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Renesas R5F211B3SP#U0
- Part No.:
- R5F211B3SP#U0
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 20-LSSOP (0.173", 4.40mm Width)
- Datasheet:
-
R5F211B3SP#U0.pdf
- Description:
- IC MCU 16BIT 12KB FLASH 20LSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,774
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Product details
Overview
R5F211B3SP#U0 from Renesas Electronics is a 16-bit single-chip microcontroller in the R8C/1B Group, featuring an R8C/Tiny Series CPU core, 12 KB program flash ROM, 1 KB × 2 data flash memory, 768 bytes RAM, and operating at up to 20 MHz (50 ns min. instruction time). It integrates 10-bit A/D conversion (4 channels), three timers (8-bit ×2, 16-bit ×1), UART, I²C bus interface, and LED drive capability. It targets cost-sensitive embedded control in consumer appliances and industrial sensors.
For engineers reviewing the R5F211B3SP#U0 datasheet, R5F211B3SP#U0 pinout, R5F211B3SP#U0 application, or R5F211B3SP#U0 equivalent, key selection considerations include its 20-pin LSSOP package (PLSP0020JB-A), -20°C to +85°C ambient rating, on-chip voltage detection and power-on reset, and dual on-chip oscillators with frequency adjustment.
Technical Context
The R5F211B3SP#U0 implements the R8C/Tiny Series 16-bit CPU core with 89 fundamental instructions and 1 Mbyte address space. Its memory subsystem includes 12 KB of reprogrammable flash ROM and two independent 1 KB data flash blocks-enabling nonvolatile parameter storage with 10,000 erase/write cycles-alongside 768 bytes of SRAM.
Peripheral integration centers on mixed-signal control: a 10-bit A/D converter with four analog inputs (AN8–AN11), three timer modules (Timer X/Z for basic timing, Timer C for input capture/output compare), and dual serial interfaces-one supporting UART or clock-synchronous I/O, the other dedicated to I²C bus communication-plus integrated LED drive ports on P1_0–P1_3.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | R8C/Tiny Series 16-bit, 89 instructions, 50 ns min. execution time @ 20 MHz |
| Memory | 12 KB flash ROM + 2×1 KB data flash + 768 B RAM - enables firmware updates and field-configurable calibration storage |
| A/D Converter | 10-bit resolution, 4-channel input (AN8–AN11) - supports sensor signal digitization without external ADC |
| Timers | Timer X/Z (8-bit ×2), Timer C (16-bit with input capture/output compare) - provides PWM generation and event timing |
| Serial Interfaces | UART + clock-synchronous I/O + I²C bus - enables host MCU communication and sensor/EEPROM interfacing |
| Supply & Temp | VCC = 2.7–5.5 V; operating ambient: -20°C to +85°C - suitable for unregulated battery or industrial DC rails |
| Package | 20-pin LSSOP (PLSP0020JB-A), 0.65 mm pitch - compact surface-mount footprint for space-constrained PCBs |
Pinout & Package
Package: 20-pin molded-plastic LSSOP (PLSP0020JB-A), 7.6 mm × 4.4 mm body, 0.65 mm lead pitch.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| P1_0 / KI0 / AN8 / CMP0_0 | I/O port / key interrupt / analog input / comparator output | Configurable as LED driver, wake-up input, or sensor input; supports analog sensing and low-power key scan |
| P1_4 / TXD0 | UART transmit output | Drives RS-232 level shifter or direct logic-level serial link; supports bootloader and debug output |
| P1_5 / RXD0 / CNTR01 / INT11 | UART receive input / timer input / interrupt source | Accepts serial commands while simultaneously enabling external event counting or edge-triggered wake-up |
| P3_4 / SCS / SDA / CMP1_1 | I²C data bidirectional / chip select / comparator output | Shares pin for I²C slave communication and peripheral enable control - reduces external logic count |
| XIN / P4_6 | Main clock oscillator input | Accepts 1–20 MHz crystal or ceramic resonator; enables precise timing for UART baud rate and A/D sampling |
| RESET | Active-low reset input | Asynchronous hardware reset with internal pull-up; compatible with RC-based power-on reset circuits |
Key Features
| Feature | Design Value |
|---|---|
| On-chip data flash (2 × 1 KB) | Enables field-updatable calibration tables and device configuration without external EEPROM |
| Integrated LED drive ports (P1_0–P1_3) | Direct current-sinking drive (max 20 mA per pin) eliminates discrete transistor drivers for status indicators |
| Dual on-chip oscillators | High-speed (adjustable 1–20 MHz) and low-speed (125 kHz) oscillators support fast wake-up and ultra-low-power stop mode |
| 10-bit A/D converter with 4 inputs | Supports direct connection of thermistors, potentiometers, or voltage-sense resistors without signal conditioning |
| Hardware I²C bus interface | Full-duplex, master/slave-capable interface compliant with Philips I²C specification - simplifies sensor and memory integration |
Applications
| Home Appliance Control | Industrial Sensor Node |
|---|---|
|
Use Scenario: Microcontroller in washing machine main board managing motor control, water level sensing, and user interface. IC Role / Device Role / Timing Role: Central control unit executing real-time motor sequencing, reading analog pressure sensor outputs via A/D, and driving LED display segments. Use Value: Integrated data flash stores wash cycle parameters and fault logs; LED drive pins directly illuminate status LEDs without external drivers. |
Use Scenario: Standalone temperature/humidity sensor node transmitting readings over UART to gateway. IC Role / Device Role / Timing Role: Sensor interface MCU acquiring analog signals from thermistor/hygrometer, performing linearization, and formatting data packets. Use Value: On-chip 10-bit A/D and I²C interface allow direct connection to digital humidity sensors; low-power stop mode extends battery life. |
| Office Equipment Panel | Portable Medical Device |
|
Use Scenario: Keypad and display controller in multifunction printer control panel. IC Role / Device Role / Timing Role: Key interrupt handler scanning P1_0–P1_3 for button presses, updating LCD via SPI-compatible clock-synchronous I/O. Use Value: Key input interrupts (KI0–KI3) enable immediate wake-from-wait response; integrated UART supports firmware updates via PC. |
Use Scenario: Battery-powered pulse oximeter front-end processing analog photodiode signals. IC Role / Device Role / Timing Role: Signal acquisition MCU digitizing dual-wavelength analog inputs, applying gain correction, and buffering results in RAM. Use Value: 12 KB flash accommodates signal-processing algorithms and calibration routines; 768 B RAM holds intermediate sample buffers. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R5F211B2SP#U0 | 8 KB program flash, 512 B RAM, same peripherals and package | Suitable for simpler control tasks with smaller code footprint and less data buffering | Select when firmware size < 8 KB and RAM usage < 512 B - reduces cost without sacrificing peripheral compatibility |
| R5F211B4SP#U0 | 16 KB program flash, 1 KB RAM, same peripherals and package | Required for larger firmware images, complex state machines, or extended data logging | Choose when application demands >12 KB code space or >768 B runtime data storage - maintains identical pinout and timing |
Compared with R5F211B2SP#U0 and R5F211B4SP#U0, the R5F211B3SP#U0 offers optimal balance of code capacity (12 KB), data retention (2×1 KB data flash), and RAM (768 B) for mid-complexity embedded systems - avoiding over-provisioning while ensuring headroom for feature updates.
Availability
R5F211B3SP#U0 is available at Aetrix Electronics and suitable for home appliance control, industrial sensor nodes, office equipment panels, and portable medical devices requiring stable component supply across multi-year production cycles.
Supply support for R5F211B3SP#U0 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Renesas Electronics Corporation is a global semiconductor leader specializing in microcontrollers, analog, and power solutions for automotive, industrial, and IoT applications.
The R5F211B3SP#U0 belongs to the R8C/1B Group - a family of cost-optimized 16-bit MCUs designed for high-volume, resource-constrained embedded control in consumer and industrial equipment.
FAQ
What is the maximum operating frequency and corresponding supply voltage range for the R5F211B3SP#U0?
The R5F211B3SP#U0 operates at up to 20 MHz with a minimum instruction execution time of 50 ns when supplied at VCC = 3.0–5.5 V. At lower frequencies (e.g., 10 MHz), it supports VCC down to 2.7 V, enabling flexible power rail design across battery and line-powered applications.
Does the R5F211B3SP#U0 include on-chip debug support?
Yes, the R5F211B3SP#U0 supports on-chip debugging via the single-wire debug interface using the RESET pin. This allows full breakpoint, step-through, and register inspection capability without requiring additional debug pins - simplifying PCB layout and reducing BOM count.
How many analog input channels does the R5F211B3SP#U0 A/D converter support, and what is its resolution?
The R5F211B3SP#U0 integrates a single 10-bit successive-approximation A/D converter with four analog input channels (AN8–AN11), all mapped to P1 pins. It supports programmable conversion start triggers and result alignment, enabling precise sensor signal acquisition without external components.
What is the endurance rating of the data flash memory in the R5F211B3SP#U0?
The R5F211B3SP#U0 features two independent 1 KB data flash blocks rated for 10,000 erase/write cycles each. This endurance supports frequent field updates of calibration coefficients, device configuration, or usage logs in long-lifecycle products.
Which package type is used by the R5F211B3SP#U0, and what are its key mechanical dimensions?
The R5F211B3SP#U0 uses the PLSP0020JB-A 20-pin LSSOP package: 7.6 mm × 4.4 mm body size, 0.65 mm lead pitch, and 1.2 mm max height. Its gull-wing leads ensure reliable reflow soldering and compatibility with standard automated assembly processes.
R5F211B3SP#U0 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- 20-LSSOP (0.173", 4.40mm Width)
- Series:
- R8C/1x/1B
- Packaging:
- Tube
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Core Processor:
- R8C
- Core Size:
- 16-Bit
- Speed:
- 20MHz
- Connectivity:
- I2C, SIO, SSU, UART/USART
- Peripherals:
- LED, POR, Voltage Detect, WDT
- Number of I/O:
- 13
- Program Memory Size:
- 12KB (12K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 768 x 8
- Voltage - Supply (Vcc/Vdd):
- 2.7V ~ 5.5V
- Data Converters:
- A/D 4x10b
- Oscillator Type:
- Internal
- Operating Temperature:
- -20°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
R5F211B3SP#U0 FAQ
1.How can I place an order for R5F211B3SP#U0 through Aetrix?
Please submit a Request for Quotation (RFQ) for R5F211B3SP#U0 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for R5F211B3SP#U0 reliable?
The price and inventory of R5F211B3SP#U0 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R5F211B3SP#U0 is usually 5 days.
3.What payment methods are accepted for R5F211B3SP#U0?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R5F211B3SP#U0 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R5F211B3SP#U0?
R5F211B3SP#U0 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R5F211B3SP#U0 order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for R5F211B3SP#U0?
For technical support, including R5F211B3SP#U0 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R5F211B3SP#U0 requirements.
6.How does Aetrix verify that R5F211B3SP#U0 is sourced from the original manufacturer or authorized distributors?
All R5F211B3SP#U0 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that R5F211B3SP#U0 meets industry standards.
7.What is the process for return or replacement of R5F211B3SP#U0?
All R5F211B3SP#U0 units undergo pre-shipment inspection (PSI). If there is an issue with R5F211B3SP#U0, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The R5F211B3SP#U0 part is unused and in its original packaging.
Return procedure for R5F211B3SP#U0:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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