R5F211B2SP#U0 - 16-Bit 20MHz 8KB MCU | Renesas Electronics
N.º da peça: R5F211B2SP#U0 ✗ Fim de vidaR5F211B2SP#U0 Visão geral
A microcontroller is an integrated semiconductor containing a processor core, program memory, data memory, timers, serial interfaces, and I/O in one package. Within the embedded-control hierarchy, this part belongs to the R8C family and the R8C/1B group. The R5F211B2SP#U0 is intended for compact control systems that need deterministic low-power operation, modest on-chip program storage, and a low-pin-count surface-mount footprint.
The verified part data identifies a 20 MHz operating speed, 8 KB flash memory, 2.7 V to 5.5 V supply range, and a -20°C to +85°C operating-temperature range. Additional listed features include data flash, a watchdog timer identified as WDTO, and a Pb-free 20-LSSOP package. These characteristics make the device relevant to industrial control, metering, embedded automation, motor-control, and low-power board designs.
The R8C architecture is suited to compact embedded applications in which a 16-bit instruction set and dedicated peripherals can replace a larger general-purpose controller. Its 20 MHz maximum clock rate supports responsive control tasks, while 8 KB of embedded flash allows firmware, constants, and application logic to remain on the same device. Operating across both 3 V and 5 V system rails simplifies adoption in mixed-voltage embedded equipment, provided each external peripheral and I/O signal remains within the device's electrical limits.
Typical uses include compact motor controllers, industrial sensing modules, utility metering, appliance control panels, and low-power monitoring equipment. The small 20-LSSOP package is useful for space-constrained boards, although exposed-pad thermal behavior, pin multiplexing, and supply bypassing should be evaluated against the exact board layout. The WDTO feature supports supervisory control of firmware execution, while data flash can retain parameters or calibration information when the application requires nonvolatile local storage.
Designers should follow the manufacturer datasheet for the complete pin assignment, peripheral configuration, electrical characteristics, and programming interface. Decoupling capacitors should be placed close to the supply pins, unused inputs should be configured to avoid unintended current, and firmware should include watchdog-service and reset-handling logic. Because public results confirm the package and functional identity but do not expose a complete verified pin map, this page does not infer individual pin names.
This page consolidates verified distributor inventory information, manufacturer identification, family-level alternatives, and practical selection guidance. It adds comparison context and engineering cautions without inventing missing electrical limits, pin functions, or distributor price tiers, making it easier for engineers to determine whether the R5F211B2SP#U0 fits an existing 20-LSSOP design.
Alternativas drop-in para R5F211B2SP#U0 — mesmo encapsulamento, compatível pino a pino. Peças de encapsulamento diferente que exigem retrabalho na PCB são excluídas.
R5F211A2DSP#U0
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
R5F211A2NP#U0
✅ Drop-InConsulte o preço
Ver ficha técnica →R5F211A1SP#U0
✅ Drop-InConsulte o preço
Ver ficha técnica →R5F21184SP#U0
✅ Drop-InConsulte o preço
Ver ficha técnica →R5F211A2SP#U0
✅ Drop-In ⚠️ Especificações não verificadasConsulte o preço
Ver ficha técnica →R5F211B2SP#U0 Classificações máximas e características elétricas
| Product Type | 16-bit microcontroller IC |
| CPU Core | R8C |
| Device Group | R8C/1B |
| Maximum Operating Frequency | 20 MHz |
| Flash Memory | 8 KB |
| Flash Organization | 8K x 8 bits |
| Supply Voltage Range | 2.7 V to 5.5 V |
| Nominal Supply Voltages | 3 V / 5 V |
| Faixa de temperatura de operação | -20°C to +85°C |
| Encapsulamento | 20-LSSOP (PLSP0020JB-A) |
| Package Width | 4.40 mm |
| Tipo de montagem | Surface mount |
| Data Flash | Supported |
| Watchdog Timer | WDTO supported |
| Lead-Free Status | Pb-free |
| Instruction Set | 16-bit |
Guia de Configuração de Pinos do R5F211B2SP#U0 4.40 mm
Configuração de pinos para R5F211B2SP#U0 (pacote 4.40 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 R5F211B2SP#U0.
Consulte a ficha técnica para a configuração completa dos pinos.
Aplicações típicas
R5F211B2SP#U0 é adequado para 6 aplicaçãos: Compact Industrial Control, Metering and Data Acquisition, Motor and Actuator Control, Low-Power Monitoring Equipment, Appliance and Embedded System Control, IoT Edge and Sensor Nodes.
Compact Industrial Control
The R5F211B2SP#U0 fits compact industrial controllers because its 16-bit R8C core runs at up to 20 MHz while retaining a compact 20-LSSOP footprint. The device operates from 2.7 V to 5.5 V, allowing implementation around either 3.3 V or 5 V control rails, and the verified -20°C to +85°C range suits many factory environments. Its 8 KB flash can hold compact sequencing, state-machine, and interface firmware. The WDTO watchdog provides a useful supervisory function for unattended equipment, while data flash can preserve calibration or configuration values. Before schematic release, verify peripheral availability, pin multiplexing, startup behavior, and watchdog timing in the manufacturer datasheet.
Recomendado
Metering and Data Acquisition
R5F211B2SP#U0 is suitable for compact metering modules that need periodic measurement, local processing, and nonvolatile parameter storage. Its 8 KB flash supports focused acquisition firmware, while the listed data flash feature can retain counters, calibration coefficients, or device settings independently of the main program area. The 20 MHz maximum clock rate provides responsive handling of sensor and digital-interface events. Operating from 2.7 V to 5.5 V also supports both battery-oriented and 5 V industrial designs. Engineer the system around the verified 20-LSSOP footprint, but confirm the exact ADC, serial-interface, and timer resources needed for the measurement chain before committing to this exact derivative.
Recomendado
Motor and Actuator Control
The R5F211B2SP#U0 can serve as the control processor in small motor, valve, or actuator modules where deterministic timing and compact firmware are priorities. Its 16-bit R8C core operates at up to 20 MHz, which is suitable for closed-loop sequencing, protection handling, and communication tasks. The 2.7 V minimum operating voltage supports reduced-voltage designs, while the 5.5 V maximum accommodates common 5 V actuator-control environments. WDTO can help recover unattended equipment from firmware faults, and the 20-LSSOP package limits board area. Exact PWM channels, encoder interfaces, output-drive capability, and timing limits must be confirmed from the datasheet before driving a particular motor or power stage.
Recomendado
Low-Power Monitoring Equipment
R5F211B2SP#U0 is appropriate for remote monitoring and condition-sensing nodes where a 16-bit control core, local flash, and low pin count are more valuable than high compute throughput. The 2.7 V to 5.5 V range permits operation from low-energy or industrial supplies, and the verified 20 MHz clock rate can handle scheduled sampling and local decision logic. Data flash may hold configuration or event metadata, while WDTO helps recover firmware that stops responding. Power consumption still depends on the selected clock, peripheral states, and sleep configuration, so use the manufacturer guidance for those functions. Confirm available timers, wake-up sources, and I/O levels for the intended sensor architecture.
Recomendado
Appliance and Embedded System Control
The R5F211B2SP#U0 can implement the central controller in a compact appliance or embedded subsystem requiring sequential logic, user-interface support, and local fault supervision. Its 8 KB flash accommodates compact control firmware, and the 20 MHz R8C core provides more execution headroom than an 8-bit controller for multi-task routines. The 20-LSSOP package supports dense board layouts, and the 3.3 V or 5 V operating capability simplifies integration with common logic ecosystems. The WDTO feature can restart or flag a stalled control sequence, improving unattended-system resilience. Validate the selected derivative's I/O count, serial channels, timer resources, and programming workflow because those details are not available in the supplied distributor snippets.
Recomendado
IoT Edge and Sensor Nodes
R5F211B2SP#U0 is suited to compact IoT edge nodes that gather local sensor information and perform control functions without requiring a high-end processor. The 16-bit R8C core at 20 MHz can support protocol handling, filtering, and state management within an 8 KB firmware budget, while the 20-LSSOP package helps minimize PCB area. The verified 2.7 V to 5.5 V range allows use with 3.3 V sensor systems and 5 V peripheral rails, and data flash can preserve calibration or node configuration. The WDTO watchdog supports recovery in unattended installations. For a connected design, confirm the available serial interfaces, memory limits, and low-power modes in the manufacturer documentation before selecting the exact MCU derivative.
Recomendado
Resumo dos produtos recomendados
Dados de referência de engenharia para R5F211B2SP#U0 — comparação, orientação de projeto e informações de conformidade.
Guia de seleção
Comparação com alternativas
| Parâmetro | Este produto | R5F211A2DSP#U0 | R5F211A2NP#U0 | R5F211A1SP#U0 | R5F21184SP#U0 | R5F211A2SP#U0 |
|---|---|---|---|---|---|---|
| Brand | Renesas Electronics | Renesas Electronics | Renesas Electronics | Renesas Electronics | Renesas Electronics | Renesas Electronics |
| Package | 20-LSSOP (PLSP0020JB-A) | 20-LSSOP - same | 20-LSSOP - same | 20-LSSOP - same | 20-LSSOP - same | 20-LSSOP - same |
| Product Type | 16-bit microcontroller IC | 16-bit microcontroller | 16-bit R8C-family microcontroller | R8C/1B-family microcontroller | R8C/1B-family microcontroller | R8C/1B-family microcontroller |
| CPU Core | R8C | R8C | R8C | R8C | R8C | R8C |
Principais diferenciais
- Verified exact combination of 20 MHz operation and 8 KB flash (vs R5F211A2DSP#U0)
- Documented 2.7 V to 5.5 V operating range (vs R5F211A2NP#U0)
- Defined industrial temperature range (vs R5F211A2DSP#U0)
Notas de projeto
Do not assume that equal package and flash size proves drop-in compatibility. The verified alternatives are all associated with the R8C/1B family and 20-LSSOP format, but the supplied data does not expose their complete pin maps, peripheral matrices, or watchdog configurations. Before replacing R5F211B2SP#U0, compare every pin, alternate-function state, interrupt vector, clock setting, programming connector, and electrical limit against the manufacturer datasheets.
Plan the supply network for the verified 2.7 V to 5.5 V operating range and place the required bypass capacitors close to the MCU supply pins. Because exact capacitance, ESR, and ripple-current requirements are absent from the supplied records, use the manufacturer application guidance rather than generic values. Also confirm that every connected I/O signal remains within the selected device's voltage limits, particularly when the controller operates from 3.3 V while interfacing with 5 V peripherals.
Use the 20-LSSOP footprint with adequate clearance around adjacent pins and provide unobstructed access to the device's programming interface. Verify the official land pattern and pin-1 orientation before fabrication rather than relying on the generic package name. Where the selected board revision includes a socket or exposed programming pads, account for mechanical clearance, connector orientation, and the potential need to disconnect external circuitry during programming.
Firmware should service the WDTO watchdog and include defined behavior for watchdog reset, power-on reset, and interrupted writes to data flash. Avoid placing required state solely in volatile RAM. The verified 8 KB program-memory capacity can also constrain bootloader, application, and library combinations, so measure the final linked image and reserve space for future safety or field-update functions before production release.
Informações de conformidade
The Mouser result identifies the R5F211B2SP#U0 as Pb-free. No verified RoHS, REACH, halogen-free, conflict-minerals, or automotive-qualification statement was included in the supplied data. AEC-Q100 is not applicable because this is an industrial microcontroller rather than an automotive-qualified device.
