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Renesas R5F211B4SP#U0
- Part No.:
- R5F211B4SP#U0
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 20-LSSOP (0.173", 4.40mm Width)
- Datasheet:
-
R5F211B4SP#U0.pdf
- Description:
- IC MCU 16BIT 16KB FLASH 20LSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,212
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Product details
Overview
R5F211B4SP#U0 from Renesas Electronics is a 16-bit single-chip microcontroller in the R8C/1B Group, featuring an R8C/Tiny Series CPU core, 16 KB program flash ROM, 1 KB RAM, and dual 1 KB data flash blocks. It operates at up to 20 MHz (50 ns min instruction time), supports 10-bit A/D conversion across 4 channels, and integrates UART, I²C, clock-synchronous serial I/O, and three timer modules (8-bit ×2, 16-bit ×1). It targets embedded control in consumer appliances and industrial sensors.
For engineers reviewing the R5F211B4SP#U0 datasheet, R5F211B4SP#U0 pinout, R5F211B4SP#U0 application, or R5F211B4SP#U0 equivalent, key selection criteria include its 20-pin LSSOP package (PLSP0020JB-A), -20°C to +85°C operating range, on-chip voltage detection and power-on reset, and dual data flash for reliable parameter storage in field-upgradable systems.
Technical Context
The R5F211B4SP#U0 implements the R8C/Tiny Series CPU with 89 fundamental instructions and a 1 Mbyte linear address space. Its memory subsystem includes 16 KB of reprogrammable flash ROM and two independent 1 KB data flash blocks rated for 10,000 erase/write cycles-enabling nonvolatile configuration storage without external EEPROM.
Peripheral integration centers on mixed-signal control: a 10-bit 4-channel A/D converter with internal reference input (VREF), three timers supporting input capture/output compare (Timer C) and LED drive (Timers X/Z), and dual serial interfaces-one UART plus one configurable channel supporting I²C bus, SSU, or clock-synchronous serial I/O.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | R8C/Tiny Series 16-bit, 89 instructions, 50 ns min execution time at 20 MHz |
| Memory | 16 KB program flash ROM + 1 KB RAM + 2 × 1 KB data flash (10k-cycle endurance) |
| A/D Converter | 10-bit resolution, 4 input channels (AN8–AN11), VREF-referenced operation |
| Timers | Timer X/Z: 8-bit ×2 with 8-bit prescaler; Timer C: 16-bit with input capture/output compare |
| Serial Interfaces | 1 UART + 1 multi-function channel (I²C / SSU / clock-sync serial I/O) |
| Supply & Temp | VCC = 2.7–5.5 V; operating ambient: -20°C to +85°C (standard grade) |
| Package | 20-pin LSSOP (PLSP0020JB-A), 0.65 mm pitch, surface-mount compatible |
Pinout & Package
Package: 20-pin molded-plastic LSSOP (PLSP0020JB-A), 7.6 mm × 4.4 mm body, 0.65 mm lead pitch, RoHS-compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (P3_5) | I²C Clock / SSCK / CMP1_2 | Shared I²C SCL, SSU clock, and comparator output; requires pull-up for I²C |
| 2 (P3_7) | Timer C Input / TXD1 / SSO | Configurable as CNTR0 input, UART1 transmit, or SSU data output |
| 3 (RESET) | Active-low reset input | Asynchronous reset assertion halts CPU and initializes peripherals |
| 4 (XOUT) | Main clock oscillator output | Drives external crystal/resonator; open when using external clock source |
| 6 (XIN) | Main clock oscillator input | Accepts crystal, ceramic resonator, or external clock signal (up to 20 MHz) |
| 9 (P4_5) | External interrupt / UART1 receive | INT0 trigger source and RXD1 input; supports wake-up from low-power modes |
| 14 (P1_3) | Key interrupt / Timer Z output / AN11 | Supports keypad scanning, PWM LED dimming, and analog input channel 4 |
| 18 (P1_0) | Key interrupt / A/D input / CMP0_0 | Primary key input pin with analog sensing and comparator functionality |
Key Features
| Feature | Design Value |
|---|---|
| Dual data flash blocks | Two independent 1 KB sectors enable wear-leveling and atomic firmware parameter updates |
| Integrated voltage detection | On-chip circuit monitors VCC and triggers reset or interrupt before brownout conditions affect operation |
| LED drive ports | P1_0–P1_3 support direct LED sinking with programmable current control for status indicators |
| Low-power operation | 0.7 µA stop mode and 35 µA wait mode allow battery-powered sensor nodes to operate for years |
| I²C bus interface | Hardware I²C master/slave with clock stretching support enables seamless communication with EEPROMs and sensors |
Applications
| Home Appliance Control | Industrial Sensor Node |
|---|---|
|
Use Scenario: Microcontroller in washing machine main control board managing motor drive timing, water level sensing, and user interface. IC Role / Device Role / Timing Role: Central system controller executing real-time motor sequencing, reading analog pressure/temperature sensors, and driving LED displays via P1_0–P1_3. Use Value: Integrated 10-bit A/D and dual data flash allow precise sensor calibration storage and field firmware updates without external memory. |
Use Scenario: Standalone temperature/humidity monitoring node in factory HVAC ducts, transmitting data over UART to gateway. IC Role / Device Role / Timing Role: Low-power sensor aggregator sampling analog inputs (AN8–AN11), processing readings, and waking periodically to transmit via UART. Use Value: 0.7 µA stop mode extends battery life; on-chip voltage detection prevents data corruption during supply dips. |
| Office Equipment | Security System Keypad |
|
Use Scenario: Embedded controller in document scanner managing paper feed motors, CIS image sensor interface, and USB bridge logic. IC Role / Device Role / Timing Role: Peripheral coordinator handling UART-based host commands, generating precise stepper motor timing via Timer C, and reading status switches. Use Value: 16-bit Timer C with input capture ensures accurate motor phase alignment; 20-pin LSSOP fits compact PCB layouts. |
Use Scenario: Keypad controller in access control panel detecting button presses and validating codes before door release. IC Role / Device Role / Timing Role: Key scan engine using KI0–KI3 inputs with debounce, storing PIN history in data flash, and signaling unlock via GPIO. Use Value: Dedicated key interrupt pins (KI0–KI3) reduce CPU polling overhead; dual data flash preserves audit logs across power cycles. |
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 | Through-hole assembly preferred; wider temperature range (-40°C to +85°C) | Select for legacy through-hole production or extended industrial temp requirements |
| R5F211B4NP | Same specifications; housed in 28-pin HWQFN (PWQN0028KA-B) with additional GPIO and NC pins | Higher I/O count needed; space-constrained designs requiring fine-pitch QFN | Choose when extra I/O or thermal performance justifies larger footprint and reflow process |
Compared with R5F211B4SP#U0, R5F211B4DD offers through-hole mounting and extended temperature rating but lacks LSSOP's compactness, while R5F211B4NP provides more GPIO and better thermal dissipation at the cost of increased board area and assembly complexity.
Availability
R5F211B4SP#U0 is available at Aetrix Electronics and suitable for home appliance control, industrial sensor nodes, and office equipment requiring stable component supply and long-term manufacturing continuity.
Supply support for R5F211B4SP#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 R8C/1B Group, including R5F211B4SP#U0, was designed for cost-sensitive, low-power embedded control in consumer and general industrial equipment-emphasizing integrated analog peripherals, flash flexibility, and compact packaging.
FAQ
What is the maximum operating frequency and corresponding supply voltage range for R5F211B4SP#U0?
R5F211B4SP#U0 supports a maximum operating frequency of 20 MHz at VCC = 3.0–5.5 V. At lower frequencies (e.g., 10 MHz), it operates down to 2.7 V. This dual-voltage/frequency specification allows design flexibility across battery-powered and line-powered applications while maintaining deterministic 50 ns minimum instruction execution time at full speed.
Does R5F211B4SP#U0 include hardware support for I²C communication?
Yes, R5F211B4SP#U0 includes a dedicated hardware I²C bus interface on pins P3_4 (SDA) and P3_5 (SCL), supporting both master and slave modes with clock stretching. This eliminates bit-banging overhead and ensures robust, standards-compliant communication with sensors, EEPROMs, and other I²C peripherals without CPU intervention.
How many data flash blocks does R5F211B4SP#U0 have, and what is their endurance rating?
R5F211B4SP#U0 contains two independent 1 KB data flash blocks, each rated for 10,000 erase/write cycles. This architecture enables safe storage of calibration data, device configuration, or usage logs with built-in wear-leveling strategies-critical for field-deployed equipment requiring long-term reliability without external nonvolatile memory.
What package type and pin count does R5F211B4SP#U0 use?
R5F211B4SP#U0 uses a 20-pin molded-plastic LSSOP package (PLSP0020JB-A) with 0.65 mm lead pitch. This surface-mount package provides compact board area, compatibility with standard reflow processes, and mechanical stability for high-volume consumer electronics manufacturing.
Can R5F211B4SP#U0 operate in ultra-low-power modes, and what are the typical current draws?
Yes, R5F211B4SP#U0 supports multiple low-power states: wait mode draws 35 µA (VCC = 3.0 V, peripheral clocks off), and stop mode draws just 0.7 µA (VCC = 3.0 V). These modes retain RAM content and allow wake-up via interrupts, making R5F211B4SP#U0 suitable for battery-operated sensor nodes requiring multi-year operational life.
R5F211B4SP#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:
- 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:
- -20°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
R5F211B4SP#U0 FAQ
1.How can I place an order for R5F211B4SP#U0 through Aetrix?
Please submit a Request for Quotation (RFQ) for R5F211B4SP#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 R5F211B4SP#U0 reliable?
The price and inventory of R5F211B4SP#U0 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R5F211B4SP#U0 is usually 5 days.
3.What payment methods are accepted for R5F211B4SP#U0?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R5F211B4SP#U0 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R5F211B4SP#U0?
R5F211B4SP#U0 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R5F211B4SP#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 R5F211B4SP#U0?
For technical support, including R5F211B4SP#U0 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R5F211B4SP#U0 requirements.
6.How does Aetrix verify that R5F211B4SP#U0 is sourced from the original manufacturer or authorized distributors?
All R5F211B4SP#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 R5F211B4SP#U0 meets industry standards.
7.What is the process for return or replacement of R5F211B4SP#U0?
All R5F211B4SP#U0 units undergo pre-shipment inspection (PSI). If there is an issue with R5F211B4SP#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 R5F211B4SP#U0 part is unused and in its original packaging.
Return procedure for R5F211B4SP#U0:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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