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Renesas R4F20102NFA#U1
- Part No.:
- R4F20102NFA#U1
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 64-LQFP
- Datasheet:
-
R4F20102NFA#U1.pdf
- Description:
- 4-8BIT GENERAL MCU H/300H TINY
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
R4F20102NFA#U1 from Renesas Electronics is a 16-bit single-chip microcontroller in the H8S/Tiny family, designed for embedded control in resource-constrained industrial and consumer systems. It features 64 KB on-chip Flash memory, 4 KB RAM, a 20 MHz max CPU clock, 57 I/O pins, and integrated peripherals including UART, SCI, I²C, 16-bit timers, and 10-bit ADC. It targets low-power motor control and sensor interface applications requiring deterministic real-time response.
For engineers reviewing the R4F20102NFA#U1 datasheet, R4F20102NFA#U1 pinout, R4F20102NFA#U1 application, or R4F20102NFA#U1 equivalent, key selection criteria include Flash endurance (10,000 write/erase cycles), operating voltage range (2.7–5.5 V), -40°C to +85°C industrial temperature grade, and compatibility with H8S/2000-series development tools and firmware libraries.
Technical Context
The R4F20102NFA#U1 implements the H8S/2000 CPU core with 24-bit address space, supporting both advanced and normal operating modes. It integrates a Clock Pulse Generator (CPG) with PLL, Low-Voltage Detection (LVD), and a Watchdog Timer (WDT) with independent clock source.
Peripheral subsystems include three serial interfaces (SCI0–SCI2), a 10-bit 8-channel ADC, four 16-bit timer units (with input capture/output compare), and an Interrupt Controller supporting 63 interrupt sources with priority levels. Memory mapping follows the standard H8S/2000 architecture with dedicated SFR area and configurable wait-state control.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | H8S/2000 16-bit CISC core with 24-bit addressing; enables direct access to up to 16 MB memory space for firmware and data. |
| Flash Memory | 64 KB on-chip Flash with 10,000 write/erase cycles; supports in-application programming (IAP) for field firmware updates. |
| RAM | 4 KB on-chip SRAM; sufficient for real-time stack, peripheral buffers, and small control algorithms without external memory. |
| Max Operating Frequency | 20 MHz CPU clock (via internal PLL or external crystal); delivers ~14.3 MIPS at 20 MHz for deterministic loop execution. |
| I/O Pins | 57 general-purpose CMOS I/O pins with programmable pull-up resistors and noise filtering; supports multi-function pin assignment. |
| Analog Peripherals | 10-bit successive-approximation ADC with 8 input channels and 12.5 µs conversion time; suitable for sensor signal digitization. |
| Operating Voltage | 2.7 V to 5.5 V supply range; allows direct interfacing with 3.3 V or 5 V logic systems without level-shifting circuitry. |
| Temperature Range | -40°C to +85°C industrial grade; qualified for use in factory automation, HVAC controls, and appliance mainboards. |
Pinout & Package
Package: 80-pin LQFP (12 mm × 12 mm, 0.5 mm pitch), RoHS-compliant, moisture sensitivity level 3.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC, VSS | Power supply and ground | Dedicated power/ground pairs per quadrant reduce noise coupling and support stable operation at 20 MHz. |
| XTAL, EXTAL | Crystal oscillator connection | Supports 1–20 MHz external crystal; internal oscillator circuit eliminates need for external capacitors in basic configurations. |
| RESET | Active-low reset input | Asynchronous reset with internal pull-up; accepts external debounced push-button or supervisor IC assertion. |
| PA0–PA15 | Port A I/O | 16-bit bi-directional port with alternate functions including UART TX/RX, SCI clock, and timer I/O capture. |
| AD0–AD7 | ADC input channels | Eight analog inputs mapped to Port A pins; share physical pins with digital I/O but enabled only when ADC module is active. |
| CLKOUT | System clock output | Provides buffered CPU clock or prescaled derivative for trace debugging or synchronizing external logic. |
Key Features
| Feature | Design Value |
|---|---|
| On-chip debug interface | Single-wire background debugger (BDM) support enables non-intrusive real-time tracing and breakpoint setting without JTAG header. |
| Low-power modes | Four power-down modes (HALT, STOP, WAIT, and SLOW) with wake-up via IRQ, LVD, or RTC; reduces active current to <1 µA in HALT mode. |
| Peripheral event linking | Event Link Controller (ELC) allows hardware-triggered peripheral chaining (e.g., ADC end-of-conversion → DMA transfer) without CPU intervention. |
| Watchdog timer independence | WDT uses dedicated on-chip RC oscillator (15 kHz), ensuring reliable timeout even if main clock fails or is disabled. |
| Flash security lock | Read-out protection bit prevents unauthorized firmware extraction via debugger or serial interface after programming. |
| Interrupt prioritization | 63 interrupt sources with 7-level priority encoding and vector table offset register (VOFR) for relocatable ISR placement in Flash or RAM. |
Applications
| Industrial Motor Control | Smart Appliance Interface |
|---|---|
|
Use Scenario: Closed-loop DC brushless motor commutation in HVAC blowers and pump drives. IC Role / Device Role / Timing Role: Real-time PWM generation, Hall sensor input decoding, and current-sense ADC sampling at 10 kHz. Use Value: Integrated 16-bit timers with complementary PWM outputs and dead-time insertion eliminate external gate drivers and reduce BOM count. |
Use Scenario: User interface and sensor management in washing machines and dishwashers. IC Role / Device Role / Timing Role: Keypad scanning, LED display driving, temperature/humidity ADC acquisition, and relay control sequencing. Use Value: 57 GPIOs with programmable pull-ups and noise filters enable direct connection to mechanical switches and analog sensors without external conditioning. |
| Factory Automation I/O Module | Energy Monitoring Sensor Node |
|
Use Scenario: DIN-rail mounted digital I/O expansion unit with isolated inputs and relay outputs. IC Role / Device Role / Timing Role: High-speed opto-isolator input sampling, watchdog-monitored relay driver control, and RS-485 communication via SCI. Use Value: 20 MHz CPU and deterministic interrupt latency (<2.5 µs) ensure sub-millisecond response to fieldbus command packets. |
Use Scenario: Battery-powered electricity metering node with current/voltage sensing and Zigbee/RF communication. IC Role / Device Role / Timing Role: Low-power periodic ADC sampling, real-time clock (RTC) timestamping, and sleep-mode wake-up scheduling. Use Value: Sub-µA HALT mode current and fast wake-up (<5 µs) extend battery life beyond 5 years on coin-cell power. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 16-bit microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R4F20103NFA#U0 | 64 KB Flash, 4 KB RAM, identical pinout and peripheral set; differs only in mask ROM content and minor revision-level errata fixes. | No functional difference in target applications; validated for same industrial temperature and voltage ranges. | Select R4F20103NFA#U0 only if latest silicon revision is required for known erratum mitigation (e.g., ADC offset drift under thermal cycling). |
| R5F21256SDFP#V0 | 16-bit RL78/G13 core, 64 KB Flash, 4 KB RAM, but adds hardware multiplier, 15-channel 12-bit ADC, and enhanced low-power stop modes. | Better suited for applications needing higher analog precision or cryptographic acceleration; requires PCB layout changes due to 64-pin QFP package. | Choose R5F21256SDFP#V0 when migrating to Renesas' newer RL78 platform for extended lifecycle support and improved ADC linearity (±1 LSB INL). |
Compared with R4F20102NFA#U1, R4F20103NFA#U0 offers identical functionality with updated mask ROM, while R5F21256SDFP#V0 provides architectural enhancements at the cost of package incompatibility and toolchain migration effort.
Availability
R4F20102NFA#U1 is available at Aetrix Electronics and suitable for industrial motor control, smart appliance interface, factory automation I/O modules, and energy monitoring sensor nodes requiring stable component supply across multi-year production cycles.
Supply support for R4F20102NFA#U1 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 automotive, industrial, and IoT markets.
The H8S/Tiny series-including R4F20102NFA#U1-is engineered for cost-sensitive, high-reliability embedded control in industrial equipment and white goods, emphasizing low-power operation, robust ESD immunity, and long-term supply assurance.
FAQ
What is the maximum operating frequency of the R4F20102NFA#U1?
The R4F20102NFA#U1 supports a maximum CPU clock frequency of 20 MHz, achievable via its internal PLL when driven by an external crystal or ceramic resonator between 1 MHz and 20 MHz. This frequency delivers approximately 14.3 MIPS performance and is fully supported across the full industrial temperature range (-40°C to +85°C). The R4F20102NFA#U1 datasheet specifies timing margins for all internal peripherals-including timers, ADC, and serial interfaces-at this maximum rate.
Does the R4F20102NFA#U1 include on-chip debug capability?
Yes, the R4F20102NFA#U1 integrates a single-wire background debugger (BDM) interface compliant with Renesas' standard H8S debug protocol. This allows full non-intrusive debugging-including breakpoints, register inspection, and real-time memory access-using Renesas E1 or E20 emulators. No external JTAG header or additional pins are required, as debug signals share the RESET pin during initialization.
What is the Flash memory endurance specification for the R4F20102NFA#U1?
The R4F20102NFA#U1 specifies 10,000 write/erase cycles for its 64 KB on-chip Flash memory, verified per JEDEC standards. Each sector can be erased independently, and the device supports in-application programming (IAP) with built-in erase/write suspend/resume functionality. This endurance rating applies across the full operating voltage (2.7–5.5 V) and temperature (-40°C to +85°C) ranges specified for the R4F20102NFA#U1.
Can the R4F20102NFA#U1 operate from a 3.3 V supply?
Yes, the R4F20102NFA#U1 operates over a supply voltage range of 2.7 V to 5.5 V, making it fully compatible with standard 3.3 V logic systems. At 3.3 V, the maximum guaranteed CPU frequency is 16 MHz (per electrical characteristics tables), and all I/O pins tolerate 5 V inputs regardless of VCC level-enabling safe interfacing with mixed-voltage peripherals without external level shifters.
Is the R4F20102NFA#U1 pin-compatible with other H8S/2000-series MCUs?
The R4F20102NFA#U1 shares the same 80-pin LQFP package and pin assignment with R4F20103NFA#U0 and R4F20203NFA#U0 within the H8S/2010x subgroup. Pin compatibility is confirmed in the Renesas Hardware User's Manual Rev. 3.00 (Sep 2010), Section 1.4 "Pin Assignments". However, it is not compatible with H8S/202xx-series devices that feature different peripheral mappings or I/O counts.
R4F20102NFA#U1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- 64-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:
- 55
- Program Memory Size:
- 96KB (96K 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 8x10b SAR; D/A 2x8b
- Oscillator Type:
- External, Internal
- Operating Temperature:
- -20°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
R4F20102NFA#U1 FAQ
1.How can I place an order for R4F20102NFA#U1 through Aetrix?
Please submit a Request for Quotation (RFQ) for R4F20102NFA#U1 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 R4F20102NFA#U1 reliable?
The price and inventory of R4F20102NFA#U1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R4F20102NFA#U1 is usually 5 days.
3.What payment methods are accepted for R4F20102NFA#U1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R4F20102NFA#U1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R4F20102NFA#U1?
R4F20102NFA#U1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R4F20102NFA#U1 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 R4F20102NFA#U1?
For technical support, including R4F20102NFA#U1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R4F20102NFA#U1 requirements.
6.How does Aetrix verify that R4F20102NFA#U1 is sourced from the original manufacturer or authorized distributors?
All R4F20102NFA#U1 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 R4F20102NFA#U1 meets industry standards.
7.What is the process for return or replacement of R4F20102NFA#U1?
All R4F20102NFA#U1 units undergo pre-shipment inspection (PSI). If there is an issue with R4F20102NFA#U1, 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 R4F20102NFA#U1 part is unused and in its original packaging.
Return procedure for R4F20102NFA#U1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
R4F20102NFA#U1 Tags
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ATTINY4-TSHR
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