R5F211B4SP#U0 - 16-Bit R8C/1B MCU, 20MHz, 16KB Flash | Renesas
MPN: R5F211B4SP#U0 ✓ AktifR5F211B4SP#U0 Ringkasan
A microcontroller (MCU) is a single integrated circuit that merges a CPU core, program and data memory, peripheral timers, serial interfaces, analog conversion and general-purpose I/O onto one die. The MCU sits in the hierarchy below embedded processor, below microprocessor, below semiconductor; within that family the R8C/Tiny line is Renesas' compact 16-bit entry-level core, delivering roughly three times the code density of an 8-bit architecture while remaining simple enough for cost-sensitive, low-power embedded control. The R8C/1B Group is the small-footprint member of that family.
Key features of this device include a 16-bit word-length CPU core with a 1 MB address space, 13 general-purpose I/O pins, a 4-channel 10-bit A/D converter for analog sensor and potentiometer inputs, internal oscillator operation with no external crystal requirement, and a Pb-Free 20-LSSOP package that measures only 0.173 inch (4.40 mm) in width. Supply operation at both 3 V and 5 V allows the same board design to serve low-voltage battery products and legacy 5 V industrial control panels.
Technically the part is a single-chip microcomputer rather than a mask-programmed fixed-function controller, so application firmware lives in serial-programmable FLASH and can be updated over the serial programming interface. The 20-LSSOP footprint keeps boards compact while exposing the full set of timer, serial, ADC and interrupt resources through 13 I/O pins, and the low 3 V operating point supports energy-conscious battery-powered peripherals.
Typical applications include industrial control and sensor-interface modules, appliance and HVAC control panels, low-cost consumer peripherals, small motor and stepper drive controllers, simple data loggers, and legacy industrial equipment that must be serviced with a modern low-power MCU while retaining a familiar software model.
A key design consideration is that the R8C/1B Group is a non-promotion family: Renesas states that the R8C/1B Group is supported only for customers who have already adopted these products, and that the RL78/G12 Group is recommended for new designs. Existing R8C platforms can therefore be maintained and cloned with confidence, but new greenfield projects should evaluate the recommended successor family.
This page consolidates distributor pricing, a drop-in replacement analysis within the R8C/1B Group, comparison tables and practical design notes that are not assembled in one place in the manufacturer datasheet, giving engineers a single reference for maintaining or extending an existing R8C design.
Pilihan pengganti yang segera untuk R5F211B4SP#U0 — sama paket, pin-pin kompatibel. Bahagian paket yang berbeza memerlukan kerja ulang PCB diasingkan.
R5F211B4DSP
✅ Masuk Drop-In📋 Alternatif rujukan (tidak dalam katalog)
R5F211B4XXXSP
✅ Masuk Drop-In📋 Alternatif rujukan (tidak dalam katalog)
R5F211B4DXXXSP
✅ Masuk Drop-In📋 Alternatif rujukan (tidak dalam katalog)
R5F211B3SP
✅ Masuk Drop-In📋 Alternatif rujukan (tidak dalam katalog)
R5F211B2SP
✅ Masuk Drop-In📋 Alternatif rujukan (tidak dalam katalog)
R5F211B4NP
✅ Masuk Drop-In📋 Alternatif rujukan (tidak dalam katalog)
R5F211B4SP#U0 Penilaian maksimum & Ciri-ciri Elektrik
| Product Type | 16-bit single-chip microcomputer (MCU) |
| Core Processor | R8C / R8C/Tiny Series CPU core |
| Word Size | 16-bit |
| Frekuensi Klock Maksimum | 20 MHz |
| Program Memory Size | 16 KB (16K x 8) FLASH |
| RAM Size | 1 KB (1K x 8) |
| Number of I/O | 13 |
| ADC | 4-channel 10-bit A/D converter |
| Tegangan Pemberi Arus | 3 V / 5 V |
| Address Space | 1 MB |
| Oscillator Type | Internal |
| Process Technology | High-performance silicon gate CMOS |
| Gambaran Suhu Operasi | -20 °C to +85 °C (TA) |
| Kemasan / Case | 20-LSSOP (0.173 in, 4.40 mm width) |
| Jenis Pemasangan | Surface Mount |
| Packaging | Tube |
| Lead-Free Status | Pb-Free |
| Status Lingkungan Hidup | Active (Non Promotion) |
| Product Category | 16-bit Microcontrollers with R8C CPU Core (Non Promotion) |
Panduan Konfigurasi Pin R5F211B4SP#U0 20-lssop (0.173 in, 4.40 mm width)
Konfigurasi pin untuk R5F211B4SP#U0 (20-lssop (0.173 in, 4.40 mm width) pakai). IC digital ini termasuk GPIO, antaramuka komunikasi (UART, SPI, I2C), dan pin kuasa. Rujuk dokumen pengeluar untuk fungsi pin alternatif dan opsi konfigurasi. Biasa digunakan dalam rancangan sistem ter嵌入式 dan PCB.
Tiada data garisan pin yang diperoleh untuk R5F211B4SP#U0.
Rujuk kepada lembaran data untuk konfigurasi pin penuh.
Aplikasi Biasa
R5F211B4SP#U0 patut untuk 6 aplikasis: Industrial Sensor and Signal Conditioning Module, Appliance and HVAC Control Panel, Low-Power Battery-Powered Peripheral, Small Motor and Stepper Drive Controller, Simple Data Logger and Standalone Recorder, Legacy Industrial Equipment Maintenance.
Industrial Sensor and Signal Conditioning Module
The R5F211B4SP#U0 suits compact sensor-hub boards that must digitize several analog channels locally and expose results over a serial link. Its integrated 4-channel 10-bit A/D converter removes the need for an external ADC, while the 16-bit R8C/Tiny core at up to 20 MHz provides enough throughput for filtering, linearization and linear-scale conversion of thermistor, strain and pressure-divider signals. The 13 available I/O pins are enough for a 4-bit SPI or UART link plus discrete alert lines, and the 20-LSSOP footprint keeps the module compact. Because supply operation spans 3 V to 5 V, the same board family can cover both 24 V bus-powered transmitters and battery-powered field sensors, provided the internal oscillator accuracy is acceptable for the measurement in question.
Disebarkan
Appliance and HVAC Control Panel
Home appliance controllers and HVAC user-interface panels typically need a mix of digital outputs for relays and indicators plus a small number of analog inputs for temperature, fan-speed and potentiometer feedback. The R5F211B4SP#U0 addresses this with 13 I/O pins, a 4-channel 10-bit A/D converter for the analog controls and a 16-bit core that handles state machines, debouncing and timing without an external real-time clock. The 20-LSSOP package fits the small panel form factors typical of appliances, and the 3 V / 5 V supply flexibility allows the same silicon to be used in 5 V legacy panels and 3.3 V modern boards. Firmware can be refreshed through the serial programming interface, which simplifies field updates on installed units.
Disebarkan
Low-Power Battery-Powered Peripheral
Battery-operated IoT peripherals and portable accessories benefit from a controller that runs from a 3 V rail and can be clocked without external crystals. The R5F211B4SP#U0 operates at 3 V / 5 V with an internal oscillator, so a design can be powered directly from a single CR2032 or Li-ion cell without a crystal plus load capacitors. Its 16 KB of FLASH holds a compact protocol stack and application logic, and the 1 KB of RAM supports buffering for sensor bursts. The 20-LSSOP package, with a 4.40 mm body width, is small enough for wearables and door-lock accessories. Note that the -20 °C to +85 °C ambient rating is adequate for indoor and consumer environments but should be re-checked for outdoor or cold-chain products.
Disebarkan
Small Motor and Stepper Drive Controller
Compact motor-control boards in printers, fans and small actuators need precise timing and a modest amount of logic, but rarely need a 32-bit processor. The R8C/Tiny core in the R5F211B4SP#U0 executes at up to 20 MHz with a 16-bit word length, giving headroom for timer-based step generation, direction control and hall-sensor decoding, while the 13 I/O pins cover step, direction, enable and limit inputs. The 4-channel 10-bit A/D converter supports current sensing and potentiometer-based speed setting. Its 20-LSSOP package fits compact motor-control modules, and the 3 V / 5 V supply range covers both 3.3 V logic and 5 V driver interfaces.
Disebarkan
Simple Data Logger and Standalone Recorder
Standalone recorders for temperature, humidity, vibration or event logging need sequential program memory, an RTC-style timebase and a way to retrieve data later, and the R5F211B4SP#U0 covers the control portion of that job economically. Its 16 KB of FLASH stores firmware plus configuration and calibration tables, the 4-channel 10-bit A/D converter samples the analogue inputs, and the 13 I/O pins handle a real-time clock, memory-card or USB-serial link and status indicators. Because the internal oscillator is used, designers who need long-term accuracy should time-stamp against an external RTC. The 20-LSSOP footprint and tube packaging support volume manufacture of compact recorder boards.
Disebarkan
Legacy Industrial Equipment Maintenance
For factories and service shops sustaining older R8C-based equipment, the R5F211B4SP#U0 is a pragmatic repair and redesign part because the 20-LSSOP footprint, R8C/Tiny toolchain and register map match the installed platform. The same part family includes the R5F211B4DSP, R5F211B4XXXSP and R5F211B4DXXXSP in the identical package, so a failed board can be reworked without changing the land pattern or firmware, and lower-density siblings such as the R5F211B3SP can be used where code size permits. The device is Active at authorized distributors as of 2026-10-29, which supports planned sustaining rather than emergency-only supply.
Disebarkan
Ringkasan Produk Disebarkan
Data referensi kejuruteraan untuk R5F211B4SP#U0 — perbandingan, panduan rancangan, dan maklumat kesediaan
Panduan Pilihan
Perbandingan dengan Gantian
| Parametr | Produk Ini | R5F211B4DSP | R5F211B4XXXSP | R5F211B4DXXXSP | R5F211B3SP | R5F211B2SP |
|---|---|---|---|---|---|---|
| Package | 20-LSSOP (0.173 in, 4.40 mm width) | 20-LSSOP - same | 20-LSSOP - same | 20-LSSOP - same | 20-LSSOP - same | 20-LSSOP - same |
| Brand | Renesas Electronics | Renesas Electronics | Renesas Electronics | Renesas Electronics | Renesas Electronics | Renesas Electronics |
| CPU Core | R8C / R8C/Tiny Series, 16-bit | R8C / R8C/Tiny Series, 16-bit | R8C / R8C/Tiny Series, 16-bit | R8C / R8C/Tiny Series, 16-bit | R8C / R8C/Tiny Series, 16-bit | R8C / R8C/Tiny Series, 16-bit |
| Maximum Clock Frequency | 20 MHz | 20 MHz | 20 MHz | 20 MHz | 20 MHz | 20 MHz |
| Supply Voltage | 3 V / 5 V | 3 V / 5 V | 3 V / 5 V | 3 V / 5 V | 3 V / 5 V | 3 V / 5 V |
Penyeberangsung Jelas
- 16-bit R8C/Tiny core in a compact 20-LSSOP with 4-channel 10-bit ADC integrated (vsATMEGA328P-MNR)
- Multiple same-footprint drop-in options from the same R8C/1B Group (vsR5F211B4DSP)
- Single silicon platform covers 3 V and 5 V industrial and consumer rails (vsSTM32F072RBT7TR)
- Lower-memory siblings allow cost-down without PCB changes (vsR5F211B2SP)
Catatan Desain
The single most common sourcing mistake with this device is treating it as an active new-design platform. Renesas states that the R8C/1B Group is supported only for customers who have already adopted these products and that the RL78/G12 Group is recommended for new designs. Before committing a new board, confirm the business case: if the project is a clone of an existing R8C platform, the R5F211B4SP#U0 in its 20-LSSOP package is ideal; if it is greenfield, evaluate the recommended RL78/G12 family or an equivalent low-cost MCU with a longer availability horizon.
The R5F211B4SP#U0 runs from a 3 V or 5 V rail, so supply decoupling and pin grouping must match the datasheet's power/AVDD assignment. Provide a 0.1 uF ceramic capacitor at each supply pin placed directly at the pin, plus a bulk electrolytic or ceramic reservoir near the device to absorb switching transients from the load. Keep the analog reference path clean and separate from digital return currents; with only a 10-bit, 4-channel ADC available, reference and ground noise translate directly into measurement error, so star-point grounding and short, wide traces matter more here than on an 8-bit design.
Follow the manufacturer land pattern for the 20-pin LSSOP exactly (0.65 mm pitch, 4.40 mm body width) so that drop-in members of the R8C/1B Group - R5F211B4DSP, R5F211B4XXXSP, R5F211B4DXXXSP and lower-density siblings - all fit the same footprint. Because the device uses an internal oscillator, do not reserve crystal pads unless your design adds one; instead allow footprint option for an external clock or a real-time crystal if timing accuracy matters. Route A/D inputs away from switching nodes, keep the ADC input traces short, and add test points on the serial programming interface to simplify board-level programming and rework.
Maklumat Kesediaan
Mouser lists the R5F211B4SP#U0 as Pb-Free (20-SS, 16K). RoHS, REACH, halogen-free and conflict-minerals statements were not present in the retrieved sources and are therefore reported as unknown. AEC-Q100 is not applicable to this industrial/commercial-grade 16-bit MCU.
