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Renesas R4F20214NFD#20
- Part No.:
- R4F20214NFD#20
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 80-LQFP
- Datasheet:
-
R4F20214NFD#20.pdf
- Description:
- IC MCU 16BIT 192KB 80LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:2,045
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Product details
Overview
R4F20214NFD#20 from Renesas Electronics is a 16-bit single-chip microcontroller in the H8S/Tiny series, 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 3-channel 16-bit timers, 8-channel 10-bit ADC, UART, I²C, and watchdog timer.
For engineers reviewing the R4F20214NFD#20 datasheet, R4F20214NFD#20 pinout, R4F20214NFD#20 application, or R4F20214NFD#20 equivalent, key selection criteria include Flash endurance (10⁴ write/erase cycles), operating voltage range (2.7–5.5 V), industrial temperature grade (−40°C to +85°C), and compatibility with H8S/20215-series development tools and firmware libraries.
Technical Context
The R4F20214NFD#20 implements the H8S/2000 CPU core with 24-bit address space, supporting advanced mode for extended addressing and enhanced interrupt handling. Its peripheral set includes a programmable 8-channel 10-bit ADC with sample-and-hold, three independent 16-bit timer/counters with compare match and input capture, and dual serial interfaces (SCI and IIC) supporting asynchronous and synchronous communication.
Power management is handled via the Clock Pulse Generator (CPG), enabling multiple low-power modes (HALT, STOP, and WAIT) with wake-up capability from external interrupts or internal events. The device uses a single-supply 2.7–5.5 V operation and integrates low-voltage detection (LVD) with selectable trip points (4.2 V, 3.8 V, 3.3 V, or 2.7 V) for safe brown-out recovery.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | H8S/2000 16-bit CISC core with 24-bit address bus and 32 MHz max frequency |
| Memory | 128 KB on-chip Flash (10⁴ erase/write cycles), 8 KB RAM, no external bus interface |
| ADC | 8-channel 10-bit successive-approximation ADC with 1.2 μs conversion time and internal reference |
| Timers | Three 16-bit timers: two with input capture/output compare, one with PWM output capability |
| Serial Interfaces | One SCI (UART-compatible), one IIC (standard/fast-mode up to 400 kbps) |
| I/O Pins | 57 general-purpose CMOS I/O pins with configurable pull-up, open-drain, and slew-rate control |
| Operating Range | 2.7–5.5 V supply voltage; −40°C to +85°C ambient temperature (Industrial grade) |
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 | Dual VCC/VSS pairs ensure stable core and I/O rail decoupling; supports separate analog ground connection (AVSS) |
| XTAL, EXTAL | Crystal oscillator inputs | Supports 1–20 MHz external crystal or ceramic resonator; internal oscillator not available |
| RESET | Active-low reset input | Asynchronous, Schmitt-triggered input with internal pull-up; initiates power-on reset sequence and clears all registers |
| IRQ0–IRQ7 | External interrupt inputs | Eight dedicated edge-sensitive interrupt pins with individually configurable sense control (rising/falling/both) |
| AD0–AD7 | Analog input channels | Eight dedicated analog input pins shared with port P1; support simultaneous sampling only on AD0–AD3 |
| TXD0, RXD0 | SCI0 serial data | Full-duplex UART interface with programmable baud rate generator and framing error detection |
| SCL, SDA | IIC bus interface | Open-drain bidirectional pins with internal weak pull-up; support master/slave mode and 7-bit addressing |
Key Features
| Feature | Design Value |
|---|---|
| On-chip debug interface | Single-wire background debugger (BDM) support enables non-intrusive flash programming and real-time variable monitoring without halting CPU |
| Low-voltage detection | Configurable LVD with four threshold options and interrupt/warning output for graceful shutdown or state save before brown-out |
| Event link controller (ELC) | Hardware-triggered peripheral chaining allows timer overflow to automatically start ADC conversion-eliminates CPU overhead and jitter |
| Peripheral I/O mapping | PMC register dynamically remaps peripheral functions (e.g., SCI, IIC, timers) to alternate GPIO pins-enables flexible PCB layout without signal conflict |
| Watchdog timer | Independent WDT with 16-bit free-running counter and selectable timeout (1 ms–2.1 s); resets on timeout unless refreshed within window |
Applications
| Industrial Motor Control | Smart Sensor Node |
|---|---|
Use Scenario: Closed-loop speed regulation of BLDC fans using hall-effect feedback and PWM-driven gate drivers. IC Role / Device Role / Timing Role: Main system controller executing PID loop at 10 kHz, managing ADC sampling, PWM generation, and fault monitoring. Use Value: Integrated 16-bit timers with dead-time insertion and ADC trigger synchronization reduce external component count and improve timing determinism. | Use Scenario: Battery-powered environmental sensor hub collecting temperature, humidity, and CO₂ via analog and digital sensors. IC Role / Device Role / Timing Role: Low-power coordinator managing sensor polling, data aggregation, and wireless transmission scheduling. Use Value: HALT/STOP power modes achieve <1.5 μA standby current; LVD ensures reliable shutdown before battery depletion. |
| Home Appliance UI Controller | Factory Automation I/O Module |
Use Scenario: Touch-button and LED display interface for microwave oven control panel with safety interlock monitoring. IC Role / Device Role / Timing Role: Dedicated UI processor handling button debouncing, LED dimming, buzzer tone generation, and door switch validation. Use Value: 57 GPIOs support direct matrix keypad scanning and multi-segment LED drive; built-in PWM eliminates external LED driver ICs. | Use Scenario: DIN-rail mounted digital I/O expansion module converting PLC-level signals to Modbus RTU over RS-485. IC Role / Device Role / Timing Role: Protocol bridge translating discrete inputs/outputs into serial Modbus frames with CRC validation. Use Value: SCI with automatic break detection and framing error handling simplifies robust RS-485 implementation; ELC links input change to immediate interrupt wakeup. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 16-bit microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R4F20215NFD#20 | Same package and pinout; adds 16 KB data flash (EEPROM emulation) and enhanced DTC with scatter-gather support | Required for applications needing nonvolatile parameter storage or high-bandwidth peripheral-to-memory transfers | Select R4F20215NFD#20 if field-upgradable calibration data or firmware-over-the-air updates are needed |
| R5F21214NFD#20 | Successor in RL78/G13 family; 16-bit core, lower active current (120 μA/MHz), but reduced Flash (96 KB) and no hardware event linker | Better suited for ultra-low-power battery devices where deterministic peripheral chaining is not critical | Choose R5F21214NFD#20 when energy efficiency outweighs real-time peripheral coordination requirements |
Compared with R4F20214NFD#20, R4F20215NFD#20 offers drop-in upgrade path with added data retention capability, while R5F21214NFD#20 trades deterministic hardware event linking for superior power efficiency-making the former ideal for industrial control upgrades and the latter for long-life sensor nodes.
Availability
R4F20214NFD#20 is available at Aetrix Electronics and suitable for industrial motor control, smart sensor node, home appliance UI, and factory automation I/O modules requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for R4F20214NFD#20 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 R4F20214NFD#20-is engineered for cost-sensitive, real-time embedded control applications demanding high integration, industrial-grade reliability, and mature toolchain support.
FAQ
What is the maximum operating frequency of the R4F20214NFD#20?
The R4F20214NFD#20 supports a maximum CPU clock frequency of 32 MHz when driven by an external crystal oscillator connected to XTAL/EXTAL pins. This frequency is achievable across the full industrial temperature range (−40°C to +85°C) and supply voltage range (2.7–5.5 V). Internal clock dividers allow programmable reduction to lower frequencies for power optimization, and the device does not include an internal RC oscillator-external timing source is mandatory.
Does the R4F20214NFD#20 include on-chip debug capability?
Yes, the R4F20214NFD#20 integrates a single-wire background debugger (BDM) interface compliant with Renesas' standard debug protocol. This allows full non-intrusive flash programming, real-time register and memory inspection, and breakpoint-based execution control without requiring dedicated debug pins beyond the standard reset and clock lines. The BDM interface is supported by Renesas E1/E20 emulators and CS+ IDE, enabling rapid firmware development and field diagnostics for R4F20214NFD#20-based systems.
What are the ADC specifications of the R4F20214NFD#20?
The R4F20214NFD#20 features an 8-channel, 10-bit successive-approximation ADC with a typical conversion time of 1.2 μs per sample. It supports internal reference voltage (VREF = AVCC) or external reference, programmable sample-and-hold duration, and hardware trigger sources including timer overflow and external pins. Channel selection and conversion control are managed via the ADCSR and ADCR registers, and results are stored in 16-bit aligned data registers with optional left/right justification.
Is the R4F20214NFD#20 pin-compatible with other H8S/202xx devices?
The R4F20214NFD#20 is pin-compatible with R4F20215NFD#20 and R4F20235NFD#20 in the same 80-pin LQFP package, sharing identical pin assignments for power, reset, clocks, I/O, and peripheral signals. However, it is not compatible with R4F20203 or R4F20223 due to differing peripheral sets and I/O counts. Pin compatibility with R4F20215NFD#20 enables seamless migration to added data flash functionality without PCB redesign.
What power-saving modes does the R4F20214NFD#20 support?
The R4F20214NFD#20 provides three hardware-supported low-power modes: WAIT (CPU halted, peripherals active), STOP (CPU and most peripherals halted, real-time clock and LVD active), and HALT (all clocks stopped except for external reset and LVD). Wake-up is possible from any enabled interrupt source-including external pins, timer matches, or ADC completion-in all modes. Typical HALT-mode current consumption is 0.8 μA at 3.3 V and 25°C, making R4F20214NFD#20 suitable for battery-backed applications requiring infrequent wake-up events.
R4F20214NFD#20 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:
- 192KB (192K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 12K 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:
R4F20214NFD#20 FAQ
1.How can I place an order for R4F20214NFD#20 through Aetrix?
Please submit a Request for Quotation (RFQ) for R4F20214NFD#20 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 R4F20214NFD#20 reliable?
The price and inventory of R4F20214NFD#20 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R4F20214NFD#20 is usually 5 days.
3.What payment methods are accepted for R4F20214NFD#20?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R4F20214NFD#20 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R4F20214NFD#20?
R4F20214NFD#20 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R4F20214NFD#20 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 R4F20214NFD#20?
For technical support, including R4F20214NFD#20 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R4F20214NFD#20 requirements.
6.How does Aetrix verify that R4F20214NFD#20 is sourced from the original manufacturer or authorized distributors?
All R4F20214NFD#20 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 R4F20214NFD#20 meets industry standards.
7.What is the process for return or replacement of R4F20214NFD#20?
All R4F20214NFD#20 units undergo pre-shipment inspection (PSI). If there is an issue with R4F20214NFD#20, 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 R4F20214NFD#20 part is unused and in its original packaging.
Return procedure for R4F20214NFD#20:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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