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Renesas R5F211B2DSP#U0
- Part No.:
- R5F211B2DSP#U0
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 20-LSSOP (0.173", 4.40mm Width)
- Datasheet:
-
R5F211B2DSP#U0.pdf
- Description:
- IC MCU 16BIT 8KB FLASH 20LSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,209
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Product details
Overview
R5F211B2DSP#U0 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 (2 KB total), 512 bytes RAM, and operation across -40°C to +85°C. It integrates 10-bit A/D conversion (4 channels), UART, I²C, clock-synchronous serial I/O, three timers (8-bit ×2, 16-bit ×1), and LED drive capability on four I/O pins - deployed in consumer appliance control and industrial sensor interfaces.
For engineers reviewing the R5F211B2DSP#U0 datasheet, R5F211B2DSP#U0 pinout, R5F211B2DSP#U0 application, or R5F211B2DSP#U0 equivalent, key selection criteria include its dual data flash blocks for reliable parameter storage, 20-pin LSSOP package with mixed analog/digital I/O, low-power stop mode (0.7 µA), and integrated voltage detection and power-on reset circuits.
Technical Context
The R5F211B2DSP#U0 implements the R8C/Tiny CPU core with 89 fundamental instructions and executes at 50 ns minimum instruction time (20 MHz main clock, 3.0–5.5 V). Its memory architecture separates program ROM (8 KB) from dual-block data flash (1 KB × 2), enabling independent erase/write cycles for configuration data without disrupting firmware.
Peripheral integration includes a 10-bit A/D converter with four analog inputs (AN8–AN11), two UART channels (TXD0/RXD0 and TXD1/RXD1), I²C bus interface (SCL/SDA), SSU with chip select (SCS/SSCK/SSO), and timer resources supporting input capture (TCIN), output compare (CMP0/CMP1), and PWM generation (TZOUT).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | R8C/Tiny 16-bit, 89 instructions, 50 ns min. execution (20 MHz) |
| Memory | 8 KB flash program ROM + 2 KB data flash (1 KB × 2 blocks) + 512 B RAM |
| Operating Temp | -40°C to +85°C (D-grade industrial temperature range) |
| A/D Converter | 10-bit resolution, 4-channel input (AN8–AN11), internal reference support via VREF |
| Power Modes | Stop mode current: 0.7 µA @ 3.0 V; Wait mode: 35 µA @ 3.0 V, peripheral clocks off |
| Supply Voltage | 2.7–5.5 V - supports direct battery or regulated rail operation without external LDO |
| 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 |
|---|---|---|
| P1_0 / KI0 / AN8 / CMP0_0 | Multi-function I/O port | Configurable as key interrupt input, analog input channel 0, or comparator output 0 |
| P1_4 / TXD0 | UART transmit output | Drives serial data for primary UART channel; CMOS-level output, TTL-compatible |
| P3_4 / SCS / SDA / CMP1_1 | I²C data / SSU chip select | Open-drain capable for I²C bus; also serves as SSU chip-select signal |
| XIN / P4_6 | Main clock input | Accepts crystal (1–20 MHz) or external clock; internal feedback resistor enables standalone oscillator |
| RESET | Active-low reset input | Asynchronous reset assertion clears CPU registers and halts execution until deasserted |
Key Features
| Feature | Design Value |
|---|---|
| Dual data flash blocks | Enables wear-leveling and safe firmware parameter updates without erasing program code |
| Integrated voltage detection | On-chip circuit monitors VCC and triggers reset or interrupt before brownout affects operation |
| LED drive ports | Four I/O pins (P1_0–P1_3) support direct LED sink/source up to 20 mA per pin |
| Low-power stop mode | 0.7 µA consumption at 3.0 V allows multi-year battery life in intermittent-sensing applications |
| I²C + UART + SSU | Three independent serial interfaces permit concurrent communication with sensors, displays, and host controllers |
Applications
| Home Appliance Control | Industrial Sensor Node |
|---|---|
Use Scenario: Microcontroller in washing machine control board managing motor sequencing, water level sensing, and user interface. IC Role / Device Role / Timing Role: Primary system controller executing real-time motor timing, A/D sampling of pressure transducer, and LED display refresh. Use Value: Integrated 10-bit A/D and LED drive reduce BOM count; data flash stores calibration offsets across power cycles. |
Use Scenario: Standalone environmental monitor logging temperature/humidity and transmitting via UART to gateway. IC Role / Device Role / Timing Role: Data acquisition engine with periodic wake-up from stop mode, A/D conversion, and UART transmission burst. Use Value: 0.7 µA stop-mode current extends battery life to >5 years; dual data flash retains sensor calibration and event logs. |
| Office Equipment Interface | Portable Audio Device |
Use Scenario: Embedded controller in document scanner handling button inputs, stepper motor control, and status LED feedback. IC Role / Device Role / Timing Role: Input scanning via KI0–KI3 interrupts, precise motor step timing using Timer C, and LED status indication. Use Value: Key interrupt inputs eliminate external debounce logic; LED drive ports simplify front-panel design. |
Use Scenario: Firmware-upgradable audio player with volume control, battery monitoring, and OLED display interface. IC Role / Device Role / Timing Role: System manager coordinating I²C OLED control, ADC-based battery voltage monitoring, and UART firmware update path. Use Value: I²C interface directly drives display; on-chip voltage detection prevents unexpected shutdown during low-battery operation. |
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, peripherals; packaged in 20-pin SDIP (PRDP0020BA-A) instead of LSSOP | Through-hole assembly required; no reflow compatibility; identical electrical behavior | Select for legacy through-hole production or prototyping with breadboard-friendly footprint |
| R5F211B2NP | Same specifications but in 28-pin HWQFN (PWQN0028KA-B); adds 8 extra I/O pins and NC pads | Higher I/O density needed; requires PCB redesign; same temp range and flash endurance | Choose when additional GPIO or routing flexibility justifies QFN layout complexity and reflow process |
Compared with R5F211B2DSP#U0, the R5F211B2DD offers identical functionality in through-hole packaging for manual assembly, while R5F211B2NP provides expanded I/O in a space-efficient QFN - neither is pin-compatible, but all share identical firmware, memory map, and peripheral register sets.
Availability
R5F211B2DSP#U0 is available at Aetrix Electronics and suitable for home appliance control, industrial sensor nodes, and office equipment requiring stable component supply across extended product lifecycles.
Supply support for R5F211B2DSP#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 industrial, automotive, and consumer markets.
The R5F211B2DSP#U0 belongs to the R8C/1B Group - a cost-optimized 16-bit MCU family designed for resource-constrained embedded systems requiring low power, integrated analog peripherals, and robust flash reliability in industrial temperature environments.
FAQ
What is the maximum operating frequency and supply voltage range for R5F211B2DSP#U0?
The R5F211B2DSP#U0 operates at up to 20 MHz with a supply voltage range of 3.0–5.5 V. At 10 MHz, it supports down to 2.7 V. Minimum instruction execution time is 50 ns under 20 MHz/3.0–5.5 V conditions. The device includes on-chip oscillation stop detection and voltage detection to ensure safe operation across this range.
Does R5F211B2DSP#U0 support in-system programming and how many data flash write cycles are guaranteed?
Yes, R5F211B2DSP#U0 supports in-system programming via on-chip debug interface. Its data flash is rated for 10,000 write/erase cycles per block (1 KB × 2), enabling reliable field updates of calibration data or configuration parameters without requiring full firmware reflash.
What serial communication interfaces does R5F211B2DSP#U0 integrate?
R5F211B2DSP#U0 integrates three serial interfaces: one UART (TXD0/RXD0), one UART/I²C shared channel (TXD1/RXD1/SCL/SDA), and one clock-synchronous serial I/O with chip select (SSI00/SSI01/SCS/SSCK/SSO). This enables concurrent communication with multiple peripherals such as sensors, displays, and host controllers.
How does the R5F211B2DSP#U0 handle reset and power management?
R5F211B2DSP#U0 features an active-low RESET pin, on-chip power-on reset circuit, and voltage detection circuit that triggers reset or interrupt on undervoltage. It supports three low-power modes: HALT (CPU stopped), WAIT (peripheral clocks off), and STOP (0.7 µA @ 3.0 V), with wake-up via external interrupt or timer.
Is R5F211B2DSP#U0 pin-compatible with other R8C/1B Group devices like R5F211B2DD or R5F211B2NP?
No - R5F211B2DSP#U0 uses the 20-pin LSSOP package (PLSP0020JB-A), while R5F211B2DD uses 20-pin SDIP (PRDP0020BA-A) and R5F211B2NP uses 28-pin HWQFN (PWQN0028KA-B). Pin counts, layouts, and mechanical footprints differ; firmware and register mapping are identical, but PCB layout is not interchangeable.
R5F211B2DSP#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:
- 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:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
R5F211B2DSP#U0 FAQ
1.How can I place an order for R5F211B2DSP#U0 through Aetrix?
Please submit a Request for Quotation (RFQ) for R5F211B2DSP#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 R5F211B2DSP#U0 reliable?
The price and inventory of R5F211B2DSP#U0 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R5F211B2DSP#U0 is usually 5 days.
3.What payment methods are accepted for R5F211B2DSP#U0?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R5F211B2DSP#U0 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R5F211B2DSP#U0?
R5F211B2DSP#U0 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R5F211B2DSP#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 R5F211B2DSP#U0?
For technical support, including R5F211B2DSP#U0 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R5F211B2DSP#U0 requirements.
6.How does Aetrix verify that R5F211B2DSP#U0 is sourced from the original manufacturer or authorized distributors?
All R5F211B2DSP#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 R5F211B2DSP#U0 meets industry standards.
7.What is the process for return or replacement of R5F211B2DSP#U0?
All R5F211B2DSP#U0 units undergo pre-shipment inspection (PSI). If there is an issue with R5F211B2DSP#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 R5F211B2DSP#U0 part is unused and in its original packaging.
Return procedure for R5F211B2DSP#U0:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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