R5F21114FP#U0 - 16-Bit 20MHz MCU | Renesas Electronics
料号： R5F21114FP#U0 ✓ 量产中R5F21114FP#U0 概述
A microcontroller is a programmable semiconductor that integrates a CPU core, program memory, data memory, peripherals and I/O into one package. The R8C/Tiny family belongs to the broader hierarchy of embedded processors, microcontrollers, semiconductor devices and electronic control components. Renesas describes the R5F21114FP#U0 as a non-promotion member of its 16-bit microcontroller range, and its order page lists the device for procurement.
The R5F21114FP#U0 provides 16 KB of flash memory, a 20 MHz maximum clock and 3 V to 5 V supply operation in a 32-LQFP package. Compared with a general-purpose desktop processor, this device is optimized for compact embedded control, where deterministic peripheral access, compact implementation and low board-area requirements matter more than graphics performance or large memory capacity. The 7 x 7 mm LQFP also remains inspectable after soldering and is suitable for conventional PCB assembly processes.
The MCU is manufactured using a high-performance silicon-gate CMOS process, as described by the Renesas datasheet information. This implementation supports the R8C/Tiny CPU core and a broad set of embedded-control resources. Exact RAM capacity, peripheral inventory, clock-generation options and electrical limits are not included in the verified excerpts supplied for this page, so those values require confirmation in the complete manufacturer datasheet before final design sign-off.
Typical uses include industrial controllers, consumer products, measurement equipment and compact embedded control modules. The 16 KB flash capacity is appropriate for moderate firmware sizes, while the 3 V to 5 V operating range supports common industrial and commercial supply voltages. Designers should confirm peripheral timing, memory availability and pin-level requirements when migrating a board from another Renesas MCU.
For PCB implementation, follow the complete Renesas package drawing and pin-assignment documentation. Place bypass capacitors near the supply pins, route sensitive signals away from switching nodes and verify programming, reset and clock connectivity against the manufacturer reference design. Because the supplied excerpts do not provide a complete verified pin table, no pin assignments should be inferred from the package drawing alone.
This product record consolidates verified distributor specifications, current pricing information, same-family alternatives and practical sourcing guidance. It is intended to support initial design and procurement decisions while clearly separating confirmed data from parameters that still require review in the full Renesas datasheet.
直接替换替代料： R5F21114FP#U0 ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
R5F21104DFP#U0
✅ 直接替换📋 参考替代料（不在目录中）
R5F21334TNFP#50
✅ 直接替换📋 参考替代料（不在目录中）
R5F2136ACDFP#50
✅ 直接替换📋 参考替代料（不在目录中）
R5F21105DFP#U0
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
R5F21106DFP#U0
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
R5F21114FP#U0 最大额定值与电气特性
| Product Type | 16-bit Microcontroller |
| CPU Series | R8C/Tiny |
| CPU Core | R8C |
| CPU Architecture | 16-bit CISC |
| Maximum CPU Frequency | 20 MHz |
| Flash Memory | 16 KB (16K x 8) |
| Operating Voltage Range | 3 V to 5 V |
| 封装 | 32-LQFP (7 x 7 mm) |
| 引脚数量 | 32 pins |
| 安装类型 | Surface Mount |
| Process Technology | High-performance silicon-gate CMOS |
| Product Category | Non Promotion |
| Lead-Free Status | Pb-Free |
R5F21114FP#U0 32-lqfp (7 x 7 mm) 引脚配置指南
R5F21114FP#U0（32-lqfp (7 x 7 mm) 封装）的引脚配置。 该数字 IC 包含 GPIO、通信接口（UART、SPI、I2C）和电源引脚。请参阅制造商数据手册以了解复用引脚功能和配置选项。对嵌入式系统设计和 PCB 布局至关重要。
暂无详细引脚数据： R5F21114FP#U0.
请参阅 数据手册 以查看完整引脚配置。
典型应用
R5F21114FP#U0 适用于 6 应用s: Industrial Embedded Control, Consumer Product Interface, Measurement and Instrumentation, Battery-Powered Monitoring, Communication Equipment Control, Appliance and User Interface Controller.
Industrial Embedded Control
The R5F21114FP#U0 fits compact industrial controllers because its 16-bit R8C core, 20 MHz operating frequency and 16 KB flash provide sufficient processing and firmware capacity for routine sequencing, condition monitoring and actuator control. The 32-LQFP 7 x 7 mm package reduces board area without introducing a leadless thermal-pad assembly process. In an industrial controller, the MCU can manage digital inputs, sensor acquisition and discrete outputs on a 3.3 V or 5 V rail. The main design constraint is firmware density: 16 KB flash should be allocated carefully, and the complete datasheet should be checked for exact RAM, peripheral count and electrical limits.
推荐
Consumer Product Interface
The R5F21114FP#U0 is suitable for consumer products that need a dedicated low-power control engine rather than a high-performance application processor. Its 20 MHz R8C core can handle button handling, status LEDs, simple timing and communication tasks, while 16 KB of flash supports compact embedded firmware. Operation from 3 V to 5 V allows the same MCU family to address common 3.3 V and 5 V product rails. The 7 x 7 mm LQFP is also easy to inspect and service in conventional consumer-electronics manufacturing. Before assigning a peripheral such as USB, CAN or a high-speed serial interface, engineers must verify that the exact R5F21114FP#U0 variant includes the required interface and pin assignment.
推荐
Measurement and Instrumentation
The R5F21114FP#U0 can serve as the supervisory controller in a compact measurement instrument where it configures sensors, records readings and coordinates a local display or communications port. Its 16-bit CPU architecture provides more headroom for signed arithmetic and control calculations than an 8-bit controller, while the 20 MHz clock supports responsive peripheral servicing. The MCU's 3 V to 5 V operating range is useful for mixed-signal instruments, although analog interfaces will still require suitable external signal conditioning. The verified material does not specify the complete ADC inventory, RAM capacity or timer resources, so those functions must be confirmed in the full Renesas datasheet before selecting it for a precision-measurement architecture.
推荐
Battery-Powered Monitoring
The R5F21114FP#U0 is applicable to small battery-powered monitoring modules because it combines a 16-bit CPU with 16 KB flash in a compact LQFP package and supports a 3 V operating point within its 3 V to 5 V range. A monitor can use the MCU to sample sensors, debounce inputs and report status over a low-duty-cycle communications link. Its 20 MHz clock provides processing headroom without requiring the highest possible operating mode for every task. Actual battery-life performance depends on the selected sleep modes, peripheral clocking and load current, none of which are quantified in the supplied excerpts. Review the electrical characteristics and low-power behavior in the complete manufacturer documentation before setting a power budget.
推荐
Communication Equipment Control
The R5F21114FP#U0 can be used as the supervisory controller in communication equipment where it handles configuration, fault flags and low-level protocol coordination. Its 20 MHz R8C core is appropriate for moderate real-time tasks, and the 16 KB flash capacity can hold configuration logic or a compact protocol stack. The 3 V to 5 V supply range supports both legacy 5 V circuitry and lower-voltage mixed designs. For a communications module, designers should verify the target's supported UART, SPI, I2C or other interface pins, because the verified snippets do not provide a complete peripheral list. A package-compatible replacement should never be selected solely by the 32-LQFP outline; electrical direction, alternate-function multiplexing and interrupt topology must match.
推荐
Appliance and User Interface Controller
The R5F21114FP#U0 is well matched to appliance controls that coordinate user inputs, display states and discrete actuators. Its 16-bit R8C architecture and 20 MHz clock support multitasking between a human interface, timing functions and status monitoring, while 16 KB flash provides a practical budget for a focused embedded application. The compact 7 x 7 mm LQFP permits placement near the main controller or user-interface connector. Because verified excerpts do not identify the exact GPIO count, RAM size or display-controller resources, engineers should create a firmware and peripheral allocation before committing the MCU. If a board is being revised, pin compatibility must be proven against the complete package drawing and pin multiplexing table.
推荐
推荐产品汇总
工程参考数据： R5F21114FP#U0 ——对比、设计指导和合规信息。
选型指南
与替代料对比
| 参数 | 本产品 | R5F21104DFP#U0 | R5F21334TNFP#50 | R5F2136ACDFP#50 | R5F21105DFP#U0 | R5F21106DFP#U0 |
|---|---|---|---|---|---|---|
| Brand | Renesas Electronics | Renesas Electronics | Renesas Electronics | Renesas Electronics | Renesas Electronics | Renesas Electronics |
| Package | 32-LQFP (7 x 7 mm) | 32-LQFP - same package class | 32-LQFP - same package | 32-LQFP - same package class | 32-LQFP - same package class | 32-LQFP - same package class |
关键差异点
- Confirmed 20 MHz operating frequency （对比 R5F21104DFP#U0)
- Verified 16 KB flash organization （对比 R5F21334TNFP#50)
- Explicit 3 V to 5 V operating range （对比 R5F2136ACDFP#50)
- Manufacturer ordering page and distributor availability （对比 R5F21105DFP#U0)
设计说明
Design the supply rails around the confirmed 3 V to 5 V operating range, but do not assume that every I/O pin tolerates 5 V when the MCU operates from 3.3 V. Place the required bypass capacitors close to the supply and ground pins, keep their ground returns short, and verify capacitor values and ESR requirements against the complete Renesas datasheet. Include the maximum operating frequency and peripheral current limits in the power-budget calculation before enabling all functions.
Use the manufacturer's 32-LQFP land pattern and pin numbering directly rather than generating it from package dimensions alone. The verified evidence establishes a 7 x 7 mm LQFP with 32 pins but does not provide the complete pin table, so confirm pin-1 orientation, exposed-pad status, solder-mask clearance and paste-land dimensions from the official package drawing. A small copper area and normal signal routing are appropriate only after those mechanical details are verified.
Do not treat a 32-LQFP outline as proof that a candidate MCU is a drop-in replacement. Compare all 32 electrical pins, alternate functions, power-domain requirements, reset behavior, clock pins and peripheral functions. A valid substitution also needs compatible firmware startup code, linker memory assumptions and interrupt mappings. R5F21104DFP#U0, R5F21334TNFP#50 and R5F2136ACDFP#50 are comparison candidates, but the supplied excerpts do not establish complete equivalence.
Separate analog, sensor and communication traces from fast digital or switching signals, and route clocks and reset inputs away from noisy nodes. Use a continuous ground plane where practical and place decoupling close to the device rather than at the board edge. If the MCU controls relays, motors or lamps, route their switching current away from the MCU and include appropriate protection. Exact high-current paths and grounding topology should follow the complete application circuit and board-layout guidance in the datasheet.
合规信息
Mouser identifies the R5F21114FP#U0 as Pb-Free. RoHS, REACH, AEC-Q100, halogen-free and conflict-minerals information were not explicitly provided in the verified excerpts.