Description
This Group is supported only for customers who have already adopted these products. The RL78/F12, F13, F14, F15 Groups are recommended for new designs.
The R8C/34E Group, R8C/34F Group, R8C/34G Group, and R8C/34H Group of single-chip MCUs incorporate the R8C/Tiny Series CPU core, employing sophisticated instructions for a high level of efficiency. With 1Mb of address space, and it is capable of executing instructions at high speed. In addition, the CPU core boasts a multiplier for high-speed operation processing.
Power consumption is low, and the supported operating modes allow additional power control. These MCUs are designed to maximize EMI/EMS performance. Integration of many peripheral functions, including multifunction timer and serial interface, reduces the number of system components. The R8C/34E Group and R8C/34F Group have a single channel CAN module and are suitable for LAN systems in vehicles and for FA. The R8C/34G Group and the R8C/34H Group do not have CAN modules. The R8C/34E Group and the R8C/34G Group have data flash (1KB × 4 blocks) with the background operation (BGO) function.
Applications
- Automotive
| Part Number | Status | Samples | Stock | Package |
|---|---|---|---|---|
| R5F21346FJFP | Obsolete | N/A | Out of Stock | Package |
| R5F21346FKFP | Obsolete | N/A | Out of Stock | Package |
| R5F21347FJFP | Obsolete | N/A | Out of Stock | Package |
| R5F21347FKFP | Obsolete | N/A | Out of Stock | Package |
| R5F21348FJFP | Obsolete | N/A | Out of Stock | Package |
| R5F21348FKFP | Obsolete | N/A | Out of Stock | Package |
| R5F2134AFJFP | Obsolete | N/A | Out of Stock | Package |
| R5F2134AFKFP | Obsolete | N/A | Out of Stock | Package |
| R5F2134CFJFP | Obsolete | N/A | Out of Stock | Package |
| R5F2134CFKFP | Obsolete | N/A | Out of Stock | Package |
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- Application NoteAI-generated Summary: The document explains how to register and uninstall Call Walker within the High-performance Embedded Workshop (HEW). It guides users to launch HEW without opening a workspace, access the Tools Administration menu, and register the Call Walker tool by specifying the registration file path. After registration, Call Walker version 2.3 appears in the menu. Upon uninstalling HEW, users must manually delete the remaining Call Walker directory. It also provides Renesas Electronics website and contact information for support. The revision history notes the first edition release date.
- Application NotePDF 424 KB R01AN1648EJ0101 Rev.1.01 Mar 31, 2013AI-generated Summary: CAN communication requires initial settings including clock, bit timing, baud rate, and acceptance filters. Bit timing divides each bit into three segments: Synchronization Segment (SS), Time Segment 1 (TSEG1), and Time Segment 2 (TSEG2). TSEG1 and TSEG2 determine the sampling point and compensate for network delays and phase errors. The timing unit is time quanta (Tq), influenced by clock frequency and baud rate prescaler. Segment settings have specific ranges and restrictions to ensure proper synchronization and communication.
- Application NoteAI-generated Summary: The document presents performance data of the signal processing library on SH2A-FPU and RX devices, detailing CPU cycles for various DSP functions such as FFT, FIR, and IIR filters across different sample sizes and coefficients. It also provides Renesas Electronics website and support contact information. The revision record notes the first edition release date as December 17, 2010.Related Files:
- Application NoteAI-generated Summary: The source code projects for the R8C/35C Renesas Starter Kit demonstrate peripheral initialization and include a main C source file with detailed comments explaining functionality, such as ADC single operation mode triggered by software. The document provides general precautions for handling MPU/MCU products, including handling unused pins, power-on processing, prohibition of reserved address access, clock signal stability requirements, and product differences. It also includes references to Renesas support websites.Related Files:
- Application NotePDF 126 KB R20AN0090ES0100 Rev.1.00 Mar 01, 2010AI-generated Summary: The system timer in MR8C/4 tracks elapsed time in an RTOS by generating periodic interrupts, incrementing a tick counter. The timer's resolution depends on application needs, hardware limitations, and counter storage. MR8C/4 uses a 6-byte counter allowing up to 8925 years of tick counting at 1ms resolution. Hardware timer inaccuracies require adjustments to ensure minimum delay durations. Users configure the system timer by selecting hardware timers, setting interrupt priorities, and defining interrupt vectors. The system timer manages time-based functions and is optional if no time management is used.View More (87)
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- IDE and Coding ToolAdd new CPU types to the compiler package (for High-performance Embedded Workshop V4 or later)
- IDE and Coding ToolRenesas integrated development environment (IDE) (for SuperH, RX, R8C, M32R, M16C, H8SX, H8S, H8, and 740 families).
- Compiler/AssemblerC/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.
- EmulatorA full-spec emulator available for full bus trace. This can be used for various devices by MCU units or connection parts exchange. [Compatible software(GUI): High-performance Embedded Workshop] [Target devices: RX610, R8C/5x, R8C/3x, M16C/64, RS-4 and others.]
- EmulatorOn-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.
- EmulatorMCU unit for the R8C/3x Series [for E100]. An MCU-dependent converter board is required.
- Programmer (Unit/SW)On-chip debugging emulator available as a flash memory programmer [Available flash programming software: Flash Development Toolkit] [Support MCU/MPU and devices: SuperH RISC engine, R8C, M16C, H8SX, H8S, H8, 740]
- Programmer (Unit/SW)Flash memory programming software. [Support MCU/MPU and devices: SuperH RISC engine, RX, R8C, M16C, H8SX, H8S, H8, 740]
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- IDE and Coding ToolAdd new CPU types to the compiler package (for High-performance Embedded Workshop V4 or later)
- IDE and Coding ToolRenesas integrated development environment (IDE) (for SuperH, RX, R8C, M32R, M16C, H8SX, H8S, H8, and 740 families).
- Compiler/AssemblerC/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.
- EmulatorA full-spec emulator available for full bus trace. This can be used for various devices by MCU units or connection parts exchange. [Compatible software(GUI): High-performance Embedded Workshop] [Target devices: RX610, R8C/5x, R8C/3x, M16C/64, RS-4 and others.]View More (20)
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Knowledge Base
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(R8C) Are there any hardware precautions for accurate A/D conversion?
In order to perform A/D conversion, it is necessary to fully charge the internal capacitor, but if the impedance of the A/D conversion target is high, the discharge and charge will take time and the conversion value will not be accurate. For correct A/D ...
Jun 19, 2006 -
Can a parallel programmer verify the program in condition the ROM code protect is enabled?
The ROM code protect is enabled at the first MCU reset after setting the ROM code protect function. If there is no reset after writing the program, the program can be verified. Contact the parallel programmer manufacturer for programmer specifications.
Dec 26, 2017 -
What will happen if the MCU starts operating before oscillation is stabilized?
Serial interfaces and timers may not be able to operate correctly. If the CPU clock is switched from "division by 8" to "no divisions" before oscillation is stabilized, the program will not perform properly because the CPU cannot fetch the program codes correctly. Timers, A/D converter and serial ...
Dec 26, 2017
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