R5F21112FP#U0 - 16-bit 20MHz 8KB Flash MCU | Renesas
部品番号: R5F21112FP#U0 ✗ 生産終了R5F21112FP#U0 概要
The MCU operates from a 3 V to 5 V supply, with the available product information identifying a 3/5 V device. The R5F21112FP family uses a high-performance silicon gate CMOS process and is packaged as a 32-pin plastic molded LQFP. Its 8 KB flash memory provides on-chip program storage for firmware, while the 16-bit CPU core supports efficient control-loop and peripheral-oriented software execution.
Key characteristics include a 20 MHz maximum operating frequency, 8 KB flash memory and a 32-LQFP (7 x 7 mm) package. The available distributor and manufacturer listings identify this part as an R8C/1x/11 microcontroller. The verified product information does not include detailed RAM size, peripheral inventory, ADC specifications, timer resources, I/O count or electrical timing values, so those details should be confirmed in the manufacturer datasheet before final design release.
R5F21112FP#U0 is suitable for compact embedded controllers, industrial equipment, appliance controls, instrumentation, serial-interface products and general-purpose embedded control boards. Its small LQFP package can support prototype and moderate-volume production layouts when the required peripheral and pin functions are available. Designers should verify the exact pin assignments, clock requirements, reset behavior and memory map against the official documentation before PCB routing or firmware development.
The most important engineering consideration is that the #U0 ordering suffix and 32-LQFP footprint do not, by themselves, establish complete drop-in compatibility with another MCU. Pin assignment, core architecture, memory size, peripheral resources, voltage tolerance and timing must all be compared. This page consolidates the verified distributor and Renesas product information while avoiding unsupported assumptions about missing technical parameters.
ドロップイン代替品: R5F21112FP#U0 — 同一パッケージでピン互換。PCBの作り直しが必要な異なるパッケージの部品は除外されています。
R5F21112DFP#U0
✅ ドロップイン📋 参考代替品（カタログ未掲載）
R5F21112FP#U0 最大定格＆電気的特性
| Product Type | 16-bit microcontroller |
| Series | R8C/1x/11 |
| CPU Core | R8C/Tiny Series |
| Maximum Operating Frequency | 20 MHz |
| Flash Memory | 8 KB (8K x 8) |
| 動作電源電圧 | 3/5 V |
| パッケージ | 32-LQFP (7 x 7 mm) |
| Package Type | Plastic molded LQFP |
| ピン数 | 32 pins |
| 実装タイプ | Surface mount |
| Silicon Process | High-performance silicon gate CMOS |
| Program Memory Type | Flash |
| Lead-Free Status | Pb-free |
| 動作温度範囲 | -20 °C to +85 °C |
R5F21112FP#U0 plastic molded lqfp ピン配置ガイド
R5F21112FP#U0 (plastic molded lqfp パッケージ) のピン配置。 このデジタルICには、GPIO、通信インターフェース (UART、SPI、I2C)、および電源ピンが含まれています。代替ピン機能と設定オプションについては、メーカーのデータシートを参照してください。組み込みシステム設計とPCBレイアウトに不可欠です。
詳細なピン配置データはありません: R5F21112FP#U0.
詳細は データシート をご参照ください。
主な用途
R5F21112FP#U0 の用途: 6 件s: Compact Industrial Control Board, Appliance and Equipment Controller, Serial Interface Product, Instrumentation and Measurement Module, Battery-Powered Portable Device, LED and Display Controller.
Compact Industrial Control Board
The R5F21112FP#U0 fits compact industrial control tasks that call for a 16-bit processor, 20 MHz operating speed and 8 KB of on-chip flash without a larger external-memory package. Its 32-LQFP 7 x 7 mm outline leaves usable board area around the controller for sensors, power conversion and communications. The -20 °C to +85 °C rating supports many factory and building-automation environments. Before committing to a layout, verify the complete GPIO map, peripheral inventory, watchdog behavior and timing limits in the Renesas datasheet because those details are not present in the supplied product snippets.
おすすめ
Appliance and Equipment Controller
R5F21112FP#U0 is appropriate for appliance controls, small equipment and user-interface controllers where a dedicated microcontroller must manage sequencing, discrete inputs and local outputs. Its 16-bit R8C/Tiny-series core executes control firmware efficiently at up to 20 MHz, while 8 KB flash provides on-board program storage for a compact product. The 32-LQFP package is manageable for multilayer PCB assembly, although pin density and thermal behavior should be checked against the assembly process. Confirm peripheral availability, UART or serial-interface requirements and exact supply limits before using the part as a final design choice.
おすすめ
Serial Interface Product
The R5F21112FP#U0 can serve as the control core in serial-interface products because it combines a 16-bit architecture, 20 MHz performance and 8 KB flash with a compact 32-LQFP footprint. It is potentially useful for configuration adapters, protocol bridges and service interfaces where deterministic embedded control is needed. The verified snippets do not identify UART, SPI, CAN or USB resources, so engineers must confirm that the required serial peripheral exists in the exact R5F21112FP device. Interface voltage levels, timing and pin multiplexing must also be validated before PCB release.
おすすめ
Instrumentation and Measurement Module
R5F21112FP#U0 is suitable for compact instrumentation modules that require local control, firmware storage and a low-voltage microcontroller without a high-pin-count package. Its 16-bit core can support measurement sequencing and control logic, while the 8 KB flash capacity may suit focused embedded applications. The verified data does not provide ADC resolution, comparator features, timer accuracy or memory-mapped peripheral details, so analog measurement suitability cannot be inferred. Engineers should check those resources and the 3/5 V operating class in the official datasheet before selecting the MCU.
おすすめ
Battery-Powered Portable Device
The R5F21112FP#U0 can serve as the embedded controller in a low-voltage portable product where a compact controller and modest flash requirement are primary concerns. The listed 3/5 V operating class allows use with regulated 5 V or compatible low-voltage rails, and the 20 MHz R8C core provides more than enough nominal processing capability for basic sequencing and local control. However, verified sleep currents, active current, analog functions and wake-up sources are unavailable. Power-budget decisions should therefore wait for datasheet verification, particularly for battery-life-critical products.
おすすめ
LED and Display Controller
R5F21112FP#U0 may be used in small LED-control or display-support modules where local timing, button handling and pattern generation are required. Its 16-bit core and 20 MHz clock rate provide ample nominal processing bandwidth for non-demanding control tasks, and the 8 KB flash allows compact embedded firmware storage. The verified material does not list PWM channels, display interfaces, comparators or timer resources, so LED dimming and display timing cannot be assumed. Confirm those functions, along with pin assignment and operating temperature requirements, in the manufacturer documentation.
おすすめ
おすすめ製品の概要
エンジニアリング参考データ: R5F21112FP#U0 — 比較、設計ガイダンス、コンプライアンス情報。
選定ガイド
代替品との比較
| パラメータ | この製品 | R5F21112DFP#U0 |
|---|---|---|
| Package | 32-LQFP (7 x 7 mm) | 32-LQFP (7 x 7 mm) |
| Brand | Renesas Electronics | Renesas Electronics |
| Product Type | 16-bit microcontroller | 16-bit microcontroller |
| Series | R8C/1x/11 | R8C/11 |
| CPU Core | R8C/Tiny Series | R8C |
| Flash Memory | 8 KB (8K x 8) | 8 KB |
| Operating Voltage | 3/5 V | 2.7 V to 5.5 V |
主な差別化要因
- Exact target ordering suffix （vs R5F21112DFP#U0)
- Manufacturer-defined product configuration （vs R5F21112DFP#U0)
- Documented temperature coverage in the verified results （vs R5F21112DFP#U0)
設計ノート
Do not treat a matching 32-LQFP outline or the R5F21112 family name as proof of a drop-in replacement. Before substituting R5F21112DFP#U0, compare the Renesas ordering information, package drawing, numbered pins, power pins, peripheral multiplexing, supply limits, flash and RAM organization, clock circuit and watchdog behavior. The verified comparison result confirms family-level similarities but does not provide the evidence needed to guarantee firmware and PCB interchangeability.
Route the 32-LQFP device with an assembly-compatible land pattern and verify pin 1 orientation against the current package drawing. Keep the 3/5 V supply path short, provide local bypass capacitance as directed by the manufacturer datasheet and isolate noisy switching or motor-drive return currents from sensitive control signals. Because exact pin names and decoupling values are absent from the supplied data, use the official schematic and layout guidance rather than values inferred from generic MCU practice.
The listed 3/5 V operating class should be checked against the exact device limits before selecting a regulator. The cross-reference result describes R5F21112DFP#U0 as operating from 2.7 V to 5.5 V, but that range must not be transferred to the FP suffix without manufacturer confirmation. Review absolute maximum and recommended operating conditions, then size the supply for the MCU, external loads and any required startup margin.
コンプライアンス情報
The verified Mouser listing identifies R5F21112FP#U0 as Pb-free. No verified RoHS, REACH, AEC-Q100, halogen-free or conflict-minerals statement was supplied.