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Renesas R4F20203NFD#00
- Part No.:
- R4F20203NFD#00
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 80-LQFP
- Datasheet:
-
R4F20203NFD#00.pdf
- Description:
- 4-8BIT GENERAL MCU H/300H TINY
- Quantity:
- Payment:
- Shipping:
Inventory:2,405
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Product details
Overview
R4F20203NFD#00 from Renesas Electronics is a 16-bit single-chip microcontroller in the H8S/Tiny family, designed for embedded control applications requiring integrated peripherals, low-power operation, and deterministic real-time response. It features 128 KB on-chip Flash memory, 8 KB RAM, a 32 MHz max CPU clock, 57 I/O pins, and integrated modules including SCI, I²C, PWM timers, and watchdog timer.
For engineers reviewing the R4F20203NFD#00 datasheet, R4F20203NFD#00 pinout, R4F20203NFD#00 application, or R4F20203NFD#00 equivalent, this page delivers verified technical context, package mapping, functional pin roles, real-world use cases, and validated alternative options - all grounded in Renesas' official H8S/20203 hardware manual (Rev. 3.00, Sep 2010).
Technical Context
The R4F20203NFD#00 implements the H8S/2000 CPU core with 24-bit address space, supporting advanced mode for enhanced interrupt handling and memory-mapped peripheral access. Its clock system includes internal oscillator, external crystal support up to 32 MHz, and programmable PLL for flexible system timing.
Peripheral integration includes three serial communication interfaces (SCI), one I²C bus interface (IIC2), two 16-bit timer units with compare match and interval count functions, 12-bit A/D converter with 8 channels, and low-voltage detection (LVD) circuitry - all accessible via memory-mapped SFRs and controllable through dedicated control registers.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | H8S/2000 16-bit CISC core with 24-bit addressing and advanced interrupt mode |
| Max Operating Frequency | 32 MHz - enables deterministic real-time control loops with sub-μs instruction timing |
| On-Chip Memory | 128 KB Flash (programmable in-system), 8 KB RAM - supports firmware updates and data buffering without external memory |
| I/O Pins | 57 CMOS bidirectional pins - configurable as general-purpose I/O or multiplexed peripheral functions (SCI, I²C, PWM, ADC) |
| Analog Peripherals | 12-bit A/D converter with 8 input channels and sample-and-hold - suitable for sensor signal acquisition in industrial monitoring |
| Timer Resources | Two 16-bit timer units (TMR0/TMR1), each with compare match, interval count, and capture/compare modes - supports motor control timing and pulse measurement |
| Communication Interfaces | SCI ×3 (UART-compatible), IIC2 (I²C bus), and synchronous serial unit (SSU) - enables multi-protocol connectivity to sensors, displays, and host controllers |
Pinout & Package
The R4F20203NFD#00 is housed in a 80-pin LQFP (12 mm × 12 mm, 0.5 mm pitch) package, compliant with JEDEC MO-207AB. Pin assignments are defined in Section 1.4 of the Renesas H8S/20103–20235 Hardware User's Manual (Rev. 3.00).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC, VSS | Power supply and ground | Dual 5 V supply domains: VCC for I/O and core logic, VSS as reference return - requires local decoupling per Renesas layout guidelines |
| XTAL, EXTAL | Crystal oscillator input/output | Supports 1–32 MHz external crystal or ceramic resonator - enables precise system clock generation with ±100 ppm stability |
| RESET | Active-low reset input | Asynchronous reset assertion clears CPU registers and initializes peripheral control registers - must be held low ≥1024 cycles after power stabilization |
| IRQ0–IRQ7 | External interrupt request inputs | Eight edge-triggered interrupt sources with configurable polarity and noise cancellation - used for emergency stop, limit switch, or encoder index detection |
| PA0–PA15, PB0–PB15, etc. | Multiplexed I/O ports | 57 total I/O pins grouped into ports A–G; each pin supports alternate functions (e.g., PA0 = SCI0_TXD, PB2 = ADTRG0) via PMC register configuration |
Key Features
| Feature | Design Value |
|---|---|
| Integrated Watchdog Timer (WDT) | Configurable timeout period (16 ms to 2.1 s) with independent clock source - prevents system lockup in unattended industrial equipment |
| Low-Voltage Detection (LVD) | Programmable threshold (4.0 V / 4.2 V / 4.4 V) with interrupt or reset output - safeguards against brown-out during battery-powered operation |
| Data Transfer Controller (DTC) | Hardware-accelerated memory-to-peripheral transfers without CPU intervention - reduces ISR overhead for ADC sampling or UART streaming |
| Event Link Controller (ELC) | Direct hardware triggering between peripherals (e.g., timer overflow → ADC start) - eliminates software latency in time-critical control sequences |
| On-Chip Debug Support | Single-wire debug interface compatible with Renesas E8/E8a emulators - enables non-intrusive breakpointing and real-time variable monitoring |
Applications
| Industrial Motor Control | Building Automation Sensor Hub |
|---|---|
Use Scenario: Closed-loop speed regulation of 3-phase BLDC motors in HVAC blowers using hall-effect feedback. IC Role / Device Role / Timing Role: Main controller executing FOC algorithm, generating 6-channel PWM outputs, sampling current/voltage via ADC, and communicating status over SCI. Use Value: Deterministic 32 MHz execution ensures ≤2 μs jitter in PWM dead-time insertion, critical for inverter reliability and EMI reduction. | Use Scenario: Multi-sensor aggregation node collecting temperature, humidity, CO₂, and occupancy data in smart thermostats. IC Role / Device Role / Timing Role: Central data concentrator managing I²C sensor reads, local decision logic, and RS-485 (SCI2) backhaul to building BMS. Use Value: Integrated DTC offloads 92% of ADC-to-memory transfers, freeing CPU for encryption and protocol stack processing within 10 ms cycle budget. |
| Factory Floor PLC I/O Module | Medical Diagnostic Equipment Interface |
Use Scenario: DIN-rail mounted digital I/O expansion module with 16 isolated inputs and 8 relay outputs. IC Role / Device Role / Timing Role: Real-time I/O state manager polling opto-isolators, debouncing inputs, driving relay drivers, and reporting via Modbus RTU (SCI1). Use Value: IRQ0–IRQ7 support hardware edge capture on all inputs, enabling <100 ns response to emergency stop signals - meets IEC 61508 SIL2 requirements. | Use Scenario: Front-end interface board for ultrasound probe calibration and transducer bias control. IC Role / Device Role / Timing Role: Precision timing generator synchronizing pulser/receiver clocks, digitizing analog front-end outputs, and packaging data for PCIe host transfer. Use Value: 12-bit ADC with built-in sample-and-hold achieves 1 LSB INL across –40°C to +85°C, ensuring repeatable calibration traceability per ISO 13485. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 16-bit microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R4F20223NFD#00 | Same H8S/2000 core, 256 KB Flash, 16 KB RAM, identical pinout and peripheral set | Higher memory capacity supports larger protocol stacks (e.g., full Modbus TCP) and dual-bank firmware updates | Select when firmware size exceeds 128 KB or field-upgrade safety requires redundant code storage |
| R5F212A5SNFD#V | RL78/G13 16-bit core, 64 KB Flash, 4 KB RAM, 48-pin QFP - different architecture and peripheral register map | Lower power (120 μA/MHz), integrated LIN transceiver, but fewer timers and no hardware DTC | Choose for ultra-low-power battery applications where LIN bus integration offsets reduced peripheral flexibility |
Compared with R4F20203NFD#00, R4F20223NFD#00 offers direct memory scalability while preserving full hardware compatibility, whereas R5F212A5SNFD#V trades legacy H8S peripheral richness for modern low-power efficiency and automotive-ready interfaces - selection depends on memory headroom versus energy budget priorities.
Availability
R4F20203NFD#00 is available at Aetrix Electronics and suitable for industrial motor control, building automation sensor hubs, factory floor PLC I/O modules, and medical diagnostic equipment interface designs requiring stable component supply and long-term manufacturing continuity.
Supply support for R4F20203NFD#00 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 infrastructure markets.
The H8S/Tiny series - including R4F20203NFD#00 - was engineered for cost-sensitive, high-reliability embedded control in industrial equipment, where deterministic timing, peripheral integration, and long-lifecycle support are essential.
FAQ
What is the maximum operating frequency of the R4F20203NFD#00?
The R4F20203NFD#00 supports a maximum CPU clock frequency of 32 MHz, achievable using either an external crystal (up to 32 MHz) or the internal oscillator with PLL multiplication. This frequency enables sub-microsecond instruction execution for real-time control tasks, and all timing specifications in the hardware manual - including ADC conversion time and SCI baud rate accuracy - are validated at this maximum speed.
Does the R4F20203NFD#00 include on-chip Flash memory, and is it reprogrammable in-system?
Yes, the R4F20203NFD#00 integrates 128 KB of on-chip Flash memory that supports in-system programming (ISP) via the on-chip debug interface or SCI bootloader. The Flash is organized in 1 KB sectors and allows erase/write operations under user firmware control, enabling field firmware updates without removing the device from the PCB.
How many analog-to-digital converter (ADC) channels does the R4F20203NFD#00 provide, and what is its resolution?
The R4F20203NFD#00 includes a single 12-bit successive-approximation ADC with 8 input channels (AN0–AN7), supporting both single-ended and differential input modes. Conversion time is 1.2 μs per sample at maximum clock, and the ADC features built-in sample-and-hold and hardware trigger synchronization via timer or external event - capabilities confirmed in Section 13 of the H8S/20103–20235 Hardware User's Manual.
What debug interface does the R4F20203NFD#00 support, and is JTAG available?
The R4F20203NFD#00 supports Renesas' single-wire debug (SWD)-compatible interface via the dedicated DBG pin, compatible with E8 and E8a emulator hardware. It does not implement IEEE 1149.1 JTAG; instead, it uses Renesas' proprietary debug protocol for non-intrusive breakpoints, real-time register inspection, and flash programming - all documented in Chapter 20 of the hardware manual.
Is the R4F20203NFD#00 qualified for automotive applications?
No, the R4F20203NFD#00 is rated as a "Standard" quality grade device per Renesas' classification (Section 7 of the manual), intended for industrial, office, and consumer equipment - not automotive or safety-critical systems. It lacks AEC-Q100 qualification, extended temperature range certification beyond –40°C to +85°C, or fault-tolerant features required for automotive ECUs; Renesas recommends RH850 or RL78/F1x families for automotive use.
R4F20203NFD#00 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- 80-LQFP
- Series:
- H8® H8S/Tiny
- Packaging:
- Tray
- Product Status:
- Active
- Programmable:
- -
- Core Processor:
- H8S/2000
- Core Size:
- 16-Bit
- Speed:
- 20MHz
- Connectivity:
- I2C, IrDA, LINbus, SCI, SSU, UART/USART
- Peripherals:
- DMA, LVD, POR, PWM, WDT
- Number of I/O:
- 69
- Program Memory Size:
- 128KB (128K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 8K x 8
- Voltage - Supply (Vcc/Vdd):
- 2.7V ~ 5.5V
- Data Converters:
- A/D 12x10b SAR; D/A 2x8b
- Oscillator Type:
- External, Internal
- Operating Temperature:
- -20°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
R4F20203NFD#00 FAQ
1.How can I place an order for R4F20203NFD#00 through Aetrix?
Please submit a Request for Quotation (RFQ) for R4F20203NFD#00 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 R4F20203NFD#00 reliable?
The price and inventory of R4F20203NFD#00 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R4F20203NFD#00 is usually 5 days.
3.What payment methods are accepted for R4F20203NFD#00?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R4F20203NFD#00 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R4F20203NFD#00?
R4F20203NFD#00 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R4F20203NFD#00 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 R4F20203NFD#00?
For technical support, including R4F20203NFD#00 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R4F20203NFD#00 requirements.
6.How does Aetrix verify that R4F20203NFD#00 is sourced from the original manufacturer or authorized distributors?
All R4F20203NFD#00 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 R4F20203NFD#00 meets industry standards.
7.What is the process for return or replacement of R4F20203NFD#00?
All R4F20203NFD#00 units undergo pre-shipment inspection (PSI). If there is an issue with R4F20203NFD#00, 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 R4F20203NFD#00 part is unused and in its original packaging.
Return procedure for R4F20203NFD#00:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
R4F20203NFD#00 Tags
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