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Renesas R5F211A2DSP#U0
- Part No.:
- R5F211A2DSP#U0
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 20-LSSOP (0.173", 4.40mm Width)
- Datasheet:
-
R5F211A2DSP#U0.pdf
- Description:
- IC MCU 16BIT 8KB FLASH 20LSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,838
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Product details
Overview
R5F211A2DSP#U0 from Renesas Electronics is a 16-bit single-chip microcontroller in the R8C/1A Group, featuring an R8C/Tiny Series CPU core, 8 KB flash program memory, 512 bytes RAM, and operation across -40°C to +85°C ambient temperature. It integrates a 10-bit 4-channel A/D converter, three timers (8-bit ×2, 16-bit ×1), UART, clock-synchronous serial I/O, I²C bus interface, and LED drive capability on 4 I/O pins - deployed in consumer appliance control and industrial sensor interfaces.
For engineers reviewing the R5F211A2DSP#U0 datasheet, R5F211A2DSP#U0 pinout, R5F211A2DSP#U0 application, or R5F211A2DSP#U0 equivalent, key selection criteria include its LSSOP-20 package with 13 general-purpose I/O pins, 2.7–5.5 V supply range, sub-1 µA stop-mode current, and absence of on-chip data flash (distinguishing it from R8C/1B variants).
Technical Context
This MCU implements the R8C/Tiny CPU core with 89 fundamental instructions and executes at 50 ns minimum instruction time (20 MHz XIN, 3.0–5.5 V). Its memory map spans 1 Mbyte, supporting single-chip operation without external bus expansion.
Peripheral integration includes dual clock generation circuits (main crystal oscillator + high-/low-speed on-chip oscillators), on-chip voltage detection and power-on reset, and interrupt support with 7 priority levels covering 11 internal, 4 external, and 4 software sources.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | R8C/Tiny 16-bit architecture with register bank switching and 20-bit program counter |
| Flash Memory | 8 KB program ROM - sufficient for compact firmware in appliance motor control or sensor polling tasks |
| RAM | 512 bytes - supports real-time variable storage for up to ~20 concurrent sensor readings or state-machine contexts |
| A/D Converter | 10-bit resolution, 4 input channels (AN8–AN11) - enables direct analog sensing of temperature, light, or potentiometer signals |
| Supply Voltage | 2.7–5.5 V - compatible with both 3.3 V and 5 V system rails without level-shifting |
| Operating Temperature | -40°C to +85°C (D version) - qualified for industrial-grade deployment in HVAC controls or factory-floor sensors |
| Low-Power Modes | Stop mode draws 0.7 µA at 3.0 V - extends battery life in portable diagnostic tools or wireless sensor nodes |
Pinout & Package
Package: 20-pin molded-plastic LSSOP (PLSP0020JB-A), 0.65 mm pitch, surface-mount, JEDEC MS-013AC 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 - supports touch-button wake-up or thermistor interface |
| P1_4 / TXD0 | UART transmit output | Drives RS-232 or TTL-level serial debug/log output without external driver circuitry |
| P3_4 / SCS / SDA / CMP1_1 | Shared I²C data line & chip select | Enables bidirectional I²C communication (SDA) or SSU peripheral selection (SCS) - reduces pin count in multi-sensor systems |
| XIN / P4_6 | Main clock input | Accepts 20 MHz crystal or external clock signal - sets system timing base for all peripherals and CPU execution |
| RESET | Active-low reset input | Asynchronous hardware reset - ensures deterministic startup after power-up or brownout recovery |
Key Features
| Feature | Design Value |
|---|---|
| LED Drive Ports | 4 dedicated I/O pins (P1_0–P1_3) with enhanced sink current - directly drives common-anode LEDs in status indicators without external transistors |
| On-Chip Oscillators | High-speed and low-speed on-chip oscillators with frequency adjustment - eliminates need for external crystals in cost-sensitive applications |
| Interrupt Flexibility | 7 priority levels and 19 total interrupt sources - supports responsive real-time handling of UART RX, timer overflows, and external sensor triggers |
| Watchdog Timer | 15-bit watchdog with prescaler and reset-start select - prevents firmware lockup in unattended embedded systems like vending controllers |
| Power Management | Wait and stop modes with peripheral clock gating - achieves <1 µA standby current while retaining RAM contents and wake-up capability |
Applications
| Home Appliance Control | Industrial Sensor Interface |
|---|---|
|
Use Scenario: Microcontroller in washing machine main board managing motor sequencing, water level sensing, and user interface. IC Role / Device Role / Timing Role: Central control unit executing state-machine logic, reading analog pressure sensor outputs, and driving LED display segments. Use Value: Integrated 10-bit A/D and LED drive ports reduce BOM count by eliminating external ADC and LED drivers. |
Use Scenario: Compact environmental monitor measuring temperature, humidity, and air quality in factory settings. IC Role / Device Role / Timing Role: Data acquisition node sampling analog sensors via A/D, formatting packets via UART/I²C, and entering low-power sleep between readings. Use Value: -40°C to +85°C rating and 0.7 µA stop-mode current ensure reliable long-term operation in unconditioned industrial spaces. |
| Office Equipment | Portable Diagnostic Tool |
|
Use Scenario: Firmware controller in document scanner managing paper feed motors, CIS image sensor timing, and button inputs. IC Role / Device Role / Timing Role: Real-time coordinator of stepper motor pulses (via Timer C output compare), key scan (KI0–KI3), and UART command parsing. Use Value: 8-bit timers with 8-bit prescalers provide precise 100 µs–10 ms timing windows for motor phase control and sensor synchronization. |
Use Scenario: Handheld test instrument capturing analog waveforms from industrial equipment and logging via USB-UART bridge. IC Role / Device Role / Timing Role: Signal conditioning front-end with A/D conversion, buffer management, and UART transmission under battery power constraints. Use Value: 2.7–5.5 V supply range allows direct use of single-cell Li-ion (3.0–4.2 V) or two-AA (2.4–3.2 V) batteries without regulator overhead. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 16-bit microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R5F211A2DD | Same core, memory, and peripherals; SDIP-20 package instead of LSSOP-20 | Better suited for through-hole prototyping or legacy PCBs requiring DIP footprint | Select when manual assembly, socket-based testing, or thermal mass requirements favor SDIP over LSSOP |
| R5F211B2DSP | Adds 2 KB data flash (1 KB ×2 blocks); otherwise identical pinout and peripheral set | Required for field-upgradable calibration tables or nonvolatile configuration storage | Choose only if runtime reprogramming of parameter sets is mandatory - adds cost and complexity without benefit otherwise |
Compared with R5F211A2DSP#U0, R5F211A2DD offers identical functionality in a through-hole package for easier evaluation, while R5F211B2DSP provides data flash for persistent parameter storage - neither is pin-compatible replacement without verifying flash-related code dependencies.
Availability
R5F211A2DSP#U0 is available at Aetrix Electronics and suitable for home appliance control, industrial sensor interface, and office equipment requiring stable component supply across extended production lifecycles.
Supply support for R5F211A2DSP#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 formed in 2010 from the merger of NEC Electronics and Renesas Technology, specializing in microcontrollers, analog, and power solutions.
The R8C/1A Group was designed for cost-sensitive, low-power embedded control in consumer and industrial applications - emphasizing integration of A/D, timers, and communication interfaces in compact packages.
FAQ
What is the maximum operating frequency of the R5F211A2DSP#U0?
The R5F211A2DSP#U0 supports a maximum main clock frequency of 20 MHz when powered at 3.0–5.5 V, delivering a minimum instruction execution time of 50 ns. This timing is validated for stable operation across its full specified temperature range (-40°C to +85°C), enabling deterministic real-time response in motor control loops or sensor polling routines using the R5F211A2DSP#U0.
Does the R5F211A2DSP#U0 include on-chip data flash memory?
No, the R5F211A2DSP#U0 belongs to the R8C/1A Group and contains only program flash memory (8 KB). It does not integrate data flash - unlike the R8C/1B Group (e.g., R5F211B2DSP), which provides 1 KB ×2 data flash blocks. Applications requiring runtime writable nonvolatile storage must implement external EEPROM or select an R8C/1B variant instead of the R5F211A2DSP#U0.
Which package type is used by the R5F211A2DSP#U0?
The R5F211A2DSP#U0 uses the PLSP0020JB-A package: a 20-pin molded-plastic LSSOP (lead shrink small outline package) with 0.65 mm lead pitch. This surface-mount package is RoHS-compliant and optimized for automated assembly in space-constrained applications such as smart appliance control boards where the R5F211A2DSP#U0 is commonly deployed.
Can the R5F211A2DSP#U0 operate from a 3.3 V supply?
Yes, the R5F211A2DSP#U0 operates reliably from 2.7 V to 5.5 V, fully supporting standard 3.3 V system rails. At 3.0 V and 10 MHz operation, typical current consumption is 5 mA (A/D stopped), and stop-mode current drops to 0.7 µA - making the R5F211A2DSP#U0 suitable for mixed-voltage designs where other peripherals run at 3.3 V.
What communication interfaces are integrated into the R5F211A2DSP#U0?
The R5F211A2DSP#U0 integrates three serial interfaces: one UART channel (TXD0/RXD0), one clock-synchronous serial I/O (SSI00/SSI01), and one I²C bus interface (SCL/SDA). These enable flexible connectivity to displays, sensors, and host processors - all accessible within its 20-pin LSSOP footprint without external transceivers, simplifying design around the R5F211A2DSP#U0.
R5F211A2DSP#U0 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- 20-LSSOP (0.173", 4.40mm Width)
- Series:
- R8C/1x/1A
- Packaging:
- Tube
- Product Status:
- Obsolete
- Programmable:
- Not 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:
R5F211A2DSP#U0 FAQ
1.How can I place an order for R5F211A2DSP#U0 through Aetrix?
Please submit a Request for Quotation (RFQ) for R5F211A2DSP#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 R5F211A2DSP#U0 reliable?
The price and inventory of R5F211A2DSP#U0 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R5F211A2DSP#U0 is usually 5 days.
3.What payment methods are accepted for R5F211A2DSP#U0?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R5F211A2DSP#U0 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R5F211A2DSP#U0?
R5F211A2DSP#U0 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R5F211A2DSP#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 R5F211A2DSP#U0?
For technical support, including R5F211A2DSP#U0 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R5F211A2DSP#U0 requirements.
6.How does Aetrix verify that R5F211A2DSP#U0 is sourced from the original manufacturer or authorized distributors?
All R5F211A2DSP#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 R5F211A2DSP#U0 meets industry standards.
7.What is the process for return or replacement of R5F211A2DSP#U0?
All R5F211A2DSP#U0 units undergo pre-shipment inspection (PSI). If there is an issue with R5F211A2DSP#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 R5F211A2DSP#U0 part is unused and in its original packaging.
Return procedure for R5F211A2DSP#U0:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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