Renesas R4F24279NVFQU

Overview

R4F24279NVFQU from Renesas Electronics is a 16-bit single-chip microcontroller in the H8S/2400 Series, designed for embedded control applications requiring deterministic real-time response, integrated peripherals, and industrial-grade reliability. It features 512 KB on-chip Flash memory, 32 KB RAM, a 32 MHz max CPU clock, 100-pin LQFP package, and supports CAN 2.0B interface via dedicated controller.

For engineers reviewing the R4F24279NVFQU datasheet, R4F24279NVFQU pinout, R4F24279NVFQU application, or R4F24279NVFQU equivalent, key selection criteria include Flash endurance (10,000 write/erase cycles), watchdog timer with windowed mode, TPU-based PWM generation with dead-time insertion, and support for IEEE 802.3-compliant Ethernet MAC via external PHY interface.

Technical Context

The R4F24279NVFQU implements the H8S/2400 CPU core with 32-bit internal data paths, 16-bit external bus interface, and advanced interrupt handling with 128 vector entries. It integrates a programmable clock pulse generator (CPG) supporting multiple PLL configurations, dual watchdog timers (WDT and IWDT), and a 16-bit timer pulse unit (TPU) with 8 independent channels for input capture, output compare, and PWM generation.

Peripheral integration includes a 3-channel serial communication interface (SCI) with LIN support, a 2-channel CAN controller compliant with ISO 11898-1, an 8-channel 10-bit ADC with sample-and-hold, and a bus state controller (BSC) enabling seamless expansion with up to 16 MB of external memory space.

Key Specifications

Pinout & Package

Package: 100-pin LQFP (14 mm × 14 mm, 0.5 mm pitch), thermally enhanced with exposed thermal pad (EP). Pin 1 marked by dot; pin numbering clockwise from top-left corner.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 16-bit microcontroller applications.

Compared with R4F24279NVFQU, R4F24278NVFQU trades memory capacity for lower unit cost without altering timing or peripheral behavior, while R4F24279NVPQU maintains full functional equivalence but requires PCB rework due to different pitch and thermal pad geometry.

Availability

R4F24279NVFQU is available at Aetrix Electronics and suitable for industrial automation, automotive body electronics, and smart metering applications requiring stable component supply, long-term lifecycle assurance, and traceable sourcing.

Supply support for R4F24279NVFQU 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 R4F24279NVFQU-is engineered for deterministic real-time control in harsh environments, emphasizing peripheral integration, functional safety readiness, and long-lifecycle support for industrial and transportation equipment.

FAQ

What is the maximum operating frequency of the R4F24279NVFQU?

The R4F24279NVFQU supports a maximum CPU clock frequency of 32 MHz, achieved via its on-chip PLL with programmable multiplication factor. This frequency is sustained across the full industrial temperature range (−40°C to +85°C) when powered by a stable 3.3 V supply and properly decoupled. The R4F24279NVFQU achieves 16 MIPS performance at this rate, verified by Renesas' published benchmark data.

Does the R4F24279NVFQU support CAN FD?

No, the R4F24279NVFQU implements two CAN 2.0B controllers compliant with ISO 11898-1:2003, supporting bit rates up to 1 Mbps and standard/extended frame formats. It does not support CAN FD features such as flexible data-rate, larger payloads, or CRC enhancements. For CAN FD capability, Renesas recommends the RH850/F1L or RA6T2 families instead of the R4F24279NVFQU.

What debug interface does the R4F24279NVFQU provide?

The R4F24279NVFQU includes a full-featured on-chip debug interface accessible via the 10-pin E10A-USB emulator connector. It supports real-time trace, hardware breakpoints, register and memory inspection, and flash programming without requiring external JTAG adapters. This debug capability is fully integrated into the R4F24279NVFQU silicon and requires no additional external components.

Is the R4F24279NVFQU qualified for automotive applications?

The R4F24279NVFQU is classified as a "Standard" quality grade device per Renesas' documentation and is intended for industrial, office, and communications equipment-not automotive safety-critical systems. While it operates across −40°C to +85°C, it lacks AEC-Q100 qualification, diagnostic coverage, or ASIL-targeted features required for automotive ECUs. Automotive use requires explicit validation and is outside Renesas' recommended scope for the R4F24279NVFQU.

How many ADC channels does the R4F24279NVFQU support, and what is their resolution?

The R4F24279NVFQU integrates an 8-channel, 10-bit successive-approximation ADC with sample-and-hold circuitry. All eight channels (AD00–AD07) are multiplexed onto port P10–P17 and support hardware-triggered conversions with configurable sampling time. The ADC delivers 1.2 μs conversion time and supports both single-shot and continuous scan modes, as confirmed in the H8S/2427 Group User's Manual Rev. 3.00.