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Renesas R4F24279NVRFQU
- Part No.:
- R4F24279NVRFQU
- Manufacturer:
- Renesas
- Category:
- Microcontrollers
- Package:
- 144-LQFP
- Datasheet:
-
R4F24279NVRFQU.pdf
- Description:
- 16BIT MCU H8S/2427R ROM512K/RAM6
- Quantity:
- Payment:
- Shipping:
Inventory:1,533
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Product details
Overview
R4F24279NVRFQU from Renesas Electronics is a 16-bit single-chip microcontroller in the H8S/2427 group, featuring 512 KB on-chip Flash memory, 32 KB RAM, and integrated peripherals including TPU, SCI, WDT, and CPG. It operates at up to 33 MHz, supports 5 V operation, and targets industrial control and embedded automation applications requiring deterministic real-time response.
For engineers reviewing the R4F24279NVRFQU datasheet, R4F24279NVRFQU pinout, R4F24279NVRFQU application, or R4F24279NVRFQU equivalent, key selection criteria include its 100-pin LQFP package, H8S/2400 CPU core compatibility, Flash endurance (10,000 write/erase cycles), operating temperature range (−40°C to +85°C), and support for external bus expansion with 16-bit data/24-bit address capability.
Technical Context
The R4F24279NVRFQU implements the H8S/2400 Series CPU core with 16-bit ALU, 32-bit internal data paths, and advanced mode addressing. It integrates a Clock Pulse Generator (CPG) supporting multiple clock sources (main, sub, PLL), a 16-bit Timer Pulse Unit (TPU) with 8 channels, and dual Serial Communication Interfaces (SCI) compliant with UART protocols.
Memory architecture includes 512 KB of on-chip Flash with block erase and byte-programmable capability, 32 KB of SRAM, and optional external bus interface supporting wait-state insertion and programmable bus timing. Reset and interrupt handling follow Renesas' standardized vector table layout with priority-controlled IRQs and software standby modes.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | H8S/2400 16-bit CISC core with 32-bit internal data path and advanced addressing modes |
| Max Operating Frequency | 33 MHz - enables deterministic real-time execution with ≤30.3 ns instruction cycle time |
| On-chip Memory | 512 KB Flash (10,000 erase/write cycles) + 32 KB RAM - supports field firmware updates without external storage |
| Supply Voltage | 4.5 V to 5.5 V - compatible with standard 5 V industrial power rails and tolerant of supply ripple |
| Operating Temperature | −40°C to +85°C - qualified for extended industrial environments without derating |
| Package | 100-pin LQFP (14 mm × 14 mm, 0.5 mm pitch) - surface-mount compatible with automated assembly and thermal management |
| Peripheral Set | TPU (8-channel 16-bit timer), 2× SCI, WDT, CPG, INT, BSC - enables motor control, serial comms, and system supervision in one chip |
Pinout & Package
Package: 100-pin LQFP (14 mm × 14 mm, 0.5 mm pitch), thermally enhanced with exposed pad (EPAD) connected to VSS for improved heat dissipation in continuous operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC, VSS | Power supply and ground | Dual VCC/VSS pairs per quadrant ensure stable core and I/O rail decoupling; EPAD must be soldered to PCB ground plane |
| XTAL, EXTAL | Crystal oscillator input/output | Supports 1–10 MHz parallel-resonant crystal; internal oscillator circuit eliminates need for external capacitors in basic configurations |
| RESET | Active-low reset input | Asynchronous, Schmitt-triggered input with internal pull-up; requires ≥100 ns pulse width for reliable reset assertion |
| RD, WR, AS | External bus control | Enable 16-bit data/24-bit address expansion with programmable wait states; AS asserts address strobe for multiplexed bus timing |
| TXD0, RXD0 | SCI0 serial interface | Full-duplex UART-compatible pins with programmable baud rate generator; support RS-232/RS-485 level-shifting via external transceivers |
Key Features
| Feature | Design Value |
|---|---|
| Flash memory with security protection | 512 KB on-chip Flash includes user boot area lock and read-out protection to prevent firmware reverse engineering |
| Timer Pulse Unit (TPU) | 8 independent 16-bit channels support PWM generation, input capture, and quadrature decoding for motor position sensing |
| Serial Communication Interface (SCI) | Dual full-duplex SCI modules with framing error detection, parity control, and programmable stop bits for robust industrial serial links |
| Watchdog Timer (WDT) | Free-running 15-bit counter with windowed refresh capability prevents runaway code while allowing safe software maintenance windows |
| External bus interface | Configurable 16-bit data/24-bit address bus with programmable wait-state insertion supports NOR Flash, SRAM, and peripheral ASIC co-processing |
Applications
| Industrial PLC I/O Module | Motor Drive Control Unit |
|---|---|
Use Scenario: Standalone digital I/O expansion module in modular PLC systems with distributed control architecture. IC Role / Device Role / Timing Role: Central MCU managing 16-channel isolated digital inputs/outputs, local diagnostics, and Modbus RTU over SCI0. Use Value: On-chip 512 KB Flash stores protocol stack and configuration; TPU channels generate precise timing for input sampling and output update cycles. | Use Scenario: Field-oriented control (FOC) subsystem in 3-phase inverter drives for HVAC and pump applications. IC Role / Device Role / Timing Role: Real-time motor control processor executing current-loop PI regulators and space-vector PWM generation at 10 kHz switching frequency. Use Value: TPU's complementary PWM outputs with dead-time insertion and fault input synchronization enable safe gate-driver interfacing without external logic. |
| Building Automation Gateway | Factory Floor Data Logger |
Use Scenario: Protocol translation gateway connecting BACnet MS/TP field devices to Ethernet-based building management systems. IC Role / Device Role / Timing Role: Dual-SCI master node bridging RS-485 BACnet physical layer to TCP/IP stack running on external host processor. Use Value: SCI1 handles BACnet frame assembly/disassembly with hardware parity and framing error detection; internal RAM buffers multi-packet transactions. | Use Scenario: Standalone environmental sensor aggregator logging temperature, humidity, and vibration data to SD card over SPI. IC Role / Device Role / Timing Role: Host controller managing sensor polling via I²C/SCI, timestamping with RTC-equivalent TPU channel, and FAT32 file writes. Use Value: 32 KB RAM accommodates sector-aligned write buffers; Flash endurance supports 10+ years of daily firmware updates and log rotation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 16-bit microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R4F24278NVRFQU | Same package and pinout; reduced Flash (384 KB) and RAM (24 KB); identical peripheral set and CPU core | Suitable for cost-sensitive designs with smaller firmware footprint and fewer runtime variables | Select when application binary size is <350 KB and RAM usage remains under 20 KB |
| R4F24259NVRFQU | Same H8S/2400 core but H8S/2425 variant; 256 KB Flash, 16 KB RAM, no external bus interface, 80-pin LQFP | Targeted at compact, self-contained control nodes without external memory or ASIC interfacing requirements | Choose for space-constrained designs where external bus expansion is unnecessary and firmware fits within 240 KB |
Compared with R4F24279NVRFQU, R4F24278NVRFQU offers identical functionality at lower memory density, while R4F24259NVRFQU sacrifices bus expansion and memory capacity for smaller footprint-making R4F24279NVRFQU optimal for complex, expandable industrial controllers.
Availability
R4F24279NVRFQU is available at Aetrix Electronics and suitable for industrial PLC I/O modules, motor drive control units, building automation gateways, and factory floor data loggers requiring stable component supply across long production lifecycles.
Supply support for R4F24279NVRFQU 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, power, and SoC solutions for industrial, automotive, and infrastructure markets.
The H8S/2400 Series, including R4F24279NVRFQU, was designed for deterministic real-time control in harsh industrial environments-emphasizing reliability, long-term availability, and seamless integration with legacy 5 V systems.
FAQ
What is the maximum operating frequency of the R4F24279NVRFQU?
The R4F24279NVRFQU operates at a maximum frequency of 33 MHz when supplied with 4.5 V to 5.5 V and using the internal PLL with main crystal oscillator. This yields a 30.3 ns instruction cycle time, enabling hard real-time loop execution within strict timing budgets typical of motion control and safety-critical I/O applications. The R4F24279NVRFQU's CPG supports multiple clock source configurations, including direct crystal, sub-oscillator, and PLL-multiplied modes.
Does the R4F24279NVRFQU support external memory expansion?
Yes, the R4F24279NVRFQU supports external memory expansion via its dedicated 16-bit data/24-bit address bus interface with RD, WR, AS, and WAIT signals. It allows connection to standard asynchronous SRAM, ROM, and NOR Flash devices with programmable wait-state insertion (0–15 cycles). This capability is implemented in the Bus State Controller (BSC) peripheral and is fully documented in the H8S/2427 Hardware User's Manual section 1.4.3 and chapter 12.
What is the Flash memory endurance specification for the R4F24279NVRFQU?
The R4F24279NVRFQU features 512 KB of on-chip Flash memory rated for 10,000 write/erase cycles per block under standard industrial conditions (−40°C to +85°C). Each block can be erased independently, and byte-level programming is supported. This endurance rating is specified in the Renesas H8S/2427 Group Data Sheet and validated per JEDEC JESD22-A117 stress testing methodology.
Is the R4F24279NVRFQU pin-compatible with other H8S/2427 variants?
Yes, the R4F24279NVRFQU is pin-compatible with other 100-pin LQFP variants in the H8S/2427 group, including R4F24278NVRFQU and R4F24277NVRFQU. All share identical pin assignments, electrical characteristics, and package dimensions. Differences are limited to internal memory size and feature enablement-verified in the "Pin Assignments" section (1.4.1) of the H8S/2427 Hardware User's Manual Rev.3.00.
What development tools are officially supported for the R4F24279NVRFQU?
Renesas provides official toolchain support for the R4F24279NVRFQU via the High-performance Embedded Workshop (HEW) IDE with C compiler, debugger, and Flash programmer. Third-party support includes IAR Embedded Workbench for H8SX/H8S and GNU-based toolchains with H8/300-H8S target patches. Renesas also offers the E8 emulator and Flash development toolkit specifically validated for R4F24279NVRFQU firmware development and validation.
R4F24279NVRFQU 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 16x16b SAR; D/A 2x8b
- Oscillator Type:
- External, Internal
- Operating Temperature:
- -20°C ~ 75°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
R4F24279NVRFQU FAQ
1.How can I place an order for R4F24279NVRFQU through Aetrix?
Please submit a Request for Quotation (RFQ) for R4F24279NVRFQU 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 R4F24279NVRFQU reliable?
The price and inventory of R4F24279NVRFQU are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for R4F24279NVRFQU is usually 5 days.
3.What payment methods are accepted for R4F24279NVRFQU?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for R4F24279NVRFQU transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for R4F24279NVRFQU?
R4F24279NVRFQU orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your R4F24279NVRFQU 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 R4F24279NVRFQU?
For technical support, including R4F24279NVRFQU datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your R4F24279NVRFQU requirements.
6.How does Aetrix verify that R4F24279NVRFQU is sourced from the original manufacturer or authorized distributors?
All R4F24279NVRFQU 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 R4F24279NVRFQU meets industry standards.
7.What is the process for return or replacement of R4F24279NVRFQU?
All R4F24279NVRFQU units undergo pre-shipment inspection (PSI). If there is an issue with R4F24279NVRFQU, 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 R4F24279NVRFQU part is unused and in its original packaging.
Return procedure for R4F24279NVRFQU:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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