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Renesas R5F211B2SP#W4
- Part No.:
- R5F211B2SP#W4
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 20-LSSOP (0.173", 4.40mm Width)
- Datasheet:
-
R5F211B2SP#W4.pdf
- Description:
- IC MCU 16BIT 8KB FLASH 20LSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,035
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Product details
Overview
R5F211B2SP#W4 from Renesas Electronics is a 16-bit single-chip microcontroller in the R8C/1B Group, featuring an R8C/Tiny Series CPU core, 8 KB flash program ROM, 1 KB × 2 data flash memory, 512 bytes RAM, and operation at up to 20 MHz (50 ns min instruction time). It integrates 10-bit A/D conversion (4 channels), UART, I²C bus interface, SSU, three timers (8-bit ×2, 16-bit ×1), and 13 I/O ports - deployed in consumer appliances, sensor-based housing systems, and portable industrial equipment.
For engineers reviewing the R5F211B2SP#W4 datasheet, R5F211B2SP#W4 pinout, R5F211B2SP#W4 application, or R5F211B2SP#W4 equivalent, key selection considerations include its LSSOP-20 package, -20°C to +85°C ambient rating, on-chip voltage detection and power-on reset, and dual on-chip oscillators with frequency adjustment capability.
Technical Context
The R5F211B2SP#W4 implements the R8C/Tiny Series CPU core with 89 fundamental instructions and a 1 Mbyte unified address space. Its memory subsystem includes 8 KB of reprogrammable flash program ROM and two independent 1 KB data flash blocks rated for 10,000 erase/write cycles - enabling reliable nonvolatile parameter storage without external EEPROM.
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 UART plus clock-synchronous I/O supporting both I²C bus and SSU protocols - all managed via shared pins with configurable alternate functions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | R8C/Tiny Series 16-bit core with 89 instructions; enables compact, deterministic firmware for resource-constrained embedded control. |
| Flash Memory | 8 KB program ROM + 1 KB × 2 data flash; supports field firmware updates and persistent configuration storage with 10,000-cycle endurance. |
| RAM | 512 bytes; sufficient for real-time sensor processing, interrupt stacks, and small control buffers in low-power applications. |
| A/D Converter | 10-bit resolution, 4-channel input (AN8–AN11); provides calibrated analog sensing for temperature, voltage, or potentiometer monitoring. |
| Timers | Timer X/Z (8-bit ×2, with 8-bit prescaler) + Timer C (16-bit, input capture/output compare); supports PWM generation, pulse-width measurement, and precise event timing. |
| Serial Interfaces | 1× UART + 1× clock-synchronous I/O supporting I²C bus or SSU; enables communication with sensors, displays, and host controllers using standard protocols. |
| Supply Voltage | 2.7 V to 5.5 V; allows direct operation from common 3.3 V or 5 V rails without level-shifting or external regulators. |
| Operating Temperature | -20°C to +85°C; qualified for indoor consumer, office, and general industrial environments per Renesas Standard grade. |
Pinout & Package
Package: 20-pin molded-plastic LSSOP (PLSP0020JB-A), 0.65 mm pitch, surface-mount, RoHS-compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (P3_5) | I/O port / SCL / SSCK / CMP1_2 | Multi-function pin: I²C clock, SSU clock, or comparator output - requires software configuration and external pull-ups for I²C. |
| 2 (P3_7) | I/O port / TXD1 / SSO / CNTR0 | Serial data output (UART1), SSU data output, or Timer X counter input - selectable via peripheral enable registers. |
| 3 (RESET) | Active-low reset input | Asynchronous hardware reset; must be held low ≥100 ns to initiate full system reset sequence. |
| 4 (XOUT) | Main clock oscillator output | Drives external crystal/resonator; open when using external clock source applied to XIN. |
| 5 (VSS/AVSS) | Digital/analog ground | Common reference for logic and A/D circuits; requires separate low-impedance connection to minimize noise coupling. |
| 6 (XIN) | Main clock oscillator input | Accepts crystal (1–20 MHz), ceramic resonator, or external clock signal; internal feedback resistor enabled by default. |
| 7 (VCC/AVCC) | Digital/analog supply | Single 2.7–5.5 V rail powers core and A/D; AVCC must be decoupled with 0.1 µF capacitor near pin. |
| 8 (MODE) | Boot mode select | Must be pulled high via resistor to enter normal operation; low during reset forces on-chip ROM boot mode. |
| 9 (P4_5) | I/O port / INT0 / RXD1 | External interrupt 0 input or UART1 receive data; configured as input with optional internal pull-up. |
| 10 (P1_7) | I/O port / INT10 / CNTR00 | Interrupt-capable GPIO or Timer C channel 0 counter input; supports edge-triggered wake-up from low-power modes. |
| 11 (P1_6) | I/O port / CLK0 / SSI01 | Transfer clock output for synchronous serial interface or general-purpose clock output. |
| 12 (P1_5) | I/O port / INT11 / CNTR01 / RXD0 | UART0 receive input or Timer X channel 1 counter input; dual-role pin managed by peripheral enable bits. |
| 13 (P1_4) | I/O port / TXD0 | UART0 transmit output only; driven high/low by UART module; not usable as general-purpose output without disabling UART. |
| 14 (P1_3) | I/O port / KI3 / TZOUT / AN11 | Key interrupt input, Timer Z output, or A/D channel 11 - function selected by peripheral enable and direction register settings. |
| 15 (P1_2) | I/O port / KI2 / CMP0_2 / AN10 | Supports keypad scanning, comparator output, or analog input - requires disabling conflicting peripherals before use. |
| 16 (VREF) | A/D reference voltage input | Accepts external reference (0–VCC) or internal VCC; sets full-scale range for 10-bit A/D conversion accuracy. |
| 17 (P1_1) | I/O port / KI1 / CMP0_1 / AN9 | Configurable for key scan, comparator, or analog sensing - shared functionality demands careful initialization sequence. |
| 18 (P1_0) | I/O port / KI0 / CMP0_0 / AN8 | Primary analog input (AN8) and key interrupt source; default LED drive capability supports direct segment driving. |
| 19 (P3_3) | I/O port / INT3 / TCIN / SSI00 / CMP1_0 | Timer C input capture, synchronous serial data, or comparator output - requires register-controlled function selection. |
| 20 (P3_4) | I/O port / CMP1_1 / SCS / SDA | I²C data line (open-drain), SSU chip select, or comparator output - external pull-up required for I²C/SCS operation. |
Key Features
| Feature | Design Value |
|---|---|
| On-chip data flash (1 KB × 2) | Enables robust field-updatable parameter storage without external nonvolatile memory, reducing BOM count and PCB area. |
| Integrated voltage detection & POR | Eliminates need for external reset IC; ensures reliable startup and brown-out recovery across 2.7–5.5 V supply range. |
| Dual on-chip oscillators | High-speed oscillator (adjustable) + low-speed oscillator provide flexible clock sources for active and low-power modes. |
| LED drive ports (P1_0–P1_3) | Direct CMOS sink/source capability (20 mA typical) allows driving 7-segment displays or status LEDs without external drivers. |
| Low-power stop mode (0.7 µA) | Extends battery life in portable equipment; retains RAM and register states while halting CPU and peripheral clocks. |
| I²C bus interface (SCL/SDA) | Hardware-accelerated master/slave I²C compliant with Philips specification - simplifies communication with sensors and EEPROMs. |
Applications
| Home Appliance Control | Office Equipment Monitoring |
|---|---|
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 PID loops, reading 10-bit A/D values from pressure sensors, and driving LED indicators via P1_0–P1_3. Use Value: Integrated data flash stores calibration offsets and cycle history; UART enables service diagnostics; low-power stop mode reduces standby consumption. |
Use Scenario: Embedded controller in multifunction printer monitoring paper feed, toner level, and thermal head temperature. IC Role / Device Role / Timing Role: Sensor hub interfacing with thermistors (AN8–AN11), generating PWM via Timer C for fan speed control, and communicating via I²C to EEPROM. Use Value: On-chip voltage detection prevents erratic behavior during AC line sags; 20 MHz operation ensures timely response to paper jam interrupts. |
| Housing Security System | Portable Industrial Tester |
Use Scenario: Door/window sensor node in smart home system detecting intrusion via reed switch and reporting via UART to gateway. IC Role / Device Role / Timing Role: Low-power sensor processor sampling magnetic switches on INT0/INT3, waking from stop mode on event, and transmitting status via TXD0/RXD0. Use Value: 0.7 µA stop current extends coin-cell battery life to >2 years; integrated POR eliminates external reset components. |
Use Scenario: Handheld multimeter front-end digitizing analog inputs and displaying results on segmented LCD. IC Role / Device Role / Timing Role: Precision A/D acquisition engine using VREF reference and 10-bit conversion, driving 7-segment display via LED-capable P1 ports. Use Value: Single-supply 2.7–5.5 V operation allows direct use of AA/AAA batteries; data flash stores auto-zero calibration coefficients. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 16-bit microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R5F211B2DD | Same core, memory, and peripherals; packaged in 20-pin SDIP (PRDP0020BA-A) instead of LSSOP. | Through-hole mounting preferred for prototyping or high-vibration environments where solder joint reliability is critical. | Select R5F211B2DD for manual assembly, test fixtures, or legacy through-hole PCBs; identical firmware compatibility. |
| R5F211B2NP | Same specifications but in 28-pin HWQFN (PWQN0028KA-B); adds 4 unused pins and exposes additional I/O (P3_0–P3_2, P4_0–P4_1). | Required when design needs >13 I/O pins or enhanced thermal dissipation in compact surface-mount layouts. | Choose R5F211B2NP if future I/O expansion or lower thermal resistance is needed; requires PCB redesign due to different footprint. |
Compared with R5F211B2SP#W4, R5F211B2DD offers identical functionality in through-hole form for ease of validation, while R5F211B2NP delivers extra I/O and thermal performance in a denser QFN package - neither is pin-compatible, but all share binary-compatible firmware and register mapping.
Availability
R5F211B2SP#W4 is available at Aetrix Electronics and suitable for home appliance control, office equipment monitoring, and portable industrial tester designs requiring stable component supply and long-term production continuity.
Supply support for R5F211B2SP#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, and power solutions for automotive, industrial, and IoT applications.
The R8C/1B Group, including R5F211B2SP#W4, was designed for cost-sensitive, low-power embedded control in consumer and general industrial equipment - emphasizing integration, firmware flexibility, and qualification for Standard-grade applications.
FAQ
What is the maximum operating frequency and corresponding supply voltage range for R5F211B2SP#W4?
The R5F211B2SP#W4 operates at up to 20 MHz with a supply voltage of 3.0 V to 5.5 V. At 10 MHz, it supports a wider range of 2.7 V to 5.5 V. This dual-voltage/frequency specification allows designers to optimize between performance and ultra-low-power operation depending on system requirements.
Does R5F211B2SP#W4 include on-chip debug support for firmware development?
Yes, the R5F211B2SP#W4 supports on-chip debugging via the single-wire background debug mode (BDM) using the RESET pin. This enables full breakpoint, step-through, and memory inspection capabilities without requiring additional debug headers or dedicated JTAG pins.
How many A/D input channels does R5F211B2SP#W4 provide, and what is their resolution?
The R5F211B2SP#W4 integrates a single 10-bit A/D converter with four analog input channels: AN8, AN9, AN10, and AN11. These are mapped to P1_0, P1_1, P1_2, and P1_3 respectively, and support programmable sample-and-hold timing and result alignment.
What is the data flash endurance rating for R5F211B2SP#W4, and how is it structured?
R5F211B2SP#W4 contains two independent 1 KB data flash blocks, each rated for 10,000 erase/write cycles. This structure allows wear-leveling across blocks and supports reliable storage of calibration data, device IDs, or runtime parameters without external nonvolatile memory.
Can R5F211B2SP#W4 operate in low-power modes, and what is the lowest current consumption achieved?
Yes, R5F211B2SP#W4 supports multiple low-power modes. In stop mode with peripheral clocks disabled, it achieves a typical current consumption of 0.7 µA at 3.0 V - making it suitable for battery-powered sensor nodes requiring multi-year operation on primary cells.
Is R5F211B2SP#W4 compatible with Renesas' standard development tools and IDEs?
Yes, R5F211B2SP#W4 is fully supported by Renesas CS+ (formerly HEW) IDE and the E8/E8a debug emulator. Firmware written for the R8C/1B Group compiles and debugs natively without modification, leveraging standardized peripheral register maps and instruction set architecture.
R5F211B2SP#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:
- 8KB (8K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 512 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:
R5F211B2SP#W4 FAQ
1.How can I place an order for R5F211B2SP#W4 through Aetrix?
Please submit a Request for Quotation (RFQ) for R5F211B2SP#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 R5F211B2SP#W4 reliable?
The price and inventory of R5F211B2SP#W4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R5F211B2SP#W4 is usually 5 days.
3.What payment methods are accepted for R5F211B2SP#W4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R5F211B2SP#W4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R5F211B2SP#W4?
R5F211B2SP#W4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R5F211B2SP#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 R5F211B2SP#W4?
For technical support, including R5F211B2SP#W4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R5F211B2SP#W4 requirements.
6.How does Aetrix verify that R5F211B2SP#W4 is sourced from the original manufacturer or authorized distributors?
All R5F211B2SP#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 R5F211B2SP#W4 meets industry standards.
7.What is the process for return or replacement of R5F211B2SP#W4?
All R5F211B2SP#W4 units undergo pre-shipment inspection (PSI). If there is an issue with R5F211B2SP#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 R5F211B2SP#W4 part is unused and in its original packaging.
Return procedure for R5F211B2SP#W4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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