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Renesas R5F211B4DSP#U0
- Part No.:
- R5F211B4DSP#U0
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 20-LSSOP (0.173", 4.40mm Width)
- Datasheet:
-
R5F211B4DSP#U0.pdf
- Description:
- IC MCU 16BIT 16KB FLASH 20LSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,965
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Product details
Overview
R5F211B4DSP#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 R5F211B4DSP#U0 datasheet, R5F211B4DSP#U0 pinout, R5F211B4DSP#U0 application, or R5F211B4DSP#U0 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 data flash for reliable parameter storage in field-upgradable systems.
Technical Context
The R5F211B4DSP#U0 implements the R8C/Tiny Series 16-bit CPU with 89 fundamental instructions and a 1 Mbyte linear address space. Its memory subsystem includes 16 KB of flash-programmable program 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 VREF input, three timers (Timer X/Z for basic timing, Timer C for input capture/output compare), and dual serial interfaces-one combining UART and clock-synchronous I/O, the other supporting I²C bus or SSU protocols. All operate under a dual-clock system with main crystal/resonator and adjustable high-speed on-chip oscillator.
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 + 2 × 1 KB data flash (10k cycles) + 1 KB RAM |
| A/D Converter | 10-bit resolution, 4 input channels (AN8–AN11), external reference (VREF) support |
| Timers | Timer X/Z: 8-bit ×2 with 8-bit prescaler; Timer C: 16-bit with input capture/output compare |
| Serial Interfaces | UART + clock-synchronous serial I/O (1 channel); I²C bus or SSU (1 channel) |
| Supply & Temp | VCC = 2.7–5.5 V; operating ambient: -40°C to +85°C (D-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; internal pull-up; accepts 0–VCC logic levels |
| 4 (XOUT) | Main clock oscillator output | Drives external crystal/resonator; open when using external clock source |
| 5 (VSS/AVSS) | Digital/analog ground | Common return for digital logic and A/D converter; decoupling required |
| 6 (XIN) | Main clock oscillator input | Accepts crystal, ceramic resonator, or external clock signal (0–20 MHz) |
| 7 (VCC/AVCC) | Digital/analog supply | Single 2.7–5.5 V rail powers core and A/D; AVCC requires local filtering |
| 8 (MODE) | Boot mode select | Must be tied to VCC via resistor to enable normal flash execution mode |
| 9 (P4_5) | Interrupt 0 / RXD1 | Edge-triggered external interrupt or UART1 receive input |
| 10 (P1_7) | Interrupt 10 / CNTR00 | Programmable interrupt source or Timer X counter input |
| 11 (P1_6) | CLK0 / SSI01 | Transfer clock I/O for primary serial interface or general-purpose I/O |
| 12 (P1_5) | Interrupt 11 / RXD0 / CNTR01 | Multi-function pin: UART0 receive, Timer X counter, or external interrupt |
| 13 (P1_4) | TXD0 | UART0 transmit output; CMOS level, 5 V tolerant |
| 14 (P1_3) | KI3 / TZOUT / AN11 | Key interrupt input, Timer Z output, or A/D channel 3 analog input |
| 15 (P1_2) | KI2 / CMP0_2 / AN10 | Key interrupt input, comparator output, or A/D channel 2 analog input |
| 16 (VREF) | A/D reference voltage input | Accepts external reference (0–VCC); enables precise ratiometric measurements |
| 17 (P1_1) | KI1 / CMP0_1 / AN9 | Key interrupt input, comparator output, or A/D channel 1 analog input |
| 18 (P1_0) | KI0 / CMP0_0 / AN8 | Key interrupt input, comparator output, or A/D channel 0 analog input |
| 19 (P3_3) | INT3 / TCIN / CMP1_0 / SSI00 | External interrupt, Timer C input, comparator output, or SSU data I/O |
| 20 (P3_4) | SCS / SDA / CMP1_1 | I²C data line, SSU chip select, or comparator output; bidirectional with pull-up |
Key Features
| Feature | Design Value |
|---|---|
| Dual data flash blocks | Two independent 1 KB sectors (10,000 erase/write cycles) for robust firmware parameter storage and field updates |
| Integrated analog front-end | 10-bit 4-channel A/D with external VREF input and dedicated analog supply pins (AVCC/AVSS) for noise-sensitive measurement |
| Mixed-signal serial connectivity | Hardware UART + clock-synchronous I/O + I²C/SSU on shared pins-reducing BOM count while supporting sensor networks and display interfaces |
| Low-power operation modes | Wait mode (35 µA @ 3.0 V) and stop mode (0.7 µA @ 3.0 V) with selective peripheral clock gating for battery-powered applications |
| On-chip protection circuits | Power-on reset, voltage detection, oscillation stop detection, and watchdog timer (15-bit with prescaler) for fail-safe embedded control |
| LED drive capability | P1_0–P1_3 support direct LED driving with programmable current sink-eliminating external drivers in status indicator designs |
Applications
| Home Appliance Control | Industrial Sensor Node |
|---|---|
|
Use Scenario: Microcontroller in washing machine main control board managing motor sequencing, water valve actuation, and user interface. IC Role / Device Role / Timing Role: Primary system controller executing real-time motor control loops, reading front-panel key inputs (KI0–KI3), and converting temperature/pressure sensor signals via 10-bit A/D. Use Value: Dual data flash enables field-upgradable wash cycle algorithms and calibration data retention across power cycles without external NVM. |
Use Scenario: Standalone environmental sensor node measuring temperature, humidity, and air quality in HVAC ducts with wireless reporting. IC Role / Device Role / Timing Role: Data acquisition engine sampling analog sensors (AN8–AN11), performing local compensation, and formatting packets for UART transmission to gateway. Use Value: Integrated voltage detection and watchdog ensure reliable operation during brown-out events common in unregulated building power environments. |
| Office Equipment Interface | Portable Audio Device |
|
Use Scenario: Embedded controller in multifunction printer managing paper feed, ink level monitoring, and LCD menu navigation. IC Role / Device Role / Timing Role: Peripheral coordinator handling I²C communication with toner ICs, UART debug logging, and LED status indicators driven directly from P1_0–P1_3. Use Value: LSSOP-20 package provides compact footprint for space-constrained PCB layouts while maintaining full serial and analog I/O capability. |
Use Scenario: Firmware-updatable audio player with volume control, battery monitoring, and OLED display interface. IC Role / Device Role / Timing Role: System manager reading battery voltage (AN8), decoding rotary encoder inputs (KI0/KI1), and driving display via UART or clock-synchronous serial I/O. Use Value: High-speed on-chip oscillator with frequency adjustment allows precise baud rate generation without external crystal-reducing component count and cost. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R5F211B4SP | No extended temperature grade; rated -20°C to +85°C vs. R5F211B4DSP#U0's -40°C to +85°C | Suitable for indoor consumer electronics but not automotive or industrial enclosures with wide thermal swings | Select R5F211B4SP only if ambient temperature remains above -20°C; otherwise R5F211B4DSP#U0 ensures reliability in cold environments. |
| R5F211B4DD | Same D-grade temp range but SDIP-20 package (PRDP0020BA-A) instead of LSSOP | Preferred for through-hole prototyping or legacy wave-solder assembly; larger footprint and higher profile than LSSOP | Choose R5F211B4DD for manual assembly or compatibility with existing SDIP footprints; R5F211B4DSP#U0 suits modern SMT production. |
Compared with R5F211B4SP and R5F211B4DD, the R5F211B4DSP#U0 uniquely combines industrial-grade temperature tolerance (-40°C to +85°C) with the compact, fine-pitch LSSOP-20 package-making it optimal for space-constrained, thermally demanding embedded control where reworkability and automated assembly are critical.
Availability
R5F211B4DSP#U0 is available at Aetrix Electronics and suitable for home appliance control, industrial sensor nodes, office equipment interfaces, and portable audio devices requiring stable component supply and long-term manufacturability.
Supply support for R5F211B4DSP#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, power, and SoC solutions for industrial, automotive, and consumer markets.
The R8C/1B Group, including R5F211B4DSP#U0, was designed for cost-sensitive, low-power embedded control applications requiring integrated analog peripherals, dual data flash, and flexible serial connectivity in compact packages.
FAQ
What is the maximum operating frequency and instruction speed of the R5F211B4DSP#U0?
The R5F211B4DSP#U0 supports a maximum main clock frequency of 20 MHz, achieving a minimum instruction execution time of 50 ns under VCC = 3.0–5.5 V conditions. This performance is enabled by its R8C/Tiny Series 16-bit CPU core with optimized 89-instruction set and efficient pipeline architecture-suitable for real-time control tasks in appliances and sensors.
Does the R5F211B4DSP#U0 include on-chip debugging support?
The R5F211B4DSP#U0 does not integrate on-chip debug circuitry such as JTAG or FINE interfaces. Debugging requires external tools compatible with Renesas' standard Flash development environment, using the on-chip bootloader accessed via UART or dedicated programming pins-consistent with the R8C/1B Group's design for cost-optimized production deployment.
How many A/D converter channels does the R5F211B4DSP#U0 support, and what is their resolution?
The R5F211B4DSP#U0 integrates a single 10-bit successive-approximation A/D converter with four input channels (AN8–AN11), each configurable via software. It supports external reference voltage input (VREF pin), enabling precise ratiometric measurements essential for sensor conditioning in industrial and appliance applications.
What are the data flash endurance and sector organization for the R5F211B4DSP#U0?
The R5F211B4DSP#U0 contains two independent 1 KB data flash blocks, each rated for 10,000 erase/write cycles. These blocks are electrically isolated and programmable under VCC = 2.7–5.5 V, allowing safe storage of calibration data, device configuration, or firmware update metadata without affecting program ROM integrity.
Is the R5F211B4DSP#U0 pin-compatible with other R8C/1B Group members in the same package?
Yes-the R5F211B4DSP#U0 shares identical pinout, electrical characteristics, and peripheral mapping with all other R8C/1B Group devices in the PLSP0020JB-A (LSSOP-20) package, including R5F211B1DSP, R5F211B2DSP, and R5F211B3DSP. Only ROM size, RAM size, and data flash content differ across variants.
R5F211B4DSP#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:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
R5F211B4DSP#U0 FAQ
1.How can I place an order for R5F211B4DSP#U0 through Aetrix?
Please submit a Request for Quotation (RFQ) for R5F211B4DSP#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 R5F211B4DSP#U0 reliable?
The price and inventory of R5F211B4DSP#U0 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R5F211B4DSP#U0 is usually 5 days.
3.What payment methods are accepted for R5F211B4DSP#U0?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R5F211B4DSP#U0 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R5F211B4DSP#U0?
R5F211B4DSP#U0 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R5F211B4DSP#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 R5F211B4DSP#U0?
For technical support, including R5F211B4DSP#U0 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R5F211B4DSP#U0 requirements.
6.How does Aetrix verify that R5F211B4DSP#U0 is sourced from the original manufacturer or authorized distributors?
All R5F211B4DSP#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 R5F211B4DSP#U0 meets industry standards.
7.What is the process for return or replacement of R5F211B4DSP#U0?
All R5F211B4DSP#U0 units undergo pre-shipment inspection (PSI). If there is an issue with R5F211B4DSP#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 R5F211B4DSP#U0 part is unused and in its original packaging.
Return procedure for R5F211B4DSP#U0:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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