R5F211B1SP#W4 - 16-Bit 20MHz R8C MCU | Renesas
Référence : R5F211B1SP#W4 ✗ Fin de vieR5F211B1SP#W4 Présentation
A microcontroller is a programmable semiconductor that integrates a CPU core, nonvolatile program memory, volatile data memory, and peripheral I/O onto one device. The Renesas R8C family belongs to the embedded-controller hierarchy of 8-bit and 16-bit microcontrollers, combining compact code execution with dedicated interfaces for embedded control, data acquisition, and simple actuator systems. R8C devices are commonly programmed as compact embedded platforms rather than general-purpose desktop processors.
The R5F211B1SP#W4 combines a 16-bit R8C CPU core with 4 KB of flash memory and 384 x 8 bits of RAM. Its 20 MHz maximum speed supports efficient control-loop and peripheral operation, while 13 I/O pins provide interfaces for digital inputs, outputs, and external signals. The 20-LSSOP surface-mount package is suitable for compact industrial, instrumentation, consumer, and appliance assemblies where a moderate pin count and compact footprint are useful.
The 3 V or 5 V operating range allows the device to be used with common embedded supply rails. Its internal oscillator reduces the number of external frequency-setting components needed for basic clocked operation. Flash program memory retains firmware without a separate external memory device, while the integrated RAM provides working storage for variables, stack operations, and time-sensitive control functions.
Typical uses include compact sensor controllers, industrial interface modules, motor-control peripherals, instrument-control panels, and embedded appliance functions. Designers can use the available I/O to connect switches, indicators, sensors, communications peripherals, and discrete actuators. The combination of 20 MHz processing, 13 I/O, and a 20-pin package makes the device appropriate for embedded products that need more control capability than a simple logic device but do not require a large pin count or high external-memory capacity.
PCB implementation should follow the package drawing and pin-assignment information in the manufacturer datasheet, including the exposed-pad or thermal requirements applicable to the exact package variant. Firmware and peripheral configuration should also be checked against the current Renesas product documentation before production release, particularly for supply-voltage limits, oscillator settings, and port multiplexing.
This page organizes the confirmed R5F211B1SP#W4 electrical characteristics, package information, application guidance, comparison considerations, and design notes into a buyer-focused engineering reference. It also distinguishes confirmed device data from specifications that require direct confirmation in the manufacturer datasheet before schematic release or volume production.
Alternatives de remplacement direct pour R5F211B1SP#W4 — même boîtier, compatible broche à broche. Les références à boîtier différent nécessitant une retouche du PCB sont exclues.
Variantes de cette série
Modèles de la même série directement compatibles avec R5F211B1SP#W4 (même facteur de forme et même empreinte) — différant par Package, CPU Core, Program Memory Size, RAM Size, Supply Voltage.
R5F211B2SP#W4
✅ Remplacement direct ⚠️ Spécifications non vérifiées📋 Alternative de référence (hors catalogue)
R5F211B4SP#W4
✅ Remplacement direct ⚠️ Spécifications non vérifiéesContactez-nous pour le prix
Voir la fiche technique →R5F211B6SP#W4
✅ Remplacement direct ⚠️ Spécifications non vérifiées📋 Alternative de référence (hors catalogue)
R5F211B8SP#W4
✅ Remplacement direct ⚠️ Spécifications non vérifiées📋 Alternative de référence (hors catalogue)
R5F211B10SP#W4
✅ Remplacement direct ⚠️ Spécifications non vérifiées📋 Alternative de référence (hors catalogue)
R5F211B1SP#W4 Valeurs maximales et caractéristiques électriques
| Product Type | 16-bit microcontroller with R8C CPU core |
| CPU Core | R8C/1B |
| Maximum CPU Frequency | 20 MHz |
| Program Memory Type | Flash |
| Program Memory Size | 4 KB (4K x 8) |
| RAM Size | 384 x 8 bits |
| Number of I/O Ports | 13 |
| Tension d'alimentation | 3 V or 5 V |
| Oscillator Type | Internal |
| Boîtier | 20-LSSOP, 0.173 inch (4.40 mm) width |
| Type de montage | Surface mount |
| Lead-Free Status | Pb-free |
| Product Series | R8C/1x |
| Architecture | 16-bit |
| Programming Memory Organization | 4K x 8 bits |
Guide de configuration des broches du R5F211B1SP#W4 20-lssop, 0.173 inch (4.40 mm) width
Configuration des broches du R5F211B1SP#W4 (boîtier 20-lssop, 0.173 inch (4.40 mm) width). Ce circuit intégré numérique comprend des GPIO, des interfaces de communication (UART, SPI, I2C) et des broches d'alimentation. Consultez la fiche technique du fabricant pour les fonctions alternatives des broches et les options de configuration. Indispensable pour la conception de systèmes embarqués et la conception de circuits imprimés.
Aucune donnée de brochage détaillée disponible pour R5F211B1SP#W4.
Consultez la fiche technique pour la configuration complète des broches.
Applications typiques
R5F211B1SP#W4 convient pour 6 applications: Compact Industrial Sensor Controller, Digital Instrumentation and Panel Control, Appliance Sequence and Safety Control, Data Acquisition Front End, Motor and Actuator Peripheral Control, Communications Interface Module.
Compact Industrial Sensor Controller
The Renesas R5F211B1SP#W4 fits compact sensor-control modules that read digital or discrete inputs and drive alarms, indicators, or actuators. Its 16-bit R8C/1B core operates at up to 20 MHz, providing more control headroom than a simple logic device while retaining only 4 KB of flash and 384 x 8 bits of RAM. With 13 I/O ports, the device can support sensing, state indication, and local control functions in a 20-LSSOP package. The internal oscillator can reduce external clock-component count, although the final oscillator configuration and startup behavior must be verified in the manufacturer documentation.
Recommandé
Digital Instrumentation and Panel Control
The R5F211B1SP#W4 is suitable for small instrument panels that combine switch scanning, status LEDs, local displays, and simple data acquisition. Its 20 MHz maximum operating speed supports responsive sequencing and timing loops, while the 13 I/O ports can distribute control signals among the front panel and peripheral circuitry. The 4 KB flash capacity is appropriate for compact user-interface firmware, and the 384 x 8-bit RAM provides working memory for state variables and stack operations. A designer should map all port multiplexing requirements before PCB layout because the limited pin count can constrain simultaneous display, switch, and communications requirements.
Recommandé
Appliance Sequence and Safety Control
The R5F211B1SP#W4 can manage sequencing and discrete safety-related logic in compact appliances where relays, switches, indicators, and interlocks are controlled locally. Its 16-bit architecture and 20 MHz operating speed support deterministic control-loop execution, and the 13 I/O ports provide a practical interface count for appliance functions. The integrated 4 KB flash stores the control program, while 384 x 8 bits of RAM supports operating state and debounce buffers. For mains-connected equipment, maintain the required separation between low-voltage control circuitry and high-energy switching components, and validate timing and fault behavior independently of the MCU.
Recommandé
Data Acquisition Front End
The R5F211B1SP#W4 is appropriate for a small data-acquisition front end that samples external sensors, converts results through external circuitry, and transmits a compact status or measurement record. The 20 MHz R8C core provides useful timing capability for interrupt-driven sampling and communication tasks, while the 13 I/O ports can carry sensor inputs, control signals, and serial-interface lines. The 4 KB flash limit requires disciplined code organization, and the 384 x 8-bit RAM should be checked against buffering requirements. For higher-resolution or faster conversion needs, use the MCU to control a dedicated external ADC rather than treating the microcontroller itself as the converter.
Recommandé
Motor and Actuator Peripheral Control
The Renesas R5F211B1SP#W4 can serve as the local controller in a motor or actuator peripheral where it converts commands into discrete direction, enable, or speed-control signals. Its 16-bit R8C/1B core at up to 20 MHz supports timing loops and control sequences, while 13 I/O ports allow use of several control and feedback signals. The 20-LSSOP footprint supports compact assembly beside a driver, and the 3 V or 5 V supply capability accommodates common embedded logic levels. Actual motor-current, protection, and timing functions should remain in dedicated driver circuitry, with the MCU supervising limits and state rather than carrying the power stage directly.
Recommandé
Communications Interface Module
The R5F211B1SP#W4 can support a compact communications interface module that frames commands, interprets incoming data, and controls local indicators or relays. The 13 I/O ports provide a practical budget for serial signals, handshake lines, status LEDs, and configuration switches, while the 20 MHz R8C/1B core handles protocol processing and response timing. Its 4 KB program memory suits small fixed-function protocols, but protocol growth should be checked before finalizing the device selection. The internal oscillator may simplify the hardware, yet communications timing requirements must be evaluated to determine whether an external clock source or dedicated interface peripheral is necessary.
Recommandé
Récapitulatif des produits recommandés
Données de référence d'ingénierie pour R5F211B1SP#W4 — comparaison, recommandations de conception et informations de conformité.
Guide de sélection
Comparaison avec les alternatives
| Paramètre | Ce produit | R5F211B2SP#W4 | R5F211B4SP#W4 | R5F211B6SP#W4 | R5F211B8SP#W4 | R5F211B10SP#W4 |
|---|---|---|---|---|---|---|
| Brand | Renesas Electronics | Renesas Electronics | Renesas Electronics | Renesas Electronics | Renesas Electronics | Renesas Electronics |
| Package | 20-LSSOP | 20-LSSOP | 20-LSSOP | 20-LSSOP | 20-LSSOP | 20-LSSOP |
| CPU Architecture | 16-bit R8C/1B | 16-bit R8C/1B | 16-bit R8C/1B | 16-bit R8C/1B | 16-bit R8C/1B | 16-bit R8C/1B |
| Maximum CPU Frequency | 20 MHz | 20 MHz | 20 MHz | 20 MHz | 20 MHz | 20 MHz |
Principaux différenciateurs
- Compact 16-bit control in a 20-LSSOP package (vs R5F211B2SP#W4)
- Lower flash footprint for fixed-purpose firmware (vs R5F211B4SP#W4)
- Internal clock source reduces external component count (vs R5F211B6SP#W4)
Notes de conception
Create the PCB land pattern directly from the current 20-LSSOP package drawing and pin table in the Renesas documentation. Verify lead pitch, body width, toe geometry, and any exposed thermal structure before releasing the footprint. Place decoupling components at the device supply pins and route programming, reset, and oscillator connections before compacting the layout; a mechanically similar package with different terminal assignments cannot be accepted merely because its pin count matches.
Budget the 4 KB flash limit before committing to this MCU. Include bootloader space, interrupt-vector requirements, diagnostics, and configuration data in the memory estimate rather than measuring only the compiled application code. If firmware growth is likely, select a higher-memory R8C/1B variant during design review, or document the hardware and firmware changes required for a package-compatible upgrade.
Map all 13 I/O functions and their alternate peripheral roles before assigning PCB nets. Reserve programming access and pull the relevant pins to safe states during reset and power transitions. Keep switching or high-energy interlock paths away from sensitive measurement and communication traces, and use the manufacturer grounding and decoupling recommendations as the basis for the final board layout.
Informations de conformité
The distributor description identifies the R5F211B1SP#W4 as Pb-free. RoHS, REACH, halogen-free, and conflict-minerals status were not confirmed.
