R5F21184DD#U0 - 16-Bit 20MHz R8C MCU | Renesas
N.º da peça: R5F21184DD#U0 ✓ AtivoR5F21184DD#U0 Visão geral
A microcontroller is a programmable semiconductor that integrates a CPU core, memory, peripherals, and input/output circuitry into one component. The R5F21184 belongs to the R8C/1x/18 product family and provides 13 I/O pins, allowing the target R8C CPU core to control external peripherals, acquire digital signals, and manage embedded-system tasks. The 16 KB Flash configuration provides on-chip program storage, while the 1 KB RAM supports working data and stack operations.
The principal verified performance characteristics are a 16-bit CPU architecture, a 20 MHz operating frequency, 16 KB of built-in Flash, 1 KB of RAM, a 2.7 V to 5.5 V supply range, and 13 available I/O pins. The operating-temperature range of -20 °C to +85 °C supports use across commercial and industrial ambient conditions when the complete system is designed within the specified electrical limits.
The R8C/1x/18 architecture is useful for compact embedded controllers that require more control than a simple logic device but do not need a high-end processor. Potential applications include industrial control, instrumentation, appliance control, data acquisition, and communication equipment. The target MCU's 20 MHz clock and 16-bit instruction set are suitable for coordinating real-time control loops and handling multiple peripheral functions without an external memory device.
The through-hole SDIP-20 package simplifies prototyping, inspection, and repair compared with fine-pitch surface-mount packages. It also makes the device suitable for legacy control boards and socket-based assemblies, provided the board layout matches the Renesas R5F21184DD#U0 pin arrangement. Designers must verify the complete pin configuration, peripheral functions, clock requirements, and timing limits in the manufacturer datasheet before production release.
This product data distinguishes verified distributor specifications from information requiring datasheet confirmation. Published pricing is $3.8098 per unit as of 2026-10-28, and the official Renesas product listing indicates that the R5F21184DD#U0 remains orderable. The detailed pinout, electrical timing, peripheral list, and memory map should be taken directly from the applicable R8C/1x/18 hardware documentation.
Alternativas drop-in para R5F21184DD#U0 — 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 alternativasR5F21184DD#U0 Classificações máximas e características elétricas
| Product Type | 16-bit microcontroller |
| Manufacturer | Renesas Electronics Corporation |
| CPU Core | R8C |
| Product Family | R8C/1x/18 |
| CPU Word Length | 16 bit |
| Maximum Operating Frequency | 20 MHz |
| Built-in Flash Memory | 16 KB (16K x 8) |
| RAM | 1 KB |
| Tensão de alimentação de operação | 2.7 V to 5.5 V |
| I/O Pin Count | 13 pins |
| Temperatura de operação | -20 °C to +85 °C |
| Encapsulamento | 20-SDIP |
| Package Pitch | 0.300 inch (7.62 mm) |
| Tipo de montagem | Through-hole |
| Status RoHS | Compliant |
Guia de Configuração de Pinos do R5F21184DD#U0 0.300 inch (7.62 mm)
Configuração de pinos para R5F21184DD#U0 (pacote 0.300 inch (7.62 mm)). 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 R5F21184DD#U0.
Consulte a ficha técnica para a configuração completa dos pinos.
Aplicações típicas
R5F21184DD#U0 é adequado para 6 aplicaçãos: Industrial Control Systems, Appliance and Equipment Controllers, Instrumentation and Data Acquisition, Legacy Board Repair and Upgrade, Communication Equipment and Protocol Controllers, Embedded Timing and Sequence Control.
Industrial Control Systems
The R5F21184DD#U0 fits compact industrial controllers that need deterministic embedded processing without a high-performance processor. Its 16-bit R8C core operates at up to 20 MHz, while 13 I/O pins provide interfaces for sensors, switches, relays, indicators, and external control logic. The 16 KB Flash and 1 KB RAM provide on-chip program and working storage. The 2.7 V to 5.5 V operating range supports 3.3 V or 5 V system rails, and the -20 °C to +85 °C specification covers many commercial and industrial ambient conditions. The 20-SDIP through-hole format is particularly practical for legacy control boards, socket-based assemblies, and prototypes where solderability and easy inspection matter.
Appliance and Equipment Controllers
The R5F21184DD#U0 can serve as the central controller in appliances and specialized equipment where a modest 16-bit CPU, local program storage, and moderate I/O capacity are sufficient. Its 20 MHz R8C core can coordinate discrete inputs, output sequencing, and user-interface functions, while 16 KB of built-in Flash stores application firmware. Thirteen I/O pins leave board designers with a defined interface budget for switches, indicators, displays, and control signals. The 2.7 V to 5.5 V supply range permits integration with common embedded rails. Because the verified excerpts do not enumerate analog channels, timers, or communication peripherals, the applicable hardware manual must be checked before assigning a specific sensor or actuator interface.
Instrumentation and Data Acquisition
The R5F21184DD#U0 is appropriate for instrumentation front ends that acquire digital measurements and transfer them to a host or display controller. Its 16-bit R8C architecture and 20 MHz clock provide processing capability for sampling logic, status handling, calibration tables, and command parsing. The 16 KB Flash can hold firmware, while 1 KB of RAM provides limited working space that must be budgeted carefully for buffers and the stack. Thirteen I/O pins can support digital measurement channels, mode controls, indicators, and serial or parallel peripheral connections if those functions are available in the exact device configuration. The -20 °C to +85 °C range supports room-temperature and extended industrial environments where environmental qualification is otherwise suitable.
Legacy Board Repair and Upgrade
The R5F21184DD#U0 is especially relevant to repair, modernization, or controlled redesign of legacy through-hole controller boards. Its 20-SDIP package allows straightforward socket or PCB-level replacement when the original board uses a compatible layout. The 16-bit R8C core, 20 MHz operating frequency, 16 KB Flash, and 1 KB RAM preserve the broad device architecture of the original controller, enabling an existing firmware approach to be evaluated. Verification must still cover the full pin map, clock source, reset behavior, programming method, and peripheral allocation. The through-hole construction also supports prototypes and bench fixtures in which visual inspection, rework, and individual IC substitution are more valuable than minimal board area.
Communication Equipment and Protocol Controllers
The R5F21184DD#U0 can support protocol-handling and supervisory functions in compact communication equipment when its verified peripherals and I/O budget satisfy the design. The 16-bit R8C core at 20 MHz can manage framing, command processing, status reporting, and coordination between an external transceiver and the rest of the system. Sixteen kilobytes of Flash provides local firmware storage, while 1 KB of RAM can hold short working buffers. Thirteen I/O pins can support modem-control signals, indicators, and configuration interfaces. Engineers should verify the exact UART, SPI, or other serial resources in the manufacturer documentation because those peripheral assignments are not included in the verified search results and cannot be safely inferred from the general R8C family name.
Embedded Timing and Sequence Control
The R5F21184DD#U0 is a practical candidate for small sequencing controllers where a microcontroller must execute ordered outputs and respond to discrete inputs. Its 16-bit architecture at 20 MHz provides more computation and addressing flexibility than a basic 8-bit controller, while the 13 available I/O pins are useful for stepper or relay sequencing, interlocks, and status indicators. On-chip resources consist of 16 KB Flash for firmware and 1 KB RAM for runtime state. The 2.7 V to 5.5 V supply range supports common logic environments. Timers, interrupt sources, and any precision timing features must be confirmed in the hardware manual before the device is used where timing accuracy directly affects actuator behavior or safety-related sequencing.
Dados de referência de engenharia para R5F21184DD#U0 — comparação, orientação de projeto e informações de conformidade.
Guia de seleção
Comparação com alternativas
| Parâmetro | Este produto |
|---|---|
| Package | 20-SDIP |
| Brand | Renesas Electronics |
| CPU Architecture | 16-bit R8C |
| Maximum Operating Frequency | 20 MHz |
| Built-in Flash Memory | 16 KB |
| RAM | 1 KB |
| Operating Supply Voltage | 2.7 V to 5.5 V |
| I/O Pin Count | 13 pins |
| Operating Temperature | -20 °C to +85 °C |
| Mounting Type | Through-hole |
| Package Pitch | 0.300 inch (7.62 mm) |
| RoHS Status | Compliant |
Principais diferenciais
- 16-bit processing with a 20 MHz clock (vs Generic 8-bit alternatives)
- Integrated memory reduces external component count (vs Memory-expanded 8-bit controllers)
- Through-hole package supports serviceable assemblies (vs Fine-pitch surface-mount MCUs)
Notas de projeto
Confirm the physical pin pitch and footprint against the manufacturer package drawing before layout release. The verified package is 20-SDIP with a 0.300-inch, or 7.62 mm, pitch and through-hole construction. The supplied package-library set does not include a dedicated SDIP-20 drawing, so a default diagram is used rather than presenting a potentially misleading footprint image.
Design the supply network for the verified 2.7 V to 5.5 V operating range. Place the required bypass capacitors close to the device power pins according to the Renesas hardware manual, and ensure the source can start and remain within the allowed voltage at the controller's worst-case load. Do not assume that 5.5 V is appropriate for every peripheral or connected I/O device.
Do not select a replacement solely because another MCU has a similar Flash size or uses an R8C-family CPU. A true drop-in choice requires the same 20-SDIP footprint and complete pin mapping, compatible reset and clock behavior, suitable I/O electrical levels, and equivalent required peripherals. None of those criteria was documented for an alternative MPN in the supplied cross-reference results.
Reserve access to all programming and debug signals and route sensitive clock and reset inputs away from switching nodes wherever the board architecture permits. Because the verified excerpts do not specify the complete peripheral map or clock pins, the schematic and layout should be reviewed against the official R8C/1x/18 hardware documentation before fabrication.
Informações de conformidade
LCSC and JLCPCB identify the R5F21184DD#U0 as RoHS compliant. No verified evidence was supplied for REACH, lead-free status, halogen-free status, conflict-minerals reporting, or automotive qualification.
