R5F21194DD#V0 - 20MHz 16-Bit Flash MCU | Renesas
N.º de pieza: R5F21194DD#V0 ✗ Fin de vidaR5F21194DD#V0 Descripción general
A microcontroller is a programmable semiconductor that integrates a CPU core, memory, and peripherals into one device. The R8C/1x/19 belongs to the R8C family of 16-bit embedded processors and is positioned above basic 8-bit controllers for compact systems that require efficient control, moderate computational throughput, and low-cost integration.
The verified device data identifies a 16 KB program memory organized as 16K x 8, a 1K x 8 RAM organization, and a maximum operating speed of 20 MHz. It uses an internal oscillator and provides 13 I/O pins. These characteristics make the R5F21194DD#V0 appropriate for appliance controls, small industrial controllers, sensor interfaces, and compact embedded products where a 20-pin through-hole package simplifies assembly and inspection.
Renesas describes the R8C/1x/19 family as being fabricated with a high-performance silicon-gate CMOS process and built around the R8C/Tiny Series CPU core. The family also provides 20-pin molded-plastic LSSOP and SDIP versions and a 28-pin plastic-molded HWQFN version. Exact interrupt, timer, serial-interface, supply-voltage, and peripheral details must be confirmed in the device-specific datasheet before schematic capture.
Typical design opportunities include motor-sequence controllers, temperature-monitoring instruments, simple industrial interfaces, programmable logic controllers, and low-cost embedded control modules. The 16 KB Flash capacity provides room for application code, while the 1 KB RAM supports working variables, stack activity, and intermediate data. The 13 I/O pins allow external sensors, switches, indicators, and actuators to be connected without an external I/O expander.
Designers should verify operating-voltage limits, clock behavior, peripheral pin assignments, reset requirements, and programming procedures against the manufacturer datasheet. Since this 20-SDIP variant uses through-hole leads, component height, soldering temperature, wave-solder compatibility, and mechanical clearance should also be reviewed before high-volume production.
This page combines verified distributor specifications, package and memory details, lifecycle guidance, practical design considerations, and same-package replacement analysis. It distinguishes documented facts from parameters that still require device-specific datasheet verification, helping engineers make an informed sourcing or design decision.
Alternativas directas para R5F21194DD#V0 — mismo encapsulado, compatible pin a pin. Se excluyen las piezas de otro encapsulado que requieren retrabajo de la PCB.
R5F21194DD#ES
✅ Sustitución directa📋 Alternativa de referencia (no en el catálogo)
R5F21193DD#V0
✅ Sustitución directa ⚠️ Especificaciones sin verificar📋 Alternativa de referencia (no en el catálogo)
R5F21194DD#V0 Valores máximos y características eléctricas
| Product Type | 16-bit microcontroller |
| Series | R8C/1x/19 |
| CPU Core | R8C/Tiny Series |
| Maximum Clock Speed | 20 MHz |
| Program Memory Size | 16 KB (16K x 8) |
| Program Memory Type | Flash |
| RAM Size | 1 KB (1K x 8) |
| Number of I/O Pins | 13 |
| Oscillator Type | Internal |
| Encapsulado | 20-SDIP (0.300 inch, 7.62 mm pitch) |
| Packaging | Tube |
| Estilo de montaje | Through-hole |
| Process Technology | High-performance silicon-gate CMOS |
Guía de configuración de pines de R5F21194DD#V0 20-sdip (0.300 inch, 7.62 mm pitch)
Configuración de pines para R5F21194DD#V0 (encapsulado 20-sdip (0.300 inch, 7.62 mm pitch)). 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 R5F21194DD#V0.
Consulte la hoja de datos para ver la configuración completa de patillas.
Aplicaciones típicas
R5F21194DD#V0 es adecuado para 6 aplicacións: Compact Appliance Controller, Industrial Sensor Interface, Temperature Monitoring Instrument, Motor Sequence Controller, Programmable Logic Controller, Embedded Data Acquisition Module.
Compact Appliance Controller
The R5F21194DD#V0 fits a compact appliance controller because its R8C/Tiny Series core provides 16-bit processing at up to 20 MHz, while 16 KB of Flash stores operating logic and 1 KB of RAM holds control state. The 13 I/O pins can connect switches, sensors, indicators, and discrete actuators without an external I/O expander. Its 20-SDIP format also supports straightforward through-hole insertion and inspection. Before finalizing the circuit, verify the exact pin assignments, timer channels, voltage limits, and motor-control requirements in the manufacturer datasheet.
Recomendado
Industrial Sensor Interface
The R5F21194DD#V0 can serve as the controller for a small industrial sensor interface when a 16-bit CPU, 16 KB program memory, and 1 KB RAM are sufficient. Its 13 I/O pins provide a practical interface for digital sensors, discrete inputs, status LEDs, and alarm outputs. The 20 MHz operating speed supports responsive sampling and control logic, but the design must be checked for verified timer, serial-interface, operating-temperature, and supply-voltage capabilities. Industrial suitability also requires enclosure design, surge protection, and grounding appropriate to the installation environment.
Recomendado
Temperature Monitoring Instrument
For a temperature-monitoring instrument, the R5F21194DD#V0 provides enough Flash and RAM for acquisition logic, calibration data, filtering, display control, and alarm handling. Its 13 I/O pins can support a sensor input, switch configuration, status indication, and communications interface. The 16-bit R8C/Tiny Series core operating at up to 20 MHz is appropriate for responsive digital filtering without a more complex processor. Confirm the device's available timers, ADC or comparator resources, and serial channels in the datasheet, because these specifications were not included in the supplied excerpts.
Recomendado
Motor Sequence Controller
The R5F21194DD#V0 can coordinate a basic motor or actuator sequence where 16-bit control, 16 KB Flash, and 13 I/O pins are adequate. Digital outputs can represent motor stages, direction commands, or enable signals, while inputs can receive limit switches and interlocks. The 20-SDIP package is practical for a through-hole control board with generous spacing. Engineers must verify timer outputs, duty-cycle limits, reset behavior, and electrical ratings before driving loads, and should add appropriate transistor drivers and protection rather than switching inductive currents directly.
Recomendado
Programmable Logic Controller
The R5F21194DD#V0 is suitable for a small programmable logic controller built around deterministic I/O sequencing. Its 16-bit core and 20 MHz maximum speed support efficient timer calculations and state-machine execution, while 16 KB of Flash accommodates application logic and 1 KB of RAM supports working variables. Thirteen I/O pins provide a practical base for inputs and outputs. The design should include isolation or level translation for external signals, watchdog or reset strategy, and verified peripheral assignments. Renesas's lifecycle statement favors an established R8C design rather than a new RL78/G12 migration.
Recomendado
Embedded Data Acquisition Module
The R5F21194DD#V0 can form the core of a compact data-acquisition module when the required code fits within 16 KB of Flash and temporary values fit within 1 KB of RAM. The 13 I/O pins allow multiplexing of sensors, digital controls, and status signaling, while the 20 MHz clock supports timed sampling and protocol handling. The part's 20-SDIP package simplifies through-hole prototyping and repair. Exact analog conversion capability, serial interfaces, operating limits, and interrupt resources must be confirmed from the device-specific datasheet before sensor or communications implementation.
Recomendado
Resumen de productos recomendados
Datos de referencia de ingeniería para R5F21194DD#V0 — comparación, orientación de diseño e información de cumplimiento.
Guía de selección
Comparación con alternativas
| Parámetro | Este producto | R5F21194DD#ES | R5F21193DD#V0 |
|---|---|---|---|
| Brand | Renesas Electronics | Renesas Electronics | Renesas Electronics |
| Package | 20-SDIP (0.300 inch, 7.62 mm pitch) | 20-SDIP (0.300 inch, 7.62 mm pitch) - same | 20-SDIP (0.300 inch, 7.62 mm pitch) - same |
| Product Class | 16-bit R8C/1x/19 microcontroller | 16-bit R8C/1x/19 microcontroller | Same-brand R8C/1x-family candidate; exact group requires verification |
Diferenciadores clave
- Documented memory configuration (frente a R5F21193DD#V0)
- Verified 20 MHz operating speed (frente a R5F21193DD#V0)
- Established through-hole package (frente a R5F21194DD#ES)
Notas de diseño
Do not substitute the MCU until the ordering suffix, operating grade, and electrical ratings have been checked. The R5F21194DD#ES and R5F21194DD#V0 share the documented package and core specifications, but the supplied results do not define the ES suffix. Renesas also states that R8C/19 is supported mainly for existing adopters and recommends RL78/G12 for new designs. Use the manufacturer cross-reference and current datasheet rather than assuming that an equivalent marking is fully interchangeable.
The 20-SDIP format provides ample lead spacing for through-hole assembly, but the PCB still requires adequate creepage, clearance, and a grounded return path around connected circuits. Confirm every pin against the manufacturer diagram before fabrication because individual pin names were not available in the verified excerpts. Leave programming or test access where practical, use a defined reset circuit, and place decoupling close to the supply pins according to the device-specific recommended layout.
Calculate the MCU supply budget from the exact voltage range and current limits listed in the R5F21194DD datasheet, because those values were not included in the supplied search results. Provide stable local decoupling and avoid routing noisy motor or relay currents near sensitive signal inputs. If peripheral devices share the supply, isolate switching currents or add filtering so controller and sensor rails remain within their verified limits.
The R5F21194DD#V0 offers 13 I/O pins, but the available count does not by itself confirm timer, serial, or interrupt functions. Review the complete peripheral map and pin-mux restrictions before assigning functions. Existing boards must also be checked for package-body clearance and lead length. A package drawing with the same nominal pin count is not sufficient evidence of pin-to-pin compatibility when signal multiplexing or electrical limits differ.
Información de cumplimiento
The supplied web results do not provide explicit RoHS, REACH, AEC-Q100, lead-free, halogen-free, or conflict-minerals declarations for R5F21194DD#V0. Compliance must be confirmed using the current Renesas product documentation and the manufacturer's material-declaration process.
