描述
The R8C/25 Group is supported only for customers who have already adopted these products. The RL78/G14 Group is recommended for new designs.
These MCUs are fabricated using a high-performance silicon gate CMOS process, embedding the R8C/Tiny Series CPU core, and are packaged in a 52-pin molded-plastic LQFP or a 64-pin molded-plastic FLGA. It implements sophisticated instructions for a high level of instruction efficiency. With 1Mb of address space, they are capable of executing instructions at high speed. Furthermore, the R8C/25 Group has on-chip data flash (1KB x 2 blocks). The difference between the R8C/24 Group and R8C/25 Group is only the presence or absence of data flash. Their peripheral functions are the same.
应用
- Electronic Household Appliances
- Office Equipment
- Audio Equipment
- Consumer Products
| 器件号 | 状态 | 样品 | 库存 | RoHS | 封装 | 预算价格（美元） | RAM (KB) | Lead Count (#) | Temp. Range (°C) | Country of Assembly | Country of Wafer Fabrication |
|---|---|---|---|---|---|---|---|---|---|---|---|
| R5F21254SDFP#V2 | NRND | N/A | 缺货 | 联系我们 | LQFP | 1ku | $5.18 | 1KB | 52# | -40 to +85 | CHINA | JAPAN |
| R5F21254SDFP#X6 | Obsolete | N/A | 缺货 | 联系我们 | LQFP | 1KB | 52# | -40 to +85 | |||
| R5F21254SNFP#V2 | NRND | N/A | 缺货 | 联系我们 | LQFP | 1ku | $4.94 | 1KB | 52# | -20 to +85 | CHINA | JAPAN |
| R5F21254SNFP#X6 | Obsolete | N/A | 缺货 | 联系我们 | LQFP | 1KB | 52# | -20 to +85 | |||
| R5F21254SNLG#U0 | Obsolete | N/A | 缺货 | RoHS:EN RoHS:JA | TFLGA | 1KB | 64# | -20 to +85 | |||
| R5F21255SDFP#V2 | Obsolete | N/A | 缺货 | 联系我们 | LQFP | 2KB | 52# | -40 to +85 | |||
| R5F21255SDFP#X6 | NRND | N/A | 缺货 | 联系我们 | LQFP | 2KB | 52# | -40 to +85 | |||
| R5F21255SNFP#V2 | NRND | N/A | 缺货 | 联系我们 | LQFP | 1ku | $4.98 | 2KB | 52# | -20 to +85 | CHINA | JAPAN |
| R5F21255SNFP#X6 | NRND | N/A | 缺货 | 联系我们 | LQFP | 2KB | 52# | -20 to +85 | |||
| R5F21256SDFP#V2 | NRND | N/A | 缺货 | 联系我们 | LQFP | 1ku | $5.53 | 2KB | 52# | -40 to +85 | CHINA | JAPAN |
| R5F21256SDFP#X6 | NRND | N/A | 缺货 | 联系我们 | LQFP | 2KB | 52# | -40 to +85 | |||
| R5F21256SNFP#V2 | NRND | N/A | 有库存 | 联系我们 | LQFP | 1ku | $6.05 | 2KB | 52# | -20 to +85 | CHINA | JAPAN |
| R5F21256SNFP#X6 | NRND | N/A | 缺货 | 联系我们 | LQFP | 1ku | $5.22 | 2KB | 52# | -20 to +85 | CHINA | JAPAN |
| R5F21256SNLG#U0 | Obsolete | N/A | 有库存 | RoHS:EN RoHS:JA | TFLGA | 2KB | 64# | -20 to +85 | |||
| R5F21257SDFP#V2 | NRND | N/A | 缺货 | 联系我们 | LQFP | 1ku | $4.53 | 2.5KB | 52# | -40 to +85 | CHINA | JAPAN |
| R5F21257SDFP#X6 | NRND | N/A | 有库存 | 联系我们 | LQFP | 1ku | $4.59 | 2.5KB | 52# | -40 to +85 | CHINA | JAPAN |
| R5F21257SNFP#V2 | NRND | N/A | 有库存 | 联系我们 | LQFP | 1ku | $5.29 | 2.5KB | 52# | -20 to +85 | CHINA | JAPAN |
| R5F21257SNFP#X6 | NRND | N/A | 缺货 | 联系我们 | LQFP | 1ku | $5.36 | 2.5KB | 52# | -20 to +85 | CHINA | JAPAN |
| R5F21258SDFP#V2 | NRND | N/A | 缺货 | 联系我们 | LQFP | 1ku | $7.19 | 3KB | 52# | -40 to +85 | CHINA | JAPAN |
| R5F21258SDFP#X6 | NRND | N/A | 缺货 | 联系我们 | LQFP | 3KB | 52# | -40 to +85 | |||
| R5F21258SNFP#V2 | NRND | N/A | 有库存 | 联系我们 | LQFP | 1ku | $6.85 | 3KB | 52# | -20 to +85 | CHINA | JAPAN |
| R5F21258SNFP#X6 | NRND | N/A | 缺货 | 联系我们 | LQFP | 1ku | $5.64 | 3KB | 52# | -20 to +85 | CHINA | JAPAN |
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- 工具新闻 - 注意事项英语
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- 应用说明英语AI 生成的摘要: The document explains how to migrate timer functions from the R8C/36M Group's Timer RB to the RL78/G14's Timer Array Unit (TAU). It details the correspondence between operation modes: timer mode, programmable waveform generation, programmable one-shot generation, and programmable wait one-shot generation. The RL78/G14 uses four 16-bit timers, which can be combined for higher accuracy. Interval timer, PWM output, and one-shot pulse output functions in TAU replicate the R8C/36M Timer RB modes with enhanced flexibility.相关文件：
- 应用说明英语AI 生成的摘要: The document explains how to implement single master control communication using the R8C/35C Group EC bus interface to issue a restart condition. It demonstrates sending and receiving data with a digital color sensor (S11059-02DT) by alternating master transmission and reception. The restart condition allows switching data direction without issuing a stop condition, complying with I²C protocol standards such as 7-bit slave addressing, approximately 357 kHz transfer rate, and single master communication.相关文件：
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- 应用说明英语AI 生成的摘要: 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.
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- 应用说明英语AI 生成的摘要: The document explains how to migrate timer functions from the R8C/36M Group's Timer RB to the RL78/G14's Timer Array Unit (TAU). It details the correspondence between operation modes: timer mode, programmable waveform generation, programmable one-shot generation, and programmable wait one-shot generation. The RL78/G14 uses four 16-bit timers, which can be combined for higher accuracy. Interval timer, PWM output, and one-shot pulse output functions in TAU replicate the R8C/36M Timer RB modes with enhanced flexibility.相关文件：
- 应用说明英语AI 生成的摘要: The document explains how to implement single master control communication using the R8C/35C Group EC bus interface to issue a restart condition. It demonstrates sending and receiving data with a digital color sensor (S11059-02DT) by alternating master transmission and reception. The restart condition allows switching data direction without issuing a stop condition, complying with I²C protocol standards such as 7-bit slave addressing, approximately 357 kHz transfer rate, and single master communication.相关文件：
- 应用说明英语AI 生成的摘要: 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.
- 应用说明英语AI 生成的摘要: The document specifies the serial communication protocols for the R8C/1x and 2x Series microcontrollers in standard serial I/O modes 2 and 3. It details boot program operations including initial settings, communication with a serial programmer, and control commands for flash memory. Communication formats are asynchronous, with defined data transfer structures. Pin assignments and connection examples for both modes are provided. Initial settings cover selecting communication mode based on the MODE pin level after reset and adjusting the bit rate to 9600 bps through a defined handshake process with the serial programmer.
- 应用说明英语AI 生成的摘要: The R8C/25 Group Timer RA operates in Timer Mode by counting an internally generated source with decrement operation. It reloads the count from a register upon underflow and supports programmable divide ratios. The timer starts and stops via specific bits in the TRACR register, and generates interrupts on underflow. Key registers include TRACR, TRAIOC, TRAMR, TRAPRE, and TRA, which control timer operation, I/O functions, mode selection, prescaler, and count values. Writing to these registers affects timer behavior depending on whether counting is active or stopped.相关文件：查看更多 (172)
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- IDE 和编码工具英语Renesas integrated development environment (IDE) (for SuperH, RX, R8C, M32R, M16C, H8SX, H8S, H8, and 740 families).
- 编译器/汇编器英语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.
- 仿真器英语On-Chip Debugging Emulator for M16C and H8 families. Available as a flash memory programmer for M16C and 740(QzROM) families also by using with Flash Development Toolkit. Note that the H8 family MCUs support the debugging features and that the 740 family MCUs support only the programming features. * Successor : E8a
- 仿真器英语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.
- 仿真器英语Emulator for M16C Family [Overseas Standards Compliant]. Support for all operating frequencies of M16C.
- 编程器（单元/软件）英语On-chip debugging emulator available as a flash memory programmer [Available flash programming software: Flash Development Toolkit]
- 编程器（单元/软件）英语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]
- 编程器（单元/软件）英语Flash memory programming software. [Support MCU/MPU and devices: SuperH RISC engine, RX, R8C, M16C, H8SX, H8S, H8, 740]
- 编程器（单元/软件）英语Connected with a Flash Programmer, these IC Socket Boards enable reprogramming of the on-chip Memory before mounting.
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- IDE 和编码工具英语Renesas integrated development environment (IDE) (for SuperH, RX, R8C, M32R, M16C, H8SX, H8S, H8, and 740 families).
- 编译器/汇编器英语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.
- 仿真器英语On-Chip Debugging Emulator for M16C and H8 families. Available as a flash memory programmer for M16C and 740(QzROM) families also by using with Flash Development Toolkit. Note that the H8 family MCUs support the debugging features and that the 740 family MCUs support only the programming features. * Successor : E8a
- 仿真器英语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.查看更多 (42)
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知识库
-
(A/D 转换器) 为了正确地执行A/D转换，在硬件上有什么注意事项？
... 请参考硬件手册）。此外，为抑制A/D转换时发生的输入电流的影响，请在模拟输入引脚增加电容。 以R8C/25为例 Example (R8C/25)
-
(闪存) RS-232C电缆是否可用作M16C闪存启动工具 (M3A-0806)？
可以。
2004年12月7日 -
用M16C闪存Starter对内部闪存编程。对空白片ID码栏不输入任何值时有ID类型不匹配错而无法写入。怎么办？
M16C Flash Starter必须输入ID码。输入ID码后方可对空白片编程。对空白片而言，ID码可输入任意值。
2006年2月14日
