Overview

The R8C/21 Group is supported only for customers who have already adopted these products.

This MCU is built using the high-performance silicon gate CMOS process using the R8C CPU core and is packaged in a 48-pin plastic molded LQFP. This MCU operates using sophisticated instructions featuring a high level of instruction efficiency. With 1Mb of address space, it is capable of executing instructions at high speed. This Furthermore, the data flash (1KB x 2 blocks) is embedded in the R8C/21 Group. The difference between R8C/20 and R8C/21 Groups is only the existence of the data flash. Their peripheral functions are the same.

Applications

  • Automotive

Documentation

Design & Development

Software & Tools
M3T-MR30/4 Real-time OS for M16C Series and R8C Family
μITRON4.0 Specification real-time OS for M32C/80, M16C/80 Series [Required IDE :High-performance Embedded Workshop]
Downloads
Real-time OS RI600/4 for RX600 Series Application Note: Application Transition Guide (from M3T-MR30/4 to RI600/4)High-performance Embedded Workshop Application Note: Real-time OS aware debugging Rev.1.00
 ITRON OS Renesas
Data Flash Driver
Block type Device Drivers for data flash embedded microcontrollers
On-chip Flash Memory Renesas
C/C++ Compiler Package for R8C and M16C Families
C/C++ Compiler Package for R8C Family and M16C Family (R32C/M32C/M16C) , * Packed the following three compiler packages : [Content] C Compiler Package for R32C Series, C Compiler Package for M32C Series [M3T-NC308WA], and C/C++ Compiler Package for M16C Series and R8C Family [M3T-NC30WA]. They are bundled with the simulator debugger and High-performance Embedded Workshop.
Downloads
RX Development Environment Migration Guide Migration from M16C Family to RX Family (Compiler ed.) (High-performance Embedded Workshop and NC30WA to CS+ and CC-RX)Compiler Package Application Note: The application guide of Call Walker Rev.1.00[Evaluation Software] C/C++ Compiler Package for M16C Series and R8C Family M3T-NC30WA V.6.00 Release 00[Evaluation Software] C Compiler Package for M16C Series and R8C Family M3T-NC30WA V.5.45 Release 01RX Compiler Application Notes: 4-Sample Project RX Migration Guide: M16C Edition
M3T-NC308WA, M3T-NC30WA Application Notes (C Compilers for M16C Family)
 Compiler/Assembler Renesas
MISRA C Rule Checker SQMlint
MISRA C Rule Checker (option)
Compiler/Assembler Renesas
E8a
On-Chip Debugging Emulator for R8C, M16C, H8S, H8 and 740 families. E8a is also used as a device programmer for Renesas microcomputers. This product is E8 emulator's successor.
Downloads
[Evaluation Software] Flash Development Toolkit V.4.09 Release 03[Evaluation Software] C/C++ Compiler Package for M16C Series and R8C Family M3T-NC30WA V.6.00 Release 00[Evaluation Software] C Compiler Package for M16C Series and R8C Family M3T-NC30WA V.5.45 Release 01E8a self-check program V.1.00.02
 Emulator Renesas
High-performance Embedded Workshop
Renesas integrated development environment (IDE) (for SuperH, RX, R8C, M32R, M16C, H8SX, H8S, H8, and 740 families).
Downloads
High-performance Embedded Workshop Application Note: Real-time OS aware debugging Rev.1.00Install Manager Utility V.1.03.01 UpgradeAutoUpdate Utility V.1.05.00 UpgradeR8C/20, R8C/21 Group Register DefinitionHigh-performance Embedded Workshop Tcl/Tk Application Note Rev.1.00
 IDE and Coding Tool Renesas
Flash Development Toolkit (Programming GUI)
Flash memory programming software. [Support MCU/MPU and devices: SuperH RISC engine, RX, R8C, M16C, H8SX, H8S, H8, 740]
Downloads
[Evaluation Software] Flash Development Toolkit V.4.09 Release 03
 Programmer (Unit/SW) Renesas
Simulator Debugger for M16C Series and R8C Family
Simulator Debugger for M16C/60, M16C/30, M16C/Tiny, M16C/20, M16C/10 Series and R8C Family [Support IDE : High-performance Embedded Workshop] (Note: This product is included in Compiler Package and is not available separately.)
Downloads
[Evaluation Software] C/C++ Compiler Package for M16C Series and R8C Family M3T-NC30WA V.6.00 Release 00[Evaluation Software] C Compiler Package for M16C Series and R8C Family M3T-NC30WA V.5.45 Release 01
 Simulator Renesas
SPI Serial EEPROM Driver
Device Drivers for SPI Bus Serial EEPROM R1EX25xxx Series and HN58X25xxx Series
Downloads
Serial EEPROM HN58X25xxx Series Sample Program M16C（UART）Serial EEPROM of HN58X25xxx Series Control Using Clock Synchronous Serial I/O (UART) of M16C
 Serial Memory Renesas
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Software Downloads

ECAD Models

Schematic symbols, PCB footprints, and 3D CAD models from SamacSys can be found by clicking on products in the Product Options table. If a symbol or model isn't available, it can be requested directly from the website.

Explore ECAD Models
Diagram of ECAD Models

Product Options

    Processing table
    Flash Memory (KB)
    RAM (KB)
    Lead Count (#)
    Temp. Range
    PLP
    Price (USD) | 1ku
    Buy / Sample
    Part Number
    R5F2121CJFP#U0
    circleObsolete
    memory
    view_in_ar
    		6 48 -40 to 85°C N/A 7.267
    R5F2121CJFP#W4
    circleObsolete
    memory
    view_in_ar
    		6 48 -40 to 85°C N/A
    R5F21216JFP#U1
    circleNRND
    memory
    view_in_ar
    		2 48 -40 to 85°C N/A 6.052
    R5F21216JFP#W4
    circleObsolete
    memory
    view_in_ar
    		2 48 -40 to 85°C N/A
    R5F21216KFP#U1
    circleNRND
    memory
    view_in_ar
    		2 48 -40 to 125°C N/A 6.597
    R5F21216KFP#W4
    circleObsolete
    memory
    view_in_ar
    		2 48 -40 to 125°C N/A
    R5F2121CKFP#U0
    circleObsolete
    memory
    view_in_ar
    		6 48 -40 to 125°C N/A 10.06
    R5F21217KFP#U1
    circleObsolete
    memory
    view_in_ar
    		2.5 48 -40 to 125°C N/A
    R5F21217KFP#W4
    circleObsolete
    memory
    view_in_ar
    		2.5 48 -40 to 125°C N/A
    R5F2121AJFP#U0
    circleNRND
    memory
    view_in_ar
    		5 48 -40 to 85°C N/A 6.849
    R5F2121AJFP#W4
    circleObsolete
    memory
    view_in_ar
    		5 48 -40 to 85°C N/A
    R5F21218KFP#U1
    circleObsolete
    memory
    view_in_ar
    		3 48 -40 to 125°C N/A 9.01
    R5F21218KFP#W4
    circleObsolete
    memory
    view_in_ar
    		3 48 -40 to 125°C N/A
    R5F21218JFP#U1
    circleNRND
    memory
    view_in_ar
    		3 48 -40 to 85°C N/A 6.5
    R5F21218JFP#W4
    circleObsolete
    memory
    view_in_ar
    		3 48 -40 to 85°C N/A
    R5F2121AKFP#U0
    circleObsolete
    memory
    view_in_ar
    		5 48 -40 to 125°C N/A
    R5F21217JFP#U1
    circleNRND
    memory
    view_in_ar
    		2.5 48 -40 to 85°C N/A 6.276
    R5F21217JFP#W4
    circleNRND
    memory
    view_in_ar
    		2.5 48 -40 to 85°C N/A
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    • Cart icon to the right of the chip icon: Indicates that samples are available for this product