RL78/I1C microcontrollers feature integrated functions for high precision smart electricity metering, such as 24-bit Delta-Sigma A/D operation, AES H/W integration, up to 256 KB flash line-up, a 32-bit MAC (Multiply and Accumulation) function, independent power supply for RTC and enhance battery pin (Vbat) function for AC-off operation, and Hardware zero cross detection. Performance is enhanced with a high temperature coefficient internal reference voltage. A segment LCD driver supports 8-COM.

Features

  • CPU: RL78 core, Max. 32MHz
  • Voltage: 1.7V to 5.5V
  • Package: 64 to 100-pin QFP
  • Memory: SRAM Max. 16KB, Program Flash Max. 256KB

Applications

  • Metering

Documentation & Downloads

Title Other Languages Type Format File Size Date
Datasheets & Errata
RL78/I1C Datasheet Datasheet PDF 1.02 MB
User Guides & Manuals
List of MCUs supported by PG-FP5 日本語 Manual PDF 214 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: Project Operation 日本語 Manual PDF 5.50 MB
RL78/I1C User's Manual: Hardware 日本語 Manual PDF 10.38 MB
RL78 Software Migration Guide CS+ to e2 studio Migration (CC-RL) 日本語 Guide PDF 3.23 MB
RI78V4 Real-time OS for RL78 Family (Suppoeted by CS+) Trial Software Further note 日本語 Manual PDF 128 KB
RL78 family User's Manual: Software 日本語 Manual PDF 1.45 MB
Technical Updates
Restriction regarding reading data Flash memory 日本語 Technical Update PDF 213 KB
Restriction regarding Watchdog timer interrupt 日本語 Technical Update PDF 154 KB
RL78/I1C RTC with Independent Power Supply The Limitation Addition Regarding Simultaneous Use of Alarm Interrupt and Periodic Interrupt and Reading RTC Count 日本語 Technical Update PDF 725 KB
Regarding the precaution addition of 32-bit multiply-accumulator interrupt operation 日本語 Technical Update PDF 144 KB
Precaution of using SNOOZE mode 日本語 Technical Update PDF 380 KB
Application Notes & White Papers
RL78/G14, H8/36109 Migration Guide from H8 to RL78: ROM (Flash memory) 日本語 Application Note PDF 283 KB
RL78/G14, H8/36109 Migration Guide from H8 to RL78: Power supply circuit 日本語 Application Note PDF 224 KB
RL78/G14, H8/36109 Migration Guide from H8 to RL78: Band-Gap Regulator, Power-On Reset & Low-Voltage Detection Circuits 日本語 Application Note PDF 264 KB
RL78/G14, H8/36109 Migration Guide from H8 to RL78: Watchdog Timer 日本語 Application Note PDF 248 KB
RL78/G14, H8/36109 Migration Guide from H8 to RL78: Realtime Clock (RTC) 日本語 Application Note PDF 380 KB
RL78/G14, H8/36109 Migration Guide from H8 to RL78: Power-Down Modes 日本語 Application Note PDF 501 KB
RL78/G14, H8/36109 Migration Guide from H8 to RL78: Clock Pulse Generators 日本語 Application Note PDF 383 KB
RL78/G14, H8/36109 Migration Guide from H8 to RL78: I/O Ports 日本語 Application Note PDF 216 KB
RL78/G14, H8/36109 Migration Guide from H8 to RL78: Exception Handling 日本語 Application Note PDF 378 KB
RL78/G14, H8/36109 Migration Guide from H8 to RL78: CPU architecture 日本語 Application Note PDF 290 KB
RL78/G14, H8/36109 Migration Guide from H8 to RL78: A/D Converter 日本語 Application Note PDF 419 KB
RL78/G14, H8/36109 Migration Guide from H8 to RL78: IIC2 日本語 Application Note PDF 261 KB
RL78/G14, H8/36109 Migration Guide from H8 to RL78: SCI3 日本語 Application Note PDF 439 KB
RL78/G14, H8/36109 Migration Guide from H8 to RL78: 14-Bit PWM 日本語 Application Note PDF 304 KB
RL78/G14, H8/36109 Migration Guide from H8 to RL78: Timer V 日本語 Application Note PDF 481 KB
RL78/G14, H8/36109 Migration Guide from H8 to RL78: Timer B1 日本語 Application Note PDF 323 KB
RL78/G14, H8/36109 Migration Guide from H8 to RL78: Timer RC 日本語 Application Note PDF 413 KB
RL78/G14, H8/36109 Migration Guide from H8 to RL78: Timer RD 日本語 Application Note PDF 551 KB
- Onboard LED Flashing Control (Arduino API) 日本語 Application Note PDF 620 KB
- Onboard LED Flashing Control (Arduino API) 日本語 Application Note PDF 514 KB
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
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 Family Software-based Part Number Reading Out 日本語, 简体中文 Application Note PDF 242 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
Replacement Guide from 78K0 Family to RL78 Family (CcnvCA78K0) 日本語, 简体中文 Application Note PDF 1.47 MB
RL78 Family SHA Hash Function Library Introduction Guide 日本語 Application Note PDF 165 KB
RX Family, RL78 Family, 78K0R/Kx3-L Micron Technology M25P Series Serial Flash memory Control Software 日本語 Application Note PDF 2.46 MB
RX Family, RL78 Family, 78K0R/Kx3-L Micron Technology M45PE Series Serial Flash memory Control Software 日本語 Application Note PDF 2.02 MB
RX Family, RL78 Family, 78K0R/Kx3-L Renesas R1EX25xxx Series Serial EEPROM Control Software 日本語 Application Note PDF 1.79 MB
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 Digital Signal Controller Library - Fixed point and Motor Application Note PDF 764 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
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
[Evaluation Software] CS+ for CC V8.05.00 (Single Download) 日本語 Evaluation Software ZIP 719.07 MB
CS+ Code Generator for RL78 (CS+ for CC) V2.21.00 日本語 Upgrade - IDE ZIP 42.28 MB
AP4 for RL78 V1.20.00 日本語 Upgrade - IDE ZIP 32.42 MB
e² studio 2021-01 installer (Offline installer) 日本語 Upgrade - IDE EXE 1,637.73 MB
CS+ Code Generator for RL78 (CS+ for CA,CX) V2.21.00 日本語 Upgrade - IDE ZIP 41.42 MB
Software for floating license management V2.04.00 日本語 Upgrade - Compiler ZIP 31.54 MB
License Manager V2.04.00 日本語 Upgrade - Compiler ZIP 6.69 MB
CS+ for CC common program V8.05.00 日本語 Upgrade - IDE ZIP 243.98 MB
Differential update program V8.05.00 for CS+ for CC common program V8.02.00 or later 日本語 Upgrade - IDE ZIP 80.87 MB
RL78 Family C Compiler Package V1 (without IDE) V1.10.00 日本語 Upgrade - Compiler ZIP 19.65 MB
RL78 Compiler CC-RL V1.10.00 日本語 Upgrade - Compiler ZIP 16.61 MB
[Evaluation Software] CS+ for CA,CX V4.05.00 (Single Download) 日本語 Evaluation Software ZIP 483.78 MB
CS+ for CA,CX common program V4.05.00 日本語 Upgrade - IDE ZIP 196.94 MB
Code Generator for RL78 (CS+ for CA,CX) V2.20.00 日本語 Upgrade - IDE ZIP 33.62 MB
e² studio 2020-10 Linux Host 日本語 Upgrade - IDE XZ 570.04 MB
e² studio 2020-10 installer (Offline installer) 日本語 Upgrade - IDE EXE 1,618.03 MB
[Evaluation Software] CS+ for CC V8.04.00 (Single Download) 日本語 Evaluation Software EXE 688.19 MB
Onboard LED Flashing Control (Arduino API) - Sample Code 日本語 Sample Code ZIP 997 KB
Onboard LED Flashing Control (Arduino API) Sample Code ZIP 1.78 MB
[Evaluation Software] CS+ for CA,CX V4.04.00(2020.07) (Single Download) 日本語 Evaluation Software ZIP 458.56 MB
e² studio 2020-04 installer (Offline installer) 日本語 Evaluation Software EXE 1,263.99 MB
e² studio V7.8.0 installer (Offline installer) 日本語 Evaluation Software EXE 1,396.16 MB
License Manager V2.03.01 日本語 Upgrade - Compiler ZIP 6.64 MB
Software for floating license management V2.03.01 日本語 Upgrade - Compiler EXE 31.41 MB
Code Generator for RL78 (CS+ for CA,CX) V2.19.00 日本語 Upgrade - IDE EXE 33.34 MB
Update Manager V2.03.01 日本語 Upgrade - IDE ZIP 3.44 MB
CS+ for CA,CX common program V4.04.00 日本語 Upgrade - IDE EXE 197.40 MB
Code Generator for RL78 (CS+ for CC) V2.19.00 日本語 Upgrade - IDE EXE 33.33 MB
RL78 Compiler CC-RL V1.09.00 日本語 Upgrade - Compiler EXE 16.88 MB
RL78 Family C Compiler Package V1 (without IDE) V1.09.00 日本語 Evaluation Software EXE 19.83 MB
Programming GUI for PG-FP5 V2.17 日本語 Upgrade - Programmer ZIP 56.45 MB
Firmware for PG-FP5 V2.17 日本語 Upgrade - Programmer ZIP 289 KB
USB Driver for Renesas MCU Tools(E2,E2 Lite,IE850,IE850A,PG-FP5) V2.77.00(for 32-bit version of Windows OS) 日本語 Upgrade - IDE ZIP 3.09 MB
Data Flash Library Type04 Package Ver.2.00 for the RL78 Family [for the CA78K0R/CC-RL Compiler] 日本語 Upgrade - Programmer ZIP 1.64 MB
e² studio 6.3.0 installer (Offline installer) 日本語 Upgrade - IDE EXE 952.89 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
- 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 Family SHA Hash Function Library Introduction Guide 日本語 Sample Code ZIP 1.43 MB
Software for Floating License Management V1.00.00 日本語 Upgrade - Compiler EXE 134.85 MB
Renesas Tool License Manager V1.25.00 日本語 Upgrade - Compiler EXE 3.35 MB
- RX Family, RL78 Family, 78K0R/Kx3-L Micron Technology M25P Series Serial Flash memory Control Software 日本語 Sample Code ZIP 2.47 MB
- RX Family, RL78 Family, 78K0R/Kx3-L Micron Technology M45PE Series Serial Flash memory Control Software 日本語 Sample Code ZIP 2.03 MB
- RX Family, RL78 Family, 78K0R/Kx3-L Renesas R1EX25xxx Series Serial EEPROM Control Software 日本語 Sample Code ZIP 1.80 MB
Renesas Flash Programmer V2.05.03 Upgrade 日本語 Upgrade - Programmer EXE 47.62 MB
[Free-of-charge edition] Renesas Flash Programmer V2.05.03 日本語 Evaluation Software EXE 47.62 MB
RL78,78K0R Compiler CA78K0R V1.72 日本語 Upgrade - Compiler EXE 18.81 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
[Trial Software] RI78V4 V2.00.00 Real-time OS for RL78 Family (supported by CS+) 日本語 Upgrade - OS ZIP 13.98 MB
e² studio 4.0.0.26 installer (Offline installer) 日本語 Upgrade - IDE EXE 726.31 MB
Programming GUI for PG-FP5 V2.13 Upgrade - Programmer EXE 58.78 MB
USB Driver for Renesas E-Series V1.01.00 日本語 Upgrade - IDE EXE 5.82 MB
- RL78 Family VDE Certified IEC60730/60335 Self Test Library Sample Code ZIP 3.55 MB
RL78 Digital Signal Controller Library - Fixed point and Motor Sample Code ZIP 647 KB
Tool News
[Upgrade to revision] CS+ Code Generator for RL78 (CS+ for CC) V2.21.00, CS+ Code Generator for RL78 (CS+ for CA,CX) V2.21.00, e² studio Code Generator Plug-in V2.18.0, AP4 for RL78 V1.20.00, Applilet3 for RL78 V1.20.00 日本語 Tool News - Release PDF 178 KB
[Notes] Renesas Flash Programmer 日本語 Tool News - Note PDF 29 KB
[Upgrade to revision] Programming GUI for PG-FP6 Flash Memory Programmer (FP6 Terminal) V1.05.01 日本語 Tool News - Release PDF 57 KB
[Upgrade to revision] Renesas Flash Programmer V3.08.01 日本語 Tool News - Release PDF 81 KB
[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
Code Generator for RL78 CS+ Code Generator for RL78 (CS+ for CC/CA,CX) V2.21.00, e2 studio Code Generator Plug-in V2.18.0, AP4 for RL78 V1.20.00, Applilet3 for RL78 V1.20.00 Release Note 日本語 Release Note PDF 835 KB
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
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
[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
Smart Meter Solutions Catalog 日本語 Brochure PDF 1.79 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
Parameter File for RL78/I1C group: PR5-R5F10N V1.01 日本語 Software & Tools - Others ZIP 8 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
RL78/I1A The Ultimate Lighting Microcontroller Flyer PDF 540 KB

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 V2 Real-time OS for RL78 Family ITRON OS μITRON Specification real-time OS for RL78 Family [Required IDE : CS+]

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
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
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
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
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