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Renesas R4F20214DFD#U0
- Part No.:
- R4F20214DFD#U0
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 80-LQFP
- Datasheet:
-
R4F20214DFD#U0.pdf
- Description:
- 4-8BIT GENERAL MCU H/300H TINY
- Quantity:
- Payment:
- Shipping:
Inventory:4,595
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Product details
Overview
R4F20214DFD#U0 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 consumption, and industrial-grade reliability. 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 UART, SCI, I²C, PWM timers, and 10-bit ADC with 16 channels.
For engineers reviewing the R4F20214DFD#U0 datasheet, R4F20214DFD#U0 pinout, R4F20214DFD#U0 application, or R4F20214DFD#U0 equivalent, key selection considerations include Flash endurance (10,000 write/erase cycles), operating temperature range (−40°C to +85°C), and support for single-supply 2.7–5.5 V operation in space-constrained industrial control designs.
Technical Context
The R4F20214DFD#U0 implements the H8S/2000 CPU core with 24-bit address space, supporting advanced mode operation and 16-bit data paths. It integrates a Clock Pulse Generator (CPG) with PLL, Low-Voltage Detection (LVD), and a Watchdog Timer (WDT) with independent clock source.
Peripheral integration includes three serial interfaces (SCI ×2, IIC), a 16-bit timer ×3 with capture/compare functionality, and an Event Link Controller (ELC) enabling hardware-triggered DMA transfers without CPU intervention - critical for deterministic real-time response in motor control and sensor monitoring systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | H8S/2000 16-bit CISC core with 24-bit addressing and 32 MHz max frequency |
| Memory | 128 KB on-chip Flash (10K erase/write cycles), 8 KB RAM, no external bus interface |
| ADC | 10-bit successive approximation ADC with 16 input channels and programmable sampling time |
| I/O Pins | 57 CMOS bidirectional I/O pins with selectable pull-up, NMI, and IRQ inputs |
| Timers | Three 16-bit timers (TMR0–TMR2) with input capture, output compare, and PWM generation capability |
| Serial Interfaces | Two asynchronous SCI modules (full-duplex UART), one I²C bus interface (master/slave, 100/400 kbps) |
| Supply Voltage | 2.7 V to 5.5 V single supply; supports low-power modes (HALT, STOP, WAIT) with wake-up via interrupt or reset |
Pinout & Package
Package: 80-pin LQFP (14 mm × 14 mm, 0.65 mm pitch), RoHS-compliant, standard JEDEC footprint.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC, VSS | Power supply and ground | Dual VCC/VSS pairs ensure stable core and I/O rail decoupling; requires local 0.1 µF ceramic capacitors |
| XTAL, EXTAL | Crystal oscillator connection | Supports 1–20 MHz crystal or external clock input; internal oscillator not available |
| RESET | Active-low reset input | Asynchronous, level-sensitive reset; internal pull-up enabled; must be held low ≥100 ns after power stabilization |
| IRQ0–IRQ7 | External interrupt inputs | Edge- or level-sensitive (configurable); support noise cancellation via INCCR register |
| PA0–PA15, PB0–PB15, etc. | General-purpose I/O ports | Individually configurable as input/output; some pins support alternate functions (e.g., TXD0/RXD0, SCL/SDA) |
Key Features
| Feature | Design Value |
|---|---|
| On-chip debug interface | Fully supported via dedicated DBG pin and background debugger (BDM) protocol - enables non-intrusive real-time debugging without ICE |
| Flash programming security | On-chip Flash protection via lock bits prevents unauthorized read/write access to memory contents during field operation |
| Low-voltage detection | LVD circuit monitors VCC and triggers interrupt or reset at user-selectable thresholds (4.0 V / 3.5 V / 2.8 V) |
| Event-driven DMA | Data Transfer Controller (DTC) triggered by peripheral events (e.g., ADC conversion complete, SCI receive) - eliminates CPU polling overhead |
| Real-time interrupt latency | Fixed 7-cycle minimum interrupt response time with priority-based nesting - ensures deterministic timing in safety-critical loops |
Applications
| Industrial PLC I/O Module | Smart Sensor Node |
|---|---|
Use Scenario: Compact remote I/O unit collecting analog/digital signals from field sensors and relaying data via RS-485. IC Role / Device Role / Timing Role: Central controller managing ADC sampling, digital input debouncing, PWM output to actuators, and SCI-based Modbus RTU communication. Use Value: Integrated 16-channel ADC, 57 GPIO, and dual SCI eliminate external interface ICs - reducing BOM count and PCB area by ~30% vs. discrete solutions. | Use Scenario: Battery-powered environmental monitor measuring temperature, humidity, and CO₂ with wireless telemetry. IC Role / Device Role / Timing Role: System-on-chip host executing sensor fusion algorithms, managing ultra-low-power sleep/wake cycles, and driving UART-to-LoRaWAN bridge. Use Value: Sub-µA STOP mode current and programmable wake-up sources (IRQ, LVD, WDT) extend battery life beyond 5 years on two AA cells. |
| Motor Control Drive | Building Automation Panel |
Use Scenario: Brushless DC motor driver with hall-effect feedback, current sensing, and closed-loop speed regulation. IC Role / Device Role / Timing Role: Real-time motion controller generating complementary PWM outputs with dead-time insertion and fault shutdown via I/O port monitoring. Use Value: Three independent 16-bit timers with synchronized PWM outputs enable precise 3-phase gate drive timing - meeting IEC 60730 Class B functional safety requirements. | Use Scenario: DIN-rail mounted HVAC control panel with LCD display, keypad interface, and relay outputs. IC Role / Device Role / Timing Role: Main application processor handling UI rendering, thermostat logic, I²C-connected display driver, and relay sequencing via GPIO. Use Value: On-chip 128 KB Flash stores full firmware plus localized UI assets; 8 KB RAM accommodates multitasking OS scheduler and real-time control tasks concurrently. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 16-bit microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R4F20215DFD#U0 | Same package and pinout; adds 16 KB Data Flash (EEPROM-emulation) and enhanced DTC with 32-channel event mapping | Better suited for firmware-over-the-air (FOTA) updates and high-frequency sensor logging where nonvolatile parameter storage is required | Select R4F20215DFD#U0 when field-upgradable configuration storage or extended DTC flexibility is mandatory |
| R5F565NEADFP | 32-bit RX65N core, 1 MB Flash, 128 KB RAM, Ethernet MAC, USB, and TrustZone-enabled secure boot - not pin-compatible | Targets next-generation connected devices requiring TLS stack, OTA security, and higher throughput; requires PCB redesign | Choose R5F565NEADFP only when migrating to scalable 32-bit architecture with network connectivity and security certification needs |
Compared with R4F20214DFD#U0, the R4F20215DFD#U0 offers drop-in compatibility with added data retention capability, while the R5F565NEADFP delivers architectural headroom for future-proofing but demands full hardware and software requalification.
Availability
R4F20214DFD#U0 is available at Aetrix Electronics and suitable for industrial automation, smart sensor deployment, and motor control applications requiring stable component supply across multi-year production cycles.
Supply support for R4F20214DFD#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 headquartered in Japan, specializing in microcontrollers, analog, power, and SoC solutions for automotive, industrial, and IoT markets.
The H8S/Tiny series - including R4F20214DFD#U0 - was engineered for cost-sensitive, resource-constrained embedded control applications demanding proven reliability, long-term availability, and minimal external component count.
FAQ
What is the maximum operating frequency of the R4F20214DFD#U0?
The R4F20214DFD#U0 supports a maximum CPU clock frequency of 32 MHz when driven by an external crystal (XTAL/EXTAL) or clock source. This frequency is achieved using the on-chip PLL with appropriate divider settings in the SYSCCR register. Operation above 32 MHz is not guaranteed and violates the device's absolute maximum ratings.
Does the R4F20214DFD#U0 include an internal oscillator?
No, the R4F20214DFD#U0 does not include an internal RC oscillator. It requires an external clock source - either a crystal (1–20 MHz) connected to XTAL/EXTAL pins or a square-wave clock signal applied to EXTAL. The absence of an internal oscillator simplifies power domain design but mandates external timing components.
How many ADC channels does the R4F20214DFD#U0 support, and what is its resolution?
The R4F20214DFD#U0 integrates a 10-bit successive approximation ADC with 16 selectable input channels. Conversion time is 1.2 µs per sample under typical conditions (VCC = 5 V, fADCLK = 10 MHz), and the module supports both software-triggered and hardware-triggered (e.g., timer match) conversions.
Is the R4F20214DFD#U0 pin-compatible with other H8S/Tiny devices like R4F20215DFD#U0?
Yes, the R4F20214DFD#U0 is fully pin-compatible with the R4F20215DFD#U0 in the 80-pin LQFP package. Both share identical pin assignments, electrical characteristics, and peripheral mappings - allowing direct substitution where Data Flash or enhanced DTC features are not required.
What debug interface does the R4F20214DFD#U0 support?
The R4F20214DFD#U0 supports Renesas' Background Debugger Mode (BDM) via a dedicated DBG pin and SWD-compatible serial interface. This enables full-featured on-chip debugging - including breakpoint setting, register inspection, and Flash programming - without requiring external JTAG hardware or ICE probes.
R4F20214DFD#U0 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:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
R4F20214DFD#U0 FAQ
1.How can I place an order for R4F20214DFD#U0 through Aetrix?
Please submit a Request for Quotation (RFQ) for R4F20214DFD#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 R4F20214DFD#U0 reliable?
The price and inventory of R4F20214DFD#U0 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R4F20214DFD#U0 is usually 5 days.
3.What payment methods are accepted for R4F20214DFD#U0?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R4F20214DFD#U0 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R4F20214DFD#U0?
R4F20214DFD#U0 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R4F20214DFD#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 R4F20214DFD#U0?
For technical support, including R4F20214DFD#U0 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R4F20214DFD#U0 requirements.
6.How does Aetrix verify that R4F20214DFD#U0 is sourced from the original manufacturer or authorized distributors?
All R4F20214DFD#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 R4F20214DFD#U0 meets industry standards.
7.What is the process for return or replacement of R4F20214DFD#U0?
All R4F20214DFD#U0 units undergo pre-shipment inspection (PSI). If there is an issue with R4F20214DFD#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 R4F20214DFD#U0 part is unused and in its original packaging.
Return procedure for R4F20214DFD#U0:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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