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Renesas R4F24279DVFQU
- Part No.:
- R4F24279DVFQU
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 144-LQFP
- Datasheet:
-
R4F24279DVFQU.pdf
- Description:
- H8S/2427 FL-512K, 3V, PLQP0144KA
- Quantity:
- Payment:
- Shipping:
Inventory:3,607
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Product details
Overview
R4F24279DVFQU from Renesas Electronics is a 16-bit single-chip microcontroller in the H8S/2400 Series, featuring 512 KB on-chip Flash memory, 32 KB RAM, and a 32 MHz max CPU clock. It integrates TPU (16-bit timer pulse unit), SCI (serial communication interface), WDT, and interrupt controller for real-time industrial control applications.
For engineers reviewing the R4F24279DVFQU datasheet, R4F24279DVFQU pinout, R4F24279DVFQU application, or R4F24279DVFQU equivalent, key selection criteria include Flash endurance (10,000 write/erase cycles), operating voltage range (3.0 V to 5.5 V), −40°C to +85°C industrial temperature grade, and support for H8S/2400-compatible development tools and debug interfaces.
Technical Context
The R4F24279DVFQU implements the H8S/2427 core architecture with advanced mode support, 24-bit address space, and dual-stack operation (user/system). It supports multiple operating modes (Mode 1–Mode 7) controlled via MDCR and SYSCR registers, enabling flexible memory mapping and peripheral enablement.
Its peripheral set includes four 16-bit TPU channels with PWM output capability, two full-duplex SCIs supporting asynchronous communication up to 1 Mbps, and a watchdog timer with selectable timeout periods (128 ms to 8.2 s). All peripherals are memory-mapped and accessible via SFRs with defined reset states.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | H8S/2400 16-bit CISC core with 32 MHz max operation - enables deterministic real-time execution for control loops under 31.25 ns instruction cycle. |
| Memory | 512 KB on-chip Flash (10K erase/write cycles), 32 KB RAM - sufficient for firmware + data buffers without external memory in compact embedded systems. |
| Supply Voltage | 3.0 V to 5.5 V - compatible with legacy 5 V logic and modern 3.3 V I/O domains; internal regulator supports stable core voltage. |
| Operating Temp | −40°C to +85°C - qualified for industrial automation, motor drives, and factory equipment without derating. |
| Peripherals | TPU (4×16-bit timers), SCI (2×UART), WDT, INT, CPG - provides integrated timing, serial comms, and fault recovery without external ICs. |
| Package | 100-pin LQFP (14 mm × 14 mm, 0.5 mm pitch) - standard surface-mount footprint with dedicated power/ground pins for noise-sensitive analog-peripheral coexistence. |
Pinout & Package
Package: 100-pin LQFP (14 mm × 14 mm, 0.5 mm pitch), RoHS-compliant, moisture sensitivity level 3.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC, VSS | Power supply and ground | Dedicated pairs per quadrant minimize IR drop and switching noise; decoupling required within 10 mm of each VCC/VSS pair. |
| RESET | Active-low reset input | Asynchronous, Schmitt-triggered; requires ≥100 ns pulse width; internal pull-up enables single-resistor external reset circuit. |
| CLK, EXTAL, XTAL | System clock inputs | Supports crystal (1–8 MHz), ceramic resonator, or external clock; CPG generates internal clocks including f/2, f/4, and f/8 for peripherals. |
| PA0–PA15 | Port A general-purpose I/O | Bi-directional with individual direction control; configurable as SCI0/1, TPU0–3, or external interrupt sources (IRQ0–7). |
| SCI0_TXD / SCI0_RXD | Serial interface signals | Full-duplex UART pins supporting 8-N-1 framing; programmable baud rate generator allows precise timing at common rates (9600–115200 bps). |
Key Features
| Feature | Design Value |
|---|---|
| On-chip Flash with security protection | 512 KB user-programmable Flash with 128-byte block lock/unlock and read-out protection - prevents unauthorized firmware extraction in deployed devices. |
| Timer Pulse Unit (TPU) | Four independent 16-bit channels supporting input capture, output compare, PWM generation, and phase counting - enables motor commutation and encoder interfacing without external logic. |
| Interrupt Controller (INT) | 16-level priority, 64-vector table, and IRQ sense control (edge/level) - supports fast response (< 1.5 µs latency) to time-critical events like overcurrent detection. |
| Watchdog Timer (WDT) | Configurable timeout (128 ms–8.2 s), windowed operation, and reset/interrupt mode - ensures system recovery from software hangs while allowing safe periodic refresh windows. |
| Low-power modes | Software standby and wait modes with wake-up on IRQ, SCI receive, or TPU match - reduces active current to < 10 µA, extending battery life in intermittent-monitoring applications. |
Applications
| Industrial Motor Control | Factory Automation I/O Module |
|---|---|
|
Use Scenario: Closed-loop speed and position control of 3-phase BLDC motors in conveyor systems and packaging machinery. IC Role / Device Role / Timing Role: Main controller executing FOC algorithms, generating 6-channel PWM via TPU, and communicating status via SCI to PLC master. Use Value: On-chip 512 KB Flash stores motor profiles and calibration data; 32 MHz CPU delivers sub-100 µs loop times; −40°C to +85°C rating ensures reliability in unconditioned factory environments. |
Use Scenario: Distributed digital input/output expansion node with 16 DI, 8 DO, and Modbus RTU over RS-485. IC Role / Device Role / Timing Role: Protocol handler and I/O scheduler using SCI1 for RS-485 transceiver control and TPU for precise 1 ms scan timing. Use Value: Dual SCI ports enable simultaneous host comms and diagnostics; hardware interrupt prioritization ensures deterministic response to emergency stop signals. |
| Building HVAC Controller | Test & Measurement Equipment |
|
Use Scenario: Standalone chiller plant controller managing compressors, valves, and sensors across CAN and analog interfaces. IC Role / Device Role / Timing Role: Central decision engine reading temperature/humidity sensors, driving solenoid valves via GPIO, and logging data to SPI Flash. Use Value: 32 KB RAM buffers sensor history; wide 3.0–5.5 V supply accommodates 24 V DC field power with local regulation; industrial temp grade avoids thermal shutdown during summer peak loads. |
Use Scenario: Portable handheld tester for relay timing, contact resistance, and insulation integrity in electrical substations. IC Role / Device Role / Timing Role: Precision timing source (TPU input capture) and human-interface processor (LCD + keypad) with battery-backed RTC emulation. Use Value: High-accuracy TPU timestamping (±1 count @ 32 MHz) enables 31.25 ns resolution for relay bounce analysis; low-power standby extends field use to >8 hours on AA batteries. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 16-bit microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R4F24278DVFQU | Same package and pinout; 384 KB Flash, 24 KB RAM - reduced memory capacity but identical peripheral set and timing specs. | Suitable for cost-sensitive designs where firmware size ≤ 384 KB and data buffers ≤ 24 KB. | Select when BOM cost reduction is prioritized over future firmware scalability. |
| R4F24279DVFTU | Identical Flash/RAM and peripherals; differs only in temperature grade (−40°C to +105°C) and tape-and-reel packaging. | Required for under-hood automotive or high-ambient industrial enclosures exceeding +85°C. | Choose for extended temperature operation; otherwise, R4F24279DVFQU is optimal for standard industrial use. |
Compared with R4F24278DVFQU, the R4F24279DVFQU offers 128 KB more Flash and 8 KB more RAM for larger control algorithms and data logging, while R4F24279DVFTU adds extended temperature tolerance at higher procurement cost - making R4F24279DVFQU the balanced choice for mainstream industrial applications.
Availability
R4F24279DVFQU is available at Aetrix Electronics and suitable for industrial motor control, factory automation I/O modules, building HVAC controllers, and portable test equipment requiring stable component supply and long-term lifecycle support.
Supply support for R4F24279DVFQU 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 Japanese semiconductor manufacturer specializing in microcontrollers, analog, and power devices for industrial, automotive, and infrastructure markets.
The H8S/2400 Series - including the R4F24279DVFQU - was designed for deterministic real-time control in resource-constrained industrial equipment, emphasizing robust peripheral integration, Flash reliability, and wide operating conditions.
FAQ
What is the maximum operating frequency of the R4F24279DVFQU?
The R4F24279DVFQU supports a maximum CPU clock frequency of 32 MHz, achievable using an external crystal (up to 8 MHz) with internal PLL multiplication or direct external clock input. This yields a 31.25 ns instruction cycle time, enabling tight real-time control loops in motor and power applications. The R4F24279DVFQU's CPG module ensures stable clock distribution to all peripherals at this rate.
Does the R4F24279DVFQU include on-chip debug support?
Yes, the R4F24279DVFQU integrates an on-chip debug interface compliant with Renesas' E10A-USB and E20 emulators. It supports full-speed background debugging, breakpoint setting, and real-time register/memory inspection without halting peripheral operation. This capability is built into the silicon and requires no external debug hardware beyond the standard Renesas debug probe.
What is the Flash endurance specification for the R4F24279DVFQU?
The R4F24279DVFQU specifies 10,000 write/erase cycles for its 512 KB on-chip Flash memory, validated per JEDEC JESD22-A117. Each sector can be independently erased, and the Flash controller includes error detection logic. This endurance supports field firmware updates in industrial gateways and controllers where 5–10 years of in-service reprogramming is required.
Can the R4F24279DVFQU operate from a 3.3 V supply?
Yes, the R4F24279DVFQU operates across a 3.0 V to 5.5 V supply range, making it fully compatible with 3.3 V systems. At 3.3 V, it maintains full 32 MHz operation and all peripheral functionality, including TPU timing accuracy and SCI baud rate generation. Internal voltage regulation ensures consistent core performance regardless of supply voltage within spec.
How many serial communication interfaces does the R4F24279DVFQU support?
The R4F24279DVFQU integrates two independent Serial Communication Interfaces (SCI0 and SCI1), each supporting full-duplex asynchronous communication (UART mode) with programmable baud rates up to 1 Mbps. Both SCIs feature separate transmit/receive shift registers, status flags, and interrupt capability - enabling simultaneous host communication and diagnostic port usage without resource contention.
R4F24279DVFQU Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- 144-LQFP
- Series:
- H8® H8S/2400
- Packaging:
- Tray
- Product Status:
- Active
- Programmable:
- -
- Core Processor:
- H8S/2600
- Core Size:
- 16-Bit
- Speed:
- 33MHz
- Connectivity:
- EBI/EMI, I2C, IrDA, SCI, SmartCard, SPI, SSU, UART/USART
- Peripherals:
- DMA, POR, PWM, WDT
- Number of I/O:
- 98
- Program Memory Size:
- 512KB (512K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 64K x 8
- Voltage - Supply (Vcc/Vdd):
- 3V ~ 3.6V
- Data Converters:
- A/D 16x10b SAR; D/A 2x8b
- Oscillator Type:
- External
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
R4F24279DVFQU FAQ
1.How can I place an order for R4F24279DVFQU through Aetrix?
Please submit a Request for Quotation (RFQ) for R4F24279DVFQU 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 R4F24279DVFQU reliable?
The price and inventory of R4F24279DVFQU are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R4F24279DVFQU is usually 5 days.
3.What payment methods are accepted for R4F24279DVFQU?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R4F24279DVFQU transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R4F24279DVFQU?
R4F24279DVFQU orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R4F24279DVFQU 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 R4F24279DVFQU?
For technical support, including R4F24279DVFQU datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R4F24279DVFQU requirements.
6.How does Aetrix verify that R4F24279DVFQU is sourced from the original manufacturer or authorized distributors?
All R4F24279DVFQU 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 R4F24279DVFQU meets industry standards.
7.What is the process for return or replacement of R4F24279DVFQU?
All R4F24279DVFQU units undergo pre-shipment inspection (PSI). If there is an issue with R4F24279DVFQU, 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 R4F24279DVFQU part is unused and in its original packaging.
Return procedure for R4F24279DVFQU:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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