R5F21153SP#U0 - 16-Bit 20MHz R8C MCU | Renesas Electronics
N.º da peça: R5F21153SP#U0 ✓ AtivoR5F21153SP#U0 Visão geral
A microcontroller is a programmable system-on-chip that integrates a CPU, memory, peripherals, and input/output circuitry into one package. The R8C/Tiny Series core belongs to the broader hierarchy of embedded processors, microcontrollers, and semiconductor devices. It provides a compact implementation for industrial controls, sensor interfaces, appliances, instrumentation, and other applications requiring low-cost local processing.
The R5F21153SP#U0 operates from a 3 V or 5 V supply and provides 12 KB of program Flash plus 768 bytes of RAM. Its 10-bit A/D converter supports analog measurements required by sensor and control systems. The 20-pin LSSOP package reduces board area compared with larger leaded packages, although its narrow lead pitch requires careful PCB layout and manufacturing controls.
The device uses Renesas high-performance silicon gate CMOS technology and the R8C/Tiny Series CPU core. Sophisticated instructions improve execution efficiency, while the integrated Flash, RAM, analog conversion, and serial I/O support a compact embedded design without requiring several external devices. Typical system benefits include lower component count, reduced board area, and deterministic peripheral control.
R5F21153SP#U0 is particularly suitable for small control panels, temperature-measurement equipment, motor and actuator controllers, simple instrument interfaces, and appliance control boards. The analog inputs can measure potentiometers, resistive sensors, and other slowly varying signals when paired with suitable external conditioning circuitry.
For PCB implementation, place the decoupling capacitor at the supply pins with the shortest possible trace, maintain clearances appropriate for the LSSOP lead pitch, and route analog inputs away from switching nodes. Confirm oscillator, reset, programming, and peripheral configurations in the manufacturer datasheet before releasing production artwork.
This page consolidates the Renesas product information, distributor identification, lifecycle guidance, and application-focused design guidance for engineers evaluating the R5F21153SP#U0. Renesas supports this R8C/15 device for customers that previously adopted it and recommends the RL78/G12 Group for new designs.
Alternativas drop-in para R5F21153SP#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 alternativasR5F21153SP#U0 Classificações máximas e características elétricas
| Product Type | 16-bit CMOS microcontroller |
| CPU Core | R8C/Tiny Series |
| Frequência máxima de clock | 20 MHz |
| Program Memory | 12 KB Flash |
| Program Memory Organization | 12K x 8 bits |
| RAM | 768 x 8 bits |
| Tensão de alimentação de operação | 3 V or 5 V |
| A/D Converter | 10-bit |
| A/D Converter Channels | 4 channels |
| Encapsulamento | 20-pin plastic molded LSSOP |
| Package Type | LSSOP-20, 4.4 mm body width |
| Process Technology | High-performance silicon gate CMOS |
| Temperatura de operação | -20 °C to +85 °C ambient |
| Lead-Free Status | Pb-free |
| Serial Interface | SIO |
| Operating System | Bare-metal R8C/Tiny Series microcontroller |
Guia de Configuração de Pinos do R5F21153SP#U0 lssop-20, 4.4 mm body width
Configuração de pinos para R5F21153SP#U0 (pacote lssop-20, 4.4 mm body width). 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 R5F21153SP#U0.
Consulte a ficha técnica para a configuração completa dos pinos.
Aplicações típicas
R5F21153SP#U0 é adequado para 6 aplicaçãos: Industrial Sensor Interface, Appliance Control Board, Temperature and Level Instrumentation, Simple Motor and Actuator Control, Digital Panel and User Interface, Legacy Equipment Maintenance.
Industrial Sensor Interface
The R5F21153SP#U0 fits compact industrial sensor interfaces that require local conversion and control without a larger processor package. Its four-channel, 10-bit A/D converter can sample resistive sensors, potentiometers, and conditioned analog signals, while the 20 MHz R8C/Tiny Series core handles filtering, scaling, threshold decisions, and status reporting. The 3 V or 5 V operating range supports both legacy 5 V control electronics and lower-energy designs. Because the converter is intended for many embedded measurement tasks, define the analog input range and reference strategy in the same design review. Place input traces away from switching nodes, use a stable reference arrangement, and calibrate offset and gain during production if higher measurement repeatability is required.
Appliance Control Board
The R5F21153SP#U0 is appropriate for appliance control boards that combine analog sensing with discrete actuator decisions. Its 12 KB of Flash can hold a compact control program, while 768 bytes of RAM supports modest working states, timers, and communication buffers. The 16-bit R8C/Tiny Series core executes the established instruction set efficiently, and the 20-pin LSSOP reduces the footprint compared with larger microcontroller packages. A typical design could read temperature or level signals, coordinate a relay or motor, and report operating state over SIO. Validate actuator drive circuitry separately so the MCU is not exposed to inductive transients, and use the manufacturer timing and pin information to implement a reliable reset and brownout strategy.
Temperature and Level Instrumentation
The R5F21153SP#U0 can serve as the embedded controller in a compact temperature, level, or process-instrumentation module. Four 10-bit ADC channels provide enough input capacity for several conditioned analog measurements, and the 20 MHz core can apply calibration coefficients, implement hysteresis, and update an operator interface. The 3 V or 5 V supply choice enables integration with both industrial signal-conditioning hardware and lower-voltage portable equipment. For reliable measurements, establish the ADC reference relationship, input settling time, and gain error through the datasheet rather than assuming full-scale accuracy. Firmware should include sensor plausibility checks, stable-state detection, and fault reporting rather than relying on instantaneous ADC readings alone.
Simple Motor and Actuator Control
The R5F21153SP#U0 can control small motors, valves, relays, and electromechanical actuators where the design needs a compact microcontroller and a few analog inputs. Its 20 MHz R8C/Tiny Series core provides deterministic timing for step sequences, debounce handling, timeout monitoring, and actuator state management. The 10-bit ADC can support feedback from position, pressure, or current-related sensor channels after appropriate scaling. The MCU should not drive inductive loads directly; use suitable transistor or driver circuitry and protect the supply against switching transients. Validate start-up behavior, maximum duty cycle, and thermal conditions in the final mechanism because the microcontroller package is not the primary power-dissipation element for the actuator.
Digital Panel and User Interface
The R5F21153SP#U0 is useful in small digital panels and human-interface modules where a compact controller must read controls and manage indicators. Its 16-bit core can support keypad scanning, display sequencing, menu logic, and event handling, while the Flash and RAM capacities are appropriate for focused embedded firmware rather than graphical applications. The analog input capability can add potentiometer-based level adjustment or analog key sensing. The 20-pin LSSOP leaves a small board footprint, but the narrow package demands accurate assembly design and careful escape routing. Confirm pin multiplexing and peripheral priorities in the manufacturer documentation, and provide signal conditioning where switches or resistive dividers are connected directly to analog inputs.
Legacy Equipment Maintenance
The R5F21153SP#U0 is best positioned in maintenance and continuation projects for equipment already designed around the R8C/15 Group. Renesas states that this group is supported for customers that previously adopted these products, which makes it relevant to repair, controlled redesign, and lifecycle-extension programs. The 20 MHz core, 12 KB Flash, 768 bytes of RAM, and 10-bit ADC can reproduce an established control function without redesigning the complete product architecture. During migration, compare firmware behavior, memory use, peripheral configuration, and timing before changing any code. A new-product program should follow Renesas's recommendation to use the RL78/G12 Group instead of assuming a software-transparent migration.
Dados de referência de engenharia para R5F21153SP#U0 — comparação, orientação de projeto e informações de conformidade.
Guia de seleção
Comparação com alternativas
| Parâmetro | Este produto |
|---|---|
| CPU Core | R8C/Tiny Series, 16-bit |
| Maximum Clock Frequency | 20 MHz |
| Program Memory | 12 KB Flash |
| RAM | 768 x 8 bits |
| Operating Supply Voltage | 3 V or 5 V |
| A/D Converter | 4-channel, 10-bit |
| Package | 20-pin plastic molded LSSOP |
| Brand | Renesas Electronics |
| Operating Temperature | -20 °C to +85 °C ambient |
| New-Design Recommendation | RL78/G12 Group |
Principais diferenciais
- Compact 16-bit control in a 20-pin package (vs A larger 28-pin or 40-pin general-purpose MCU)
- Integrated analog acquisition for compact controls (vs A digital-only microcontroller requiring external conversion hardware)
- Dual nominal supply operation (vs A fixed 3.3 V or fixed 5 V MCU)
- Compatibility-focused continuation for adopted R8C/15 designs (vs A new MCU family)
Notas de projeto
Treat the 20-pin LSSOP as a fine-pitch assembly and validate the land pattern against the Renesas package drawing before fabrication. Place the primary supply-decoupling capacitor adjacent to the supply and ground pins, use a short return path, and route high-current or fast-switching nets away from the analog inputs. Inspect solder bridges and pin wicking after reflow because closely spaced leads can bridge even when the nominal footprint is correct.
Design the supply network for both 3 V and 5 V operating conditions. Confirm the permitted voltage range, startup behavior, and power-consumption limits in the manufacturer datasheet. Provide local high-frequency bypass and adequate bulk capacitance for the complete board, while isolating inductive loads and motor transients so that brownout events or supply spikes do not disturb the controller. Use the Request a Quote form for current supply and allocation information.
Keep analog inputs short and isolate them from digital switching activity. If the 10-bit ADC measures resistive sensors or potentiometers, use a defined reference, limit source impedance, and include filtering appropriate to the intended bandwidth. Verify acquisition timing and accuracy from the manufacturer electrical characteristics, and calibrate offset and gain if the application requires repeatable measurements.
Do not treat the RL78/G12 Group recommendation as proof of a drop-in migration. The R5F21153SP#U0 uses the R8C/Tiny Series core and has specific 20-LSSOP pin assignments, Flash organization, RAM allocation, and peripheral behavior. For an existing design, preserve the current device and firmware unless a complete hardware and software qualification has been completed for the proposed successor.
Informações de conformidade
The Mouser product listing identifies R5F21153SP#U0 as Pb-free. No exact-ordering-code RoHS, REACH, halogen-free, or conflict-minerals declaration appears in the manufacturer and distributor data used for this page.
