application Note PDF 344 KB
RL78 Family Open Source FAT File System M3S-TFAT-Tiny: Introduction Guide 日本語 Application Note PDF 189 KB
RL78 Family FFT Library: Introduction Guide 日本語 Application Note PDF 131 KB
RL78 Family Sound Playback/Compression System (Original ADPCM Codec) M3S-S2-Tiny: Introduction Guide 日本語 Application Note PDF 153 KB
RL78 Family VDE Certified IEC60730/60335 Self Test Library Application Note PDF 1.42 MB
RL78 Family RL78 Internal Temperature Sensor Calibration Application Note PDF 197 KB
RL78 Minimizing Power Consumption when Sensing Switch Inputs Application Note PDF 104 KB
RL78 Microcontrollers (RL78 Protocol A) Programmer Edition Application Note 日本語, 简体中文 Application Note PDF 3.28 MB
RL78 Family Notes and Countermeasures Against Noise 日本語, 简体中文 Application Note PDF 230 KB
RL78 Software LCD Driver Application Note PDF 1.29 MB
PCNs & PDNs
Unification of a JEDEC tray and a embossed carrier tape for LQFP package (Additional Information & Correction) 日本語 Product Change Notice PDF 4.86 MB
Unification of a JEDEC tray and a embossed carrier tape for LQFP package 日本語 Product Change Notice PDF 3.74 MB
Unification of a JEDEC tray and a embossed carrier tape for LQFP package 日本語 Product Change Notice PDF 1.46 MB
Downloads
Code Generator Common (CS+ for CC) V1.19.00 日本語 Software ZIP 8.74 MB
Code Generator Common (CS+ for CA,CX) V1.16.00 日本語 Software ZIP 7.85 MB
Code Generator for RL78 (CS+ for CA,CX) V2.20.00 日本語 Software ZIP 33.62 MB
Code Generator for RL78 (CS+ for CC) V2.20.00 日本語 Upgrade - IDE ZIP 33.62 MB
[Free-of-charge edition] Renesas Flash Programmer V3.08.00 Linux edition 日本語 Evaluation Software ZIP 25.55 MB
Renesas Flash Programmer V3.08.00 Upgrade Linux edition 日本語 Upgrade - Programmer ZIP 25.54 MB
[Free-of-charge edition] Renesas Flash Programmer V3.08.00 日本語 Evaluation Software ZIP 74.85 MB
Renesas Flash Programmer V3.08.00 Upgrade 日本語 Upgrade - Programmer ZIP 74.85 MB
Programming GUI for PG-FP6 (FP6 Terminal) V1.05.00 日本語 Upgrade - Programmer ZIP 54.84 MB
[Evaluation Software] CS+ for CC V8.04.00 (Single Download) 日本語 Evaluation Software EXE 688.19 MB
[Evaluation Software] CS+ for CA,CX V4.04.00(2020.07) (Single Download) 日本語 Evaluation Software ZIP 458.56 MB
CS+ QE V9.04.00 Upgrade - IDE ZIP 4.02 MB
CS+ QE V9.04.00 Upgrade - IDE EXE 4.58 MB
RL78/G14 Modbus ASCII/RTU Sample Code ZIP 3.10 MB
- RL78/G14 Modbus ASCII/RTU Sample Code ZIP 3.10 MB
License Manager V2.03.01 日本語 Software ZIP 6.64 MB
CS+ for CA,CX common program V4.04.00 日本語 Upgrade - IDE EXE 197.40 MB
AP4 for RL78 V1.18.00 日本語 Software EXE 31.84 MB
Code Generator for RL78 (CS+ for CA,CX) V2.19.00 日本語 Software EXE 33.34 MB
Code Generator for RL78 (CS+ for CC) V2.19.00 日本語 Upgrade - IDE EXE 33.33 MB
Code Generator Common (CS+ for CA,CX) V1.15.00 日本語 Software EXE 8.41 MB
Programming GUI for PG-FP5 V2.17 日本語 Upgrade - Programmer EXE 56.68 MB
Firmware for PG-FP5 V2.17 日本語 Upgrade - Programmer ZIP 289 KB
CS+ Code Generator for RH850 V1.04.00 日本語 Software EXE 6.49 MB
- RL78/L1A Promotion Board Sample Code for IAR Sample Code ZIP 4.46 MB
RL78/L1A Promotion Board Sample Code for IAR Sample Code ZIP 4.46 MB
CS+ for CA,CX Device Information for RL78 V6.01.00 日本語 Upgrade - IDE EXE 16.89 MB
RL78/L1A Smart Body Fat Scale Batch Download Sample Code ZIP 3.64 MB
EEPROM Emulation Library Pack02 Package Ver.2.00(for CA78K0R/CC-RL Compiler) for RL78 Family 日本語 Upgrade - Programmer ZIP 7.49 MB
RL78/L1A 12-BIT A/D CONVERTER (Single scan mode, Software trigger) CC-RL 日本語 Sample Code ZIP 1.05 MB
- RL78/L1A 12-BIT A/D CONVERTER (Single scan mode, Software trigger) CC-RL 日本語 Sample Code ZIP 1.05 MB
- Replacement Guide for R8C Family to RL78 Family (CcnvNC30) Sample Code ZIP 1.42 MB
- R8CファミリからRL78ファミリへの置き換えガイド(CcnvNC30) Sample Code ZIP 2.86 MB
- 从R8C转至RL78的迁移指南(CcnvNC30) Sample Code ZIP 1.39 MB
RL78/L1A Promotion Board Sample Code for e2studio 日本語 Sample Code ZIP 551 KB
- RL78/L1A Promotion Board Sample Code for e2studio 日本語 Sample Code ZIP 551 KB
- Replacement Guide from 78K0 Family to RL78 Family (CcnvCA78K0) 日本語 Sample Code ZIP 2.08 MB
- 从78K0转至RL78的迁移指南(CcnvCA78K0) Sample Code ZIP 2.32 MB
RL78/L1A Serial Array Unit (UART Communication) CC-RL 日本語 Sample Code ZIP 769 KB
- RL78/L1A Serial Array Unit (UART Communication) CC-RL 日本語 Sample Code ZIP 769 KB
- RL78 Family SHA Hash Function Library Introduction Guide 日本語 Sample Code ZIP 1.43 MB
- RL78 Family SPI mode MultiMediaCard Driver: Introduction Guide 日本語 Sample Code ZIP 1.29 MB
- RL78 Family Open Source FAT File System M3S-TFAT-Tiny: Introduction Guide 日本語 Sample Code ZIP 1.83 MB
- RL78 Family FFT Library: Introduction Guide 日本語 Sample Code ZIP 1.60 MB
- RL78 Family Sound Playback/Compression System (Original ADPCM Codec) M3S-S2-Tiny: Introduction Guide 日本語 Sample Code ZIP 1.51 MB
- RL78 Family VDE Certified IEC60730/60335 Self Test Library Sample Code ZIP 3.55 MB
- RL78 Family RL78 Internal Temperature Sensor Calibration Sample Code ZIP 310 KB
FPGA data for PG-FP5 V4 日本語 Upgrade - Programmer ZIP 162 KB
Tool News
[Notification] Flash Programmer Survey Invitation 日本語 Tool News - Notification PDF 29 KB
[Upgrade to revision] CS+ Code Generator for RL78 (CS+ for CC) V2.20.00, CS+ Code Generator for RL78 (CS+ for CA,CX) V2.20.00, e² studio Code Generator Plug-in V2.16.0 日本語 Tool News - Release PDF 178 KB
[Upgrade to revision] Renesas Flash Programmer V3.08.00 日本語 Tool News - Release PDF 83 KB
[Upgrade to revision] Programming GUI for PG-FP6 Flash Memory Programmer (FP6 Terminal) V1.05.00 日本語 Tool News - Release PDF 72 KB
[Upgrade to revision] Renesas Flash Programmer V3.06.02 日本語 Tool News - Release PDF 80 KB
[Upgrade to revision] Programming GUI for PG-FP6 Flash Memory Programmer (FP6 Terminal) V1.04.02 日本語 Tool News - Release PDF 74 KB
[Notification] Renesas Flash Programmer V3.06.01 Addition of Supported Devices and End of Device Support 日本語 Tool News - Notification PDF 28 KB
[Upgrade to revision] Programming GUI for PG-FP6 Flash Memory Programmer (FP6 Terminal) V1.04.01 日本語 Tool News - Release PDF 73 KB
[Notification] "Chance to Win a License!" Join Our Compiler Survey - 5 Winners to Receive Renesas Compiler License! - 日本語 Tool News - Notification PDF 125 KB
[Notes] RX Family TSIP(Trusted Secure IP) Module Firmware Integration Technology 日本語 Tool News - Note PDF 139 KB
Other
e² studio 2020-10 Release Note Release Note PDF 2.46 MB
CS+ Code Generator for RL78 (CS+ for CC/CA,CX) V2.20.00, e² studio Code Generator Plug-in V2.17.0 Release Note 日本語 Release Note PDF 708 KB
PG-FP6 Flash Memory Programmer Release Note 日本語 Release Note PDF 269 KB
Renesas Flash Programmer V3.08.00 Release Notes 日本語 Release Note PDF 283 KB
e² studio 2020-07 Release Note Release Note PDF 1.52 MB
CS+ for CC V8.04.00 Release Note 日本語 Release Note PDF 256 KB
CS+ Integrated Development Environment Package V8.04.00 Release Note 日本語 Release Note PDF 956 KB
Restriction regarding reading data Flash memory 日本語 Technical Update PDF 213 KB
[Flyer] E2Emulator[RTE0T00020KCE00000R] 日本語, 简体中文 Flyer PDF 381 KB
[Flyer] Renesas Software and Tools Flash Memory Programmer PG-FP6 日本語 Flyer PDF 417 KB
Building Automation Brochure 日本語 Brochure PDF 6.65 MB
Renesas Software and Tools Flash Memory Programmer PG-FP6 日本語 Brochure PDF 619 KB
Renesas RL78 Family Microcontrollers Brochure 日本語 Flyer PDF 5.89 MB
RL78/L1A Oscillation circuit characteristics 日本語 Software & Tools - Others PDF 95 KB
Restriction regarding Watchdog timer interrupt 日本語 Technical Update PDF 154 KB
RPBRL78/L1A Programmable Signal Generator / Oscilloscope Demonstration Others PDF 477 KB
Smart Meter Solutions Catalog 日本語 Brochure PDF 1.79 MB
Restriction on MCU Activation when Power is Supplied 日本語 Technical Update PDF 144 KB
Correction for Incorrect Description Notice RL78/L1A Descriptions in the User's Manual: Hardware Rev. 1.00 Changed 日本語 Technical Update PDF 204 KB
RL78 Microcontrollers Brochure PDF 5.80 MB
Powered Up and Ready to Go Renesas/Intersil Joint Brochure Brochure PDF 5.27 MB
RL78The True Low Power Microcontroller Platform Brochure PDF 1.10 MB
RL78/L1A:Supply current characteristics (IDD-VDD) Others PDF 1.50 MB
RL78/L1A:VOH-IOH (Drive Current) Others PDF 613 KB
RL78/L1A:VOL-IOL (Drive Current) Others PDF 519 KB
Parameter File for RL78/L1A group: PR5-R5F11M V1.00 日本語 Software & Tools - Others ZIP 7 KB
[Flyer] Renesas Software and Tools e² studio: Integrated Development Environment Based on Eclipse Flyer PDF 930 KB
[Flyer] Renesas Software and Tools C Compiler Package for RL78 Family 日本語 Flyer PDF 414 KB
Renesas General-Purpose Microcontrollers/Microprocessors Lineup Catalog 日本語 Brochure PDF 6.12 MB
Renesas RL78 Family MCU Brochure PDF 4.62 MB
RL78 - The Ultimate Low Power Microcontroller Platform Flyer PDF 3.57 MB

Software / Tools

Title Type Description Company
AP4, Applilet Code Generator Peripheral I/O driver generator compatible with third-party compilers and GNU compiler (for RZ, V850, RX, RL78, and 78K) Renesas
Code Generator Plug-in Code Generator Automatic driver generation tool for internal peripheral I/O modules through GUI settings [Standard features for Renesas IDE "e² studio" and CS+] [Support MCU/MPU: RL78, V850, 78K, RX] Renesas
Code Flash Libraries (Flash Self Programming Libraries) Self Programming Library (Flash Library) Libraries for the reprogramming of code area flash memory, including EEPROM emulation libraries for the code areas of 78K-family products Renesas
Data Flash Libraries Self Programming Library (Flash Library) Libraries for the reprogramming of data flash memory, including EEPROM emulation libraries for the data areas of RL78-family products Renesas
FAT File System [M3S-TFAT-Tiny] for the RL78 Family File System FAT file system for RL78 Family Renesas
Sound Playback/Compression System [M3S-S2-Tiny] for RL78 Family Sound / Voice Sound playback system for RL78 Family Renesas
RI78V4 V1 Real-time OS for RL78 Family and 78K0R ITRON OS μITRON4.0 Specification real-time OS for RL78 Family and 78K0R [Required IDE : CS+] Renesas
RI78V4 V2 Real-time OS for RL78 Family ITRON OS μITRON Specification real-time OS for RL78 Family [Required IDE : CS+]

Renesas
C Compiler Package for RL78 Family Compiler/Assembler C Compiler Package for RL78 Family [Compiler: CC-RL] [IDE: without IDE (for using "e2 studio") or with CS+] Renesas
E2 emulator [RTE0T00020KCE00000R] Emulator On-chip debugging emulator. Also available as a flash memory programmer. [Support MCU/MPU: RA, RE, RH850, R-Car D1, RL78, RX] Renesas
E2 emulator Lite [RTE0T0002LKCE00000R] Emulator On-chip debugging emulator. Also available as a flash memory programmer. [Support MCU/MPU: RA, RE, RL78, RX] Renesas
CS+ IDE and Coding Tool Renesas integrated development environment (IDE) [Support MCU/MPU: RH850, V850, RX, RL78, 78K0R, 78K0] Important: CS+ is not generally promoted to U.S. and European customers. Renesas
e² studio IDE and Coding Tool Eclipse-based Renesas integrated development environment (IDE). (Note: You need to install compiler separately as an additional software) Renesas
PG-FP6 Programmer (Unit/SW) Flash memory programmer [Programming software: Dedicated GUI-based software, the "FP6 Terminal"] [Support MCU/MPU and devices: RA, RE, RX, RL78, RH850, Renesas Synergy, Power Management, Renesas USB Power Delivery Family, ICs for Motor Driver/Actuator Driver, SuperH RISC engine, V850, 78K, R8C] Renesas
Renesas Flash Programmer (Programming GUI) Programmer (Unit/SW) Flash memory programming software [Support MCU/MPU and devices: RA, RE, RX, RL78, RH850, Renesas Synergy, Power Management, Renesas USB Power Delivery Family, ICs for Motor Driver/Actuator Driver, V850, 78KR, 78K0] Renesas
Simulator for e² studio of RL78 Family Simulator Simulator for RL78 Family [Support IDE: e2 studio] (Note: This product is included in the Renesas IDE "e2 studio" and is not available separately.) Renesas
QE for Current Consumption: A Dedicated Tool for Current Measurement Solution Toolkit Development assistance tool helps to shorten the times taken in operations for the tuning of currents drawn. [Standard item in the "e² studio" and CS+ (CS+ for CC only) IDEs] [Support MCU/MPU: RX, RL78] Renesas

Boards & Kits

Part Number Title Type Company
RL78-L1A-PROMOTION-BOARD RL78/L1A Promotion Board Evaluation
SMART-BLOOD-PRESSURE-MONITOR Smart Blood Pressure Monitor Reference Design Evaluation
SMART-BODY-FAT-SCALE Smart Body Fat Scale Reference Design Evaluation
RL78/L1A-Promotion-Board RL78/L1A Promotion Board Evaluation