R5F21112FP#U0 - 16-bit 20MHz 8KB Flash MCU | Renesas
N.º de pieza: R5F21112FP#U0 ✗ Fin de vidaR5F21112FP#U0 Descripción general
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.
Alternativas directas para R5F21112FP#U0 — mismo encapsulado, compatible pin a pin. Se excluyen las piezas de otro encapsulado que requieren retrabajo de la PCB.
R5F21112DFP#U0
✅ Sustitución directa📋 Alternativa de referencia (no en el catálogo)
R5F21112FP#U0 Valores máximos y características eléctricas
| 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) |
| Tensión de alimentación de funcionamiento | 3/5 V |
| Encapsulado | 32-LQFP (7 x 7 mm) |
| Package Type | Plastic molded LQFP |
| Recuento de pines | 32 pins |
| Tipo de montaje | Surface mount |
| Silicon Process | High-performance silicon gate CMOS |
| Program Memory Type | Flash |
| Lead-Free Status | Pb-free |
| Rango de temperatura de funcionamiento | -20 °C to +85 °C |
Guía de configuración de pines de R5F21112FP#U0 plastic molded lqfp
Configuración de pines para R5F21112FP#U0 (encapsulado plastic molded lqfp). Este CI digital incluye GPIO, interfaces de comunicación (UART, SPI, I2C) y pines de alimentación. Consulte la hoja de datos del fabricante para conocer las funciones alternativas de los pines y las opciones de configuración. Esencial para el diseño de sistemas embebidos y el diseño de PCB.
No hay datos detallados de patillaje disponibles para R5F21112FP#U0.
Consulte la hoja de datos para ver la configuración completa de patillas.
Aplicaciones típicas
R5F21112FP#U0 es adecuado para 6 aplicacións: 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.
Recomendado
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.
Recomendado
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.
Recomendado
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.
Recomendado
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.
Recomendado
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.
Recomendado
Resumen de productos recomendados
Datos de referencia de ingeniería para R5F21112FP#U0 — comparación, orientación de diseño e información de cumplimiento.
Guía de selección
Comparación con alternativas
| Parámetro | Este producto | 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 |
Diferenciadores clave
- Exact target ordering suffix (frente a R5F21112DFP#U0)
- Manufacturer-defined product configuration (frente a R5F21112DFP#U0)
- Documented temperature coverage in the verified results (frente a R5F21112DFP#U0)
Notas de diseño
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.
Información de cumplimiento
The verified Mouser listing identifies R5F21112FP#U0 as Pb-free. No verified RoHS, REACH, AEC-Q100, halogen-free or conflict-minerals statement was supplied.