Overview
Description
C Compiler package (incl. CA78K0R, CA78K0) for RL78 and 78K Families is intended for the development of ROM-based systems for embedded applications. In addition to powerful optimization functions that help boost code efficiency and speed up program execution, this package provides extension functionality to support a broad range of embedded devices.
For 78K Family Users; Please use this product (CA78K0R, CA78K0).
Features
- ANSI-compliant
- Supports C89 and C99 (subset of functions (For example, // comments)).
- Superior optimization
- Optimization for reducing the size or speed of executable code is available.
- A multitude of optimization functions are easily accessible via the GUI.
- Interoperation with RL78, 78K0R and 78K0 architectures
- Interrupt handling can be accomplished by writing code in C.
- A variety of interrupt functions are provided.
- Development to match the usage application
- Supports Renesas IDE, CS+.
- Also supports execution from the command line.
- Learn More
Release Information
- Details of upgrade (See Tool News)
- Operating Environment
- Standard life cycle of Compilers (PDF | English, 日本語)
- Product Lineup
| Product Name | Version / Release Date | Note |
|---|---|---|
| C Compiler and IDE for RL78/78K Family | Ver.: CS+ V8.09.00 (CS+ for CA,CX V4.08.00) Released: Jan 20, 2023 | Compiler: CA78K0R (for RL78 and 78K0R) Latest Ver.: V1.72 Released: Mar 7, 2016 Compiler: CA78K0 (for 78K0) Latest Ver.: V1.30 Released: Nov 1, 2012 |
- Update CS+ if you are not already using the latest version.
FAQ
| Title |
|---|
| What are the advantages of using different memory models? |
| Supported character codes_CA78K0R |
| Load Module File Format (CA78K0R and CA78K0) |
Target Devices (Target Families)
- RL78 Family
- 78K Family**See details : Target Devices
Target Devices
Downloads
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| Type | Title | Date |
| Upgrade - Compiler | CcnvCA78K0R C Source Code Converter V1.00.02
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| Upgrade - Compiler | RL78,78K0R Compiler CA78K0R V1.72
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Documentation
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| Type | Title | Date |
| Tool News - Notification | PDF 143 KB 日本語 | |
| Tool News - Note | PDF 165 KB 日本語 | |
| Tool News - Note | PDF 74 KB 日本語 | |
| Tool News - Note | PDF 143 KB 日本語 | |
| Manual - Development Tools | PDF 2.03 MB 日本語 | |
| Manual - Development Tools | PDF 1.57 MB 日本語 | |
| Tool News - Note | PDF 79 KB 日本語 | |
| Tool News - Note | PDF 168 KB 日本語 | |
| Guide | PDF 249 KB 日本語 | |
| Guide | PDF 180 KB 日本語 | |
| Guide | PDF 163 KB 日本語 | |
| Guide | PDF 407 KB 日本語 | |
| Tool News - Release | PDF 213 KB 日本語 | |
| Tool News - Release | PDF 134 KB 日本語 | |
| Tool News - Note | PDF 63 KB 日本語 | |
| Guide | PDF 664 KB 日本語 | |
| Tool News - Release | PDF 150 KB 日本語 | |
| Tool News - Note | PDF 65 KB 日本語 | |
| Tool News - Note | PDF 229 KB 日本語 | |
| Manual - Development Tools | PDF 6.08 MB 日本語 | |
| Manual - Development Tools | PDF 7.89 MB 日本語 | |
| Manual - Development Tools | PDF 4.01 MB 日本語 | |
| Application Note |
PDF
1.04 MB
日本語
AI-generated Summary:
The document explains the development environment and tools for the RL78 family using CubeSuite+. It outlines the relationship between product development stages and tools, including planning, design, coding, compiling, debugging, and productization. CubeSuite+ integrates editors, compilers (CA78KOR), and debuggers (RL78 E1, IECUBE, and simulator). It also provides design tools for pin arrangement and automatic code generation. Typical CPU evaluation boards like QB-RSF100LE-TB and starter kits are introduced. Instructions for generating object module files (HEX and LMF) from sample code using CubeSuite+ are detailed, emphasizing project creation and build processes.
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| Manual - Development Tools | PDF 6.50 MB 日本語 | |
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24 items
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Additional Details
Product Lineup
| Product Name | IDE | Part Number |
|---|---|---|
| C Compiler and IDE for RL78/78K Family (Note1) | CS+(Note2) | R0C07800QSW01N(Note3) |
When ordering, please contact your local Renesas Electronics marketing office or distributor.
- This product is different from the C compiler package for RL78 family (CC-RL).
- CS+ is not promoted in America and Europe. Please contact your regional marketing/sales team for information.
- This part number is for ordering single license.
To order 5-, 10-, and 20-license products, append #L5, #LA, and #LT, respectively, to the end of the part number.
Product Components
- CS+ for CA,CX Common Program (with the debugging function)
- Compiler/Assembler/Linker (CA78K0R, CA78K0)
- Simulator
- Device Information
- CS+ Utilities
- Emulator Utilities
- USB Driver
- Update Manager
- Stack Usage Tracer
- Variables/Functions Information File Generator (targets: RL78 family and 78K0R)
- Variables Information File Generator (target: 78K0)
- Memory Bank Relocation Support Tool (target: 78K0)
Resources
Download
Note that simply entering the license key printed on a purchased compiler package upgrades to the commercial edition, so you don’t have to re-install CS+ from scratch.
For more information, refer to the License information on the CS+ Information for Users.
Product Updates
Online updates are available via the CS+ Update Manager.
We recommend using the latest version.
Device Information
You can add the support devices by updating the Device Information (DevInfo_RL78, DevInfo_78K).
Ordering
The CA78K0R Compiler and CA78K0 Compiler are included in the C Compiler package for the RL78 and 78K Families (for CS+) and is not available separately.
When ordering, please contact your local Renesas Electronics marketing office or distributor.
Support
Support Communities
- RL78/F13 Sample code for e2studio GCC RL78
Hi, Is there any sample code available for RL78/F13 with e2studio and GCC RL78 compiler. The sample projects for the following are available? 1. ADC, WDT, GPIO PWM 2. CAN driver sample code 3. Flash programming library and sample code. Regards, Shijo Thomas
May 26, 2022 - IDE for RL78/L1C
Hi, I am beginner to Renesas MCU development, started to work on RL78/L1C microcontroller. Which IDE is suitable for it? Either e2 studio or CS+ ? Provide the information of the license details (like free or evaluation or any code size limitation). Thank you, Shalini P
Jul 30, 2025
Knowledge Base
- Is the RL78 C compiler license bought with CS+ valid for e² studio, too?
... toolchains is typically at this location:C:/Program Files/Renesas Electronics/CS+/CC/CC-RL/(version number) Note 1: The "C Compiler for RL78 and 78K Families" of CubeSuite+ is not applicable for e² studio. Note 2: This FAQ is subjected to be applied ...
May 7, 2024 - Can I use CA78K0R compiler for RL78 in e² studio
... CA78K0R projects into CC-RL project format and import them. However, the CA78K0R compiler for RL78 is not supported by e² studio.Therefore, you need the C compiler package (CC-RL) for the RL78 family to perform build operation in e² studio. Additionally, load modules output by the CA78K0R compiler ...
Jun 28, 2017 - Can I check C-language source code of the addresses?
... to indicate the start and end addresses in the following cases, so the method can be used even if there are multiple files.The symbol for the start address is defined in the start-up routine.The symbol for the end address is defined in rom.asm among the library ...
Nov 20, 2014
Support Communities
