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Renesas R5F211B4DSP#W4
- Part No.:
- R5F211B4DSP#W4
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 20-LSSOP (0.173", 4.40mm Width)
- Datasheet:
-
R5F211B4DSP#W4.pdf
- Description:
- IC MCU 16BIT 16KB FLASH 20LSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,586
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Product details
Overview
R5F211B4DSP#W4 from Renesas Electronics is a 16-bit single-chip microcontroller in the R8C/1B Group, featuring an R8C/Tiny Series CPU core, 16 KB flash program ROM, dual 1 KB data flash blocks, 1 KB RAM, and operation at up to 20 MHz (50 ns min instruction time). It integrates a 10-bit 4-channel ADC, three timers (8-bit ×2, 16-bit ×1), UART, clock-synchronous serial I/O, I²C bus interface, and LED drive ports. It targets compact embedded control in consumer appliances and industrial sensors.
For engineers reviewing the R5F211B4DSP#W4 datasheet, R5F211B4DSP#W4 pinout, R5F211B4DSP#W4 application, or R5F211B4DSP#W4 equivalent, key selection criteria include its -40°C to +85°C operating range (D version), LSSOP-20 package (PLSP0020JB-A), on-chip voltage detection and power-on reset, and dual-block data flash for reliable parameter storage in field-upgradable devices.
Technical Context
This MCU implements the R8C/Tiny Series CPU with 89 fundamental instructions and a 1 Mbyte linear address space. Its memory subsystem includes 16 KB of flash program ROM and two independent 1 KB data flash blocks-each rated for 10,000 erase/write cycles-enabling robust nonvolatile data logging and configuration retention.
The peripheral set supports 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 UART plus one configurable channel supporting clock-synchronous serial I/O, SSU, or I²C bus protocol.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | R8C/Tiny Series 16-bit CPU with 89 instructions and 50 ns min execution time at 20 MHz |
| Memory | 16 KB flash program ROM + 2 × 1 KB data flash blocks + 1 KB RAM |
| Operating Voltage | 2.7–5.5 V supply range supports wide-input industrial and battery-powered designs |
| A/D Converter | 10-bit resolution, 4-channel input (AN8–AN11), internal reference via VREF pin |
| Timers | Timer X/Z (8-bit ×2, each with 8-bit prescaler); Timer C (16-bit, input capture/output compare) |
| Serial Interfaces | 1 UART + 1 multi-function channel supporting clock-synchronous serial I/O, SSU, or I²C bus |
| Package & Temp | LSSOP-20 (PLSP0020JB-A), -40°C to +85°C ambient operating range (D grade) |
Pinout & Package
Package: 20-pin molded-plastic LSSOP (PLSP0020JB-A), 0.65 mm pitch, 7.6 mm × 4.4 mm body size, lead-free and RoHS compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| P1_0 / KI0 / AN8 / CMP0_0 | I/O port / key interrupt / A/D input / comparator output | Configurable CMOS I/O with pull-up control; supports wake-up from stop mode via key press or analog threshold crossing |
| P1_4 / TXD0 | UART transmit output | Drives RS-232 level-shifted or TTL-level serial debug/communication links |
| P1_5 / RXD0 / CNTR01 / INT11 | UART receive input / timer input / external interrupt | Accepts asynchronous serial data; also captures external event edges for timing or counter functions |
| P3_4 / SCS / SDA / CMP1_1 | Chip select / I²C data / comparator output | Enables multi-device I²C bus arbitration; doubles as general-purpose open-drain I/O for sensor interfacing |
| XIN / P4_6 | Main clock oscillator input | Accepts ceramic resonator (3–20 MHz) or crystal; enables precise timing for UART baud generation and real-time control |
| RESET | Active-low reset input | Hardware-initiated system reset; debounced externally to prevent spurious restarts in noisy environments |
Key Features
| Feature | Design Value |
|---|---|
| Dual 1 KB data flash blocks | Enables independent firmware parameter storage and field updates without erasing application code |
| 10-bit 4-channel A/D converter | Supports direct sensing of temperature, voltage, or potentiometer signals with internal reference option |
| LED drive ports (P1_0–P1_3) | Source/sink up to 20 mA per pin for direct LED control without external drivers in UI applications |
| On-chip voltage detection & POR | Eliminates need for external reset IC; ensures safe initialization across supply ramp-up and brownout conditions |
| Low-power stop mode (0.7 µA) | Extends battery life in portable equipment by halting CPU and peripherals while retaining RAM and register state |
Applications
| Home Appliance Control | Industrial Sensor Node |
|---|---|
|
Use Scenario: Microcontroller in washing machine main control board managing motor drive sequencing, water level sensing, and user interface. IC Role / Device Role / Timing Role: Central system controller executing real-time motor commutation logic, reading analog pressure/temperature sensors, and driving LED indicators. Use Value: Integrated 10-bit ADC and LED drive ports reduce BOM count; dual data flash allows safe storage of calibration offsets and usage logs across power cycles. |
Use Scenario: Standalone environmental monitor deployed in factory HVAC ducts measuring temperature and humidity. IC Role / Device Role / Timing Role: Data acquisition engine sampling sensors via ADC, processing readings, and transmitting via UART to gateway. Use Value: Low-power stop mode (0.7 µA) enables multi-year operation on coin-cell batteries; I²C interface simplifies connection to digital sensors. |
| Office Equipment UI | Portable Medical Device |
|
Use Scenario: Keypad and display controller in multifunction printer control panel handling button presses and status LED feedback. IC Role / Device Role / Timing Role: Dedicated UI processor managing key scan interrupts (KI0–KI3), LED drive outputs, and UART communication with main SoC. Use Value: Hardware key interrupt capability reduces CPU polling overhead; built-in LED drive ports eliminate discrete transistor drivers. |
Use Scenario: Battery-powered blood glucose meter performing analog signal conditioning and result display. IC Role / Device Role / Timing Role: Signal acquisition controller digitizing electrochemical sensor output and managing LCD contrast via PWM-capable timer outputs. Use Value: On-chip voltage detection ensures accurate ADC reference during battery discharge; 16 KB flash accommodates firmware + safety-critical self-test routines. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 16-bit microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R5F211B4DD | Same core, memory, and peripherals; packaged in 20-pin SDIP (PRDP0020BA-A) instead of LSSOP | Better suited for through-hole prototyping or high-vibration environments requiring mechanical robustness | Select R5F211B4DD when board assembly uses wave soldering or requires larger thermal mass for heat dissipation |
| R5F211B4NP | Same specifications but in 28-pin HWQFN (PWQN0028KA-B) with additional I/O pins and no LED drive function on P1 | Enables expanded peripheral connectivity (e.g., extra UART, SPI) in space-constrained PCB layouts | Choose R5F211B4NP when design requires >13 GPIOs or needs finer pitch for miniaturized industrial modules |
Compared with R5F211B4DSP#W4, R5F211B4DD offers through-hole reliability at the cost of larger footprint, while R5F211B4NP trades LED drive capability for higher I/O density and smaller package-both retain identical flash/RAM, ADC, and timer functionality for seamless firmware reuse.
Availability
R5F211B4DSP#W4 is available at Aetrix Electronics and suitable for home appliance control, industrial sensor nodes, office equipment UI, and portable medical devices requiring stable component supply across long production lifecycles.
Supply support for R5F211B4DSP#W4 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, power, and SoC solutions for automotive, industrial, and IoT markets.
The R8C/1B Group, including R5F211B4DSP#W4, was designed for cost-sensitive, low-power embedded control in consumer and industrial equipment-emphasizing integration, flash endurance, and ease of migration within the R8C family.
FAQ
What is the maximum operating frequency and corresponding supply voltage range for R5F211B4DSP#W4?
R5F211B4DSP#W4 operates at up to 20 MHz with a supply voltage of 3.0–5.5 V. At lower frequencies (e.g., 10 MHz), it supports a wider 2.7–5.5 V range, enabling flexible power design for battery-backed or wide-input industrial systems. The minimum instruction execution time is 50 ns under 20 MHz/5.0 V conditions.
Does R5F211B4DSP#W4 include on-chip reset and voltage monitoring functions?
Yes, R5F211B4DSP#W4 integrates both a power-on reset (POR) circuit and an on-chip voltage detection (VDD monitor) circuit. These features ensure reliable initialization and brownout protection without requiring external reset ICs, reducing system component count and improving startup predictability.
How many A/D converter channels does R5F211B4DSP#W4 support, and what is their resolution?
R5F211B4DSP#W4 includes a single 10-bit successive-approximation A/D converter with four analog input channels (AN8–AN11). It supports internal reference selection via the VREF pin and operates across the full 2.7–5.5 V supply range, delivering consistent accuracy for sensor signal acquisition.
What packaging and lead finish does R5F211B4DSP#W4 use?
R5F211B4DSP#W4 is supplied in a 20-pin molded-plastic LSSOP package (PLSP0020JB-A) with 0.65 mm pitch. It features lead-free (Pb-free) terminations and complies with RoHS Directive 2011/65/EU, meeting environmental requirements for commercial and industrial electronics manufacturing.
Is R5F211B4DSP#W4 pin-compatible with other members of the R8C/1B Group?
Yes, R5F211B4DSP#W4 shares identical pinout and electrical characteristics with all other R8C/1B Group variants in the PLSP0020JB-A (LSSOP-20) package-including R5F211B1SP, R5F211B2DSP, and R5F211B3NP-enabling hardware reuse across memory and temperature grade variants without PCB redesign.
R5F211B4DSP#W4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- 20-LSSOP (0.173", 4.40mm Width)
- Series:
- R8C/1x/1B
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Programmable:
- 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:
- 16KB (16K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 1K x 8
- Voltage - Supply (Vcc/Vdd):
- 2.7V ~ 5.5V
- Data Converters:
- A/D 4x10b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
R5F211B4DSP#W4 FAQ
1.How can I place an order for R5F211B4DSP#W4 through Aetrix?
Please submit a Request for Quotation (RFQ) for R5F211B4DSP#W4 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 R5F211B4DSP#W4 reliable?
The price and inventory of R5F211B4DSP#W4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R5F211B4DSP#W4 is usually 5 days.
3.What payment methods are accepted for R5F211B4DSP#W4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R5F211B4DSP#W4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R5F211B4DSP#W4?
R5F211B4DSP#W4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R5F211B4DSP#W4 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 R5F211B4DSP#W4?
For technical support, including R5F211B4DSP#W4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R5F211B4DSP#W4 requirements.
6.How does Aetrix verify that R5F211B4DSP#W4 is sourced from the original manufacturer or authorized distributors?
All R5F211B4DSP#W4 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 R5F211B4DSP#W4 meets industry standards.
7.What is the process for return or replacement of R5F211B4DSP#W4?
All R5F211B4DSP#W4 units undergo pre-shipment inspection (PSI). If there is an issue with R5F211B4DSP#W4, 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 R5F211B4DSP#W4 part is unused and in its original packaging.
Return procedure for R5F211B4DSP#W4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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