Renesas R4F24268NFQV

Overview

R4F24268NFQV from Renesas Electronics is a 16-bit single-chip microcontroller in the H8S/2400 Series, designed for embedded control applications requiring integrated peripherals, deterministic real-time response, 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, SCI, TPU, WDT, and DMA controllers.

For engineers reviewing the R4F24268NFQV datasheet, R4F24268NFQV pinout, R4F24268NFQV application, or R4F24268NFQV equivalent, key selection criteria include Flash endurance (10,000 write/erase cycles), operating temperature range (−40°C to +85°C), CAN bus timing compliance, peripheral interrupt latency (<1.5 µs), and support for H8S/2400-series development tools including E8/E8a debuggers and High-performance Embedded Workshop IDE.

Technical Context

The R4F24268NFQV implements the H8S/2400 CPU core with 16-bit data bus and 24-bit address space, supporting both Normal and Advanced operating modes. Its system architecture integrates a Clock Pulse Generator (CPG) with PLL for flexible clock synthesis, a Bus State Controller (BSC) for external memory interface timing, and an Interrupt Controller (INT) with 128 priority levels and vectorized exception handling.

Peripheral subsystems include a 16-bit Timer Pulse Unit (TPU) with 8 channels, a Watchdog Timer (WDT) with windowed operation, two Serial Communication Interfaces (SCI) supporting asynchronous and LIN protocols, and a CAN controller compliant with ISO 11898-1:2003. All peripherals are memory-mapped and accessible via dedicated SFRs with bit-field control.

Key Specifications

Pinout & Package

Package: 100-pin LQFP (14 mm × 14 mm, 0.5 mm pitch), RoHS-compliant, moisture sensitivity level MSL3.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R4F24268NFQV, the R5F24268NFPV sacrifices CAN and I/O for compactness, while the R4F24267NFQV reduces memory to lower cost - neither offers drop-in replacement capability due to functional or capacity gaps.

Availability

R4F24268NFQV is available at Aetrix Electronics and suitable for industrial motor control, automotive body electronics, factory automation I/O terminals, and energy metering gateways requiring stable component supply across multi-year production cycles.

Supply support for R4F24268NFQV 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 R4F24268NFQV, was engineered for deterministic real-time control in harsh industrial environments, emphasizing peripheral integration, long-term availability, and toolchain maturity for legacy and migration-critical designs.

FAQ

What is the maximum operating frequency of the R4F24268NFQV?

The R4F24268NFQV supports a maximum CPU clock frequency of 32 MHz, achieved using the on-chip Clock Pulse Generator (CPG) with PLL multiplier. This frequency is guaranteed across the full −40°C to +85°C industrial temperature range when supplied with 3.3 V ±10%. The R4F24268NFQV's instruction throughput delivers up to 32 MIPS under typical conditions, enabling responsive real-time control loops.

Does the R4F24268NFQV include a hardware CAN controller?

Yes, the R4F24268NFQV integrates a fully compliant CAN 2.0B controller supporting both standard and extended frame formats, programmable bit timing, 32 message object buffers, and automatic retransmission. It requires an external high-speed CAN transceiver (e.g., TJA1042 or SN65HVD230) for physical layer interfacing. The R4F24268NFQV's CAN module operates independently of CPU intervention via dedicated message RAM and status registers.

What development tools are supported for the R4F24268NFQV?

R4F24268NFQV is supported by Renesas' legacy toolchain: High-performance Embedded Workshop (HEW) IDE with C compiler, E8 and E8a in-circuit emulators, and Flash development toolkit (FDK). Debugging uses the on-chip debug interface compatible with IEEE 1149.1 (JTAG). While newer e2 studio does not natively support H8S, community-maintained GCC-H8 toolchains and OpenOCD configurations are verified for R4F24268NFQV firmware builds.

Is the R4F24268NFQV pin-compatible with other H8S/2426 variants?

The R4F24268NFQV shares identical 100-pin LQFP pinout and electrical characteristics with R4F2426R and R4S2426 devices in the same package variant. However, functional differences exist: R4F2426R adds ROMless boot mode and enhanced reset logic, while R4S2426 replaces Flash with mask ROM. Pin compatibility does not imply software or peripheral register compatibility - always verify memory map and SFR layout against the specific device's User's Manual.

What is the Flash endurance specification for the R4F24268NFQV?

The on-chip Flash memory in the R4F24268NFQV is rated for a minimum of 10,000 write/erase cycles per sector, as specified in Renesas' H8S/2426 Group User's Manual (Rev. 5.00, Sep 2012). Endurance testing follows JEDEC JESD22-A117 standards. Wear leveling must be implemented in firmware for applications requiring frequent updates; the R4F24268NFQV provides no hardware wear-leveling engine.