R5F21114FP#W4 - 16-Bit R8C Microcontroller | Renesas
N.º da peça: R5F21114FP#W4 ✗ Fim de vidaR5F21114FP#W4 Visão geral
A microcontroller is a programmable semiconductor that combines a processor core, program memory, data memory, I/O ports, and peripherals on one integrated circuit. Within the embedded-system hierarchy, the R8C/Tiny family belongs to the 16-bit microcontroller class and provides a compact platform for appliance controls, industrial equipment, instrumentation, and embedded products. Its instruction-efficient R8C core is designed for compact systems that require more processing capability than a basic 8-bit controller.
The R5F21114FP#W4 combines 16 KB of Flash memory with 1 KB of internal RAM. Flash memory retains programmed firmware when power is removed, while RAM provides volatile working space for stack operations, variables, and intermediate calculations. A 20 MHz operating frequency supports time-sensitive control tasks, and the 22 available I/O pins allow the device to connect directly to switches, sensors, displays, actuators, and interface circuits.
The device uses Renesas silicon-gate CMOS technology and an instruction-efficient R8C/Tiny CPU core. Its 32-pin plastic-molded LQFP package is suitable for automated board assembly and provides a conventional 7 x 7 mm footprint. The W4 ordering designation identifies the tape-and-reel configuration, supporting repeatable pick-and-place and manufacturing operations. Pin assignment, signal levels, clock requirements, and peripheral functions should be confirmed against the R8C/11 Group Datasheet before layout release.
Typical uses include small appliance controllers, sensor-interfaces, industrial modules, instrument panels, and compact embedded control systems. The device is useful when a design needs a deterministic 16-bit control platform without a large external memory subsystem. Its 16 KB firmware space can hold a compact control routine, startup logic, state machine, and communication handler, although final firmware sizing must be checked after compilation.
Layout planning should preserve access to all programming and debug functions and follow the manufacturer’s recommended decoupling and clock arrangements. Confirm the exact pin roles, operating-voltage range, reset behavior, peripheral mix, and programming interface against the applicable Renesas documentation before schematic capture or PCB release.
This page organizes the R5F21114FP#W4 core specifications, manufacturing attributes, application context, and design considerations. It also distinguishes verified device characteristics from engineering information that must still be checked in the R8C/11 Group Datasheet and final design documentation.
Alternativas drop-in para R5F21114FP#W4 — mesmo encapsulamento, compatível pino a pino. Peças de encapsulamento diferente que exigem retrabalho na PCB são excluídas.
Nenhuma alternativa drop-in disponível para este produto.
Solicitar alternativasR5F21114FP#W4 Classificações máximas e características elétricas
| CPU Architecture | R8C/Tiny-series 16-bit core |
| CPU Bit Width | 16 bit |
| Maximum CPU Frequency | 20 MHz |
| Program Memory | 16 KB Flash (16K x 8) |
| RAM | 1 KB (1K x 8) |
| Number of I/O Pins | 22 pins |
| Encapsulamento | 32-LQFP, 7 x 7 mm |
| Package Construction | 32-pin plastic-molded LQFP |
| Oscillator Type | Internal oscillator |
| Semiconductor Process | High-performance silicon-gate CMOS |
| Shipping Package | Tape-and-reel (TR) |
Guia de Configuração de Pinos do R5F21114FP#W4 tape-and-reel (tr)
Configuração de pinos para R5F21114FP#W4 (pacote tape-and-reel (tr)). Este CI digital inclui GPIO, interfaces de comunicação (UART, SPI, I2C) e pinos de alimentação. Consulte o datasheet do fabricante para funções alternativas dos pinos e opções de configuração. Essencial para projeto de sistemas embarcados e layout de PCB.
Nenhum dado detalhado de pinagem disponível para R5F21114FP#W4.
Consulte a ficha técnica para a configuração completa dos pinos.
Aplicações típicas
R5F21114FP#W4 é adequado para 6 aplicaçãos: Small Appliance Control, Industrial Sensor Interface, Instrumentation and Control Panel, Compact Motor and Actuator Controller, Communication Gateway Module, Programmable Timer and Sequencer.
Small Appliance Control
The R5F21114FP#W4 fits compact appliance controllers that coordinate user inputs, display indicators, sensors, and a small number of actuators. Its 16-bit R8C/Tiny core and 20 MHz operating frequency provide responsive control logic without an external processor, while 16 KB of Flash holds startup routines, a state machine, and compact peripheral handlers. The 1 KB RAM limit requires disciplined memory allocation, particularly when multiple buffered communication tasks run concurrently. Its 32-LQFP package also supports automated assembly in space-constrained consumer and light-industrial products.
Recomendado
Industrial Sensor Interface
The R5F21114FP#W4 is appropriate for a local sensor interface that converts measurements into scaled control or status data. Its 22 I/O pins can support digital sensors, discrete inputs, alarm outputs, and a communication peripheral, while the 20 MHz R8C core permits deterministic sampling and filtering routines. The 16 KB Flash capacity is well suited to a focused acquisition and preprocessing program, although the 1 KB RAM requires streaming or reduced buffering for high-rate data. Galvanic isolation and protection must be designed outside the MCU.
Recomendado
Instrumentation and Control Panel
A human-interface control panel can use the R5F21114FP#W4 to scan buttons, drive indicators, validate operator commands, and maintain machine state. The 16-bit word-oriented CPU architecture is useful for menu and numeric operations, and the 20 MHz clock provides ample execution margin for a responsive front panel. Its 22 I/O pins can divide among switch inputs, LED outputs, and serial communication. The 1 KB RAM may constrain complex display buffering, so firmware should avoid copying entire screens or retaining unnecessary history.
Recomendado
Compact Motor and Actuator Controller
The R5F21114FP#W4 can serve as the supervisory controller in a compact actuator system that combines limit sensors, interlocks, status indicators, and a low-duty motor or solenoid driver. Its 20 MHz processing rate supports timely state-machine updates and debounce logic, while its 16 KB Flash is adequate for a focused controller application. The device does not replace power transistors, current sensing, or protection hardware. Firmware must include safe-state behavior for startup, communication loss, and invalid sensor combinations.
Recomendado
Communication Gateway Module
The R5F21114FP#W4 is suitable for a protocol-conversion or gateway module that receives compact commands, validates them, updates local state, and forwards status information. Its 16 KB Flash can contain framing logic and command tables, while the 16-bit CPU supports efficient handling of byte and word operations. With 1 KB RAM and 22 I/O pins, the device is best suited to one or two communication interfaces rather than high-throughput multi-protocol routing. Pin multiplexing and peripheral availability must be checked against the exact datasheet.
Recomendado
Programmable Timer and Sequencer
The R5F21114FP#W4 can implement a programmable timer, test sequencer, or process controller where multiple timed steps must be coordinated through discrete sensors and outputs. Its 20 MHz clock supports precise software timing, and the 16 KB Flash provides room for timing tables and sequence logic. The limited 1 KB RAM favors timer-state machines over large event logs, while the 22 I/O pins support the necessary discrete interfaces. Crystal or timing-component selection and output jitter should be evaluated against the required accuracy.
Recomendado
Resumo dos produtos recomendados
Dados de referência de engenharia para R5F21114FP#W4 — comparação, orientação de projeto e informações de conformidade.
Guia de seleção
Comparação com alternativas
| Parâmetro | Este produto |
|---|---|
| Package | 32-LQFP (7 x 7 mm) |
| Brand | Renesas Electronics |
| CPU Architecture | R8C/Tiny-series 16-bit core |
| Maximum CPU Frequency | 20 MHz |
| Program Memory | 16 KB Flash |
| RAM | 1 KB |
| Number of I/O Pins | 22 pins |
| Shipping Package | Tape-and-reel (TR) |
Principais diferenciais
- Compact 16-bit control platform (vs R5F21114FP base designation)
- Integrated memory and I/O balance (vs R5F21114FP#U0)
- Production-oriented 7 x 7 mm LQFP format (vs R5F21114FP base designation)
Notas de projeto
Assign every LQFP pin by consulting the R8C/11 Group Datasheet pin-description table, including power, reset, clock, programming, and no-connect positions. Place the MCU close to the power-entry and decoupling components, keep programming access unobstructed, and route sensitive clock or reset signals away from switching nodes. The 7 x 7 mm land pattern should follow the manufacturer’s package drawing rather than a generic LQFP footprint.
Build the supply network around the voltage limits, decoupling values, and startup requirements stated in the R8C/11 Group Datasheet. Place bulk and local decoupling capacitance at the appropriate power pins, provide a clean return path, and avoid sharing high-current return paths beneath the MCU. Confirm regulator headroom, inrush behavior, and any required external reset circuit before schematic approval.
Do not assume that every 32-LQFP R8C/11 device is software- and pin-compatible. Firmware, interrupt priorities, peripheral channels, clock settings, and package assignments can differ even when memory sizes appear similar. Also plan explicitly around the 1 KB RAM limit by measuring stack depth and static allocation. Validate the complete project with the intended compiler, debugger, programmer, and production programming procedure.
Informações de conformidade
The Renesas product listing identifies R5F21114FP#W4 as a Non Promotion R8C/1x/11 microcontroller. No definitive RoHS, REACH, AEC-Q100, lead-free, halogen-free, or conflict-minerals statement was identified, so these fields remain unknown.
