Renesas R4F24545DVFAU

Overview

R4F24545DVFAU from Renesas Electronics is a 16-bit single-chip microcontroller in the H8S/2454 Group, featuring a 32 MHz max CPU clock, 128 KB on-chip Flash ROM, 8 KB RAM, and integrated peripherals including TPU, SCI, WDT, and I²C-compatible serial interface. It targets industrial control, motor drive, and embedded instrumentation where deterministic real-time response and code density are critical.

For engineers reviewing the R4F24545DVFAU datasheet, R4F24545DVFAU pinout, R4F24545DVFAU application, or R4F24545DVFAU equivalent, this page delivers verified technical context, package-validated pin functions, application-specific timing behavior, and two confirmed alternative MCUs with documented functional alignment and known trade-offs in memory size and peripheral set.

Technical Context

The R4F24545DVFAU implements the H8S/2400 Series CPU core with 16-bit data bus, 24-bit address space, and advanced mode support for extended addressing. It integrates a Clock Pulse Generator (CPG) supporting internal oscillators, external crystals (1–20 MHz), and PLL-based frequency multiplication up to 32 MHz.

Peripheral integration includes a 16-bit Timer Pulse Unit (TPU) with 8 channels, two Serial Communication Interfaces (SCI) supporting asynchronous and clock-synchronous modes, a Watchdog Timer (WDT) with independent clock source, and an I²C-compatible interface for sensor and EEPROM connectivity - all accessible via dedicated I/O ports mapped to specific pins in the LQFP-100 package.

Key Specifications

Pinout & Package

LQFP-100 package with exposed thermal pad (EP), JEDEC MS-026AC compliant, 0.5 mm lead pitch, 14 mm × 14 mm body size, and moisture sensitivity level (MSL) 3 per J-STD-020.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R4F24545DVFAU, R4F24544DVFAU reduces memory resources while maintaining identical real-time peripheral timing and I/O compatibility, whereas R4F24565DVFAU extends memory and adds dual I²C support - enabling scalable firmware architecture without PCB redesign.

Availability

R4F24545DVFAU is available at Aetrix Electronics and suitable for industrial motor control, smart sensor nodes, and programmable logic controller I/O modules requiring stable component supply, long-term lifecycle assurance, and traceable sourcing.

Supply support for R4F24545DVFAU 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 Tokyo, Japan, specializing in microcontrollers, analog, power, and SoC solutions for industrial, automotive, and infrastructure markets.

The H8S/2454 Group, including R4F24545DVFAU, was designed for cost-sensitive, high-reliability industrial control applications demanding deterministic real-time performance, integrated analog interfaces, and long-lifecycle support - not automotive or safety-critical domains.

FAQ

What is the maximum operating frequency of the R4F24545DVFAU?

The R4F24545DVFAU supports a maximum CPU clock frequency of 32 MHz, achieved using the on-chip PLL with an external crystal (1–20 MHz) or internal oscillator. This yields a 31.25 ns instruction cycle time for time-critical control loops. The R4F24545DVFAU's CPG allows dynamic clock switching between internal RC and crystal sources during operation, subject to stabilization wait states defined in the hardware manual.

Does the R4F24545DVFAU include on-chip debug support?

Yes, the R4F24545DVFAU integrates a dedicated on-chip debug interface compliant with Renesas' E10A-USB and E20 debuggers. It supports full-speed real-time debugging, hardware breakpoints, watchpoints, and memory/register access without halting peripheral operation - essential for validating timing-critical firmware on the R4F24545DVFAU without disrupting TPU or SCI behavior.

What analog peripherals are integrated into the R4F24545DVFAU?

The R4F24545DVFAU integrates an 8-channel 10-bit successive-approximation ADC with programmable sample-and-hold timing and internal 2.5 V reference, plus a single 8-bit current-output DAC (DA0) for analog feedback generation. These are directly accessible via PORTA pins and support simultaneous sampling sequences - critical for synchronized current/voltage acquisition in motor control applications using the R4F24545DVFAU.

Is the R4F24545DVFAU pin-compatible with other H8S/2454 Group members?

Yes, the R4F24545DVFAU is fully pin-compatible with all LQFP-100 variants in the H8S/2454 Group, including R4F24544DVFAU and R4F24546DVFAU. Pin assignments, power/ground layout, and peripheral I/O mapping are identical across these variants - enabling hardware reuse and firmware scalability without PCB modification for the R4F24545DVFAU or its siblings.

What is the Flash endurance and data retention specification for the R4F24545DVFAU?

The R4F24545DVFAU specifies 10,000 write/erase cycles for its on-chip Flash memory and 20-year data retention at +85 °C. These values are validated per Renesas' qualification testing and apply to standard erase/write operations using the built-in Flash control module. Firmware update routines for the R4F24545DVFAU must observe minimum 100 µs inter-pulse delays and verify each sector post-write to maintain reliability across the full temperature range.