Renesas R5F61644AN50FPV

Overview

R5F61644AN50FPV from Renesas Electronics is a 32-bit CISC microcontroller in the H8SX/1644 Group, featuring a 50 MHz maximum CPU clock, 512 KB on-chip Flash memory, and integrated peripherals including TPU, SCI, WDT, and DTC. It operates at 3.0–3.6 V supply voltage and targets industrial control and embedded automation systems requiring deterministic real-time response.

For engineers reviewing the R5F61644AN50FPV datasheet, R5F61644AN50FPV pinout, R5F61644AN50FPV application, or R5F61644AN50FPV equivalent, key selection criteria include its 144-pin LQFP package, 50 MHz core speed, 512 KB Flash with 16 KB RAM, support for single-cycle instruction execution in Advanced Mode, and compliance with Renesas Standard quality grade for industrial equipment.

Technical Context

The R5F61644AN50FPV implements the H8SX CPU core with three operating modes-Normal, Middle, and Advanced-enabling configurable performance vs. code density trade-offs. Its memory subsystem includes 512 KB of on-chip Flash with 2 KB sector erase capability and 16 KB SRAM with wait-state programmability.

Peripheral integration includes a 16-bit Timer Pulse Unit (TPU) with 16 channels, four Serial Communications Interfaces (SCI) supporting asynchronous and clock-synchronous modes, a Data Transfer Controller (DTC) for autonomous memory-to-peripheral transfers, and a Clock Pulse Generator (CPG) supporting PLL-based frequency synthesis from external crystal or oscillator inputs.

Key Specifications

Pinout & Package

Package: 144-pin LQFP (20 mm × 20 mm, 0.5 mm pitch), thermally enhanced with exposed pad (FPV suffix). Pinout conforms to H8SX/1644 Group specification Rev.2.00 (2008).

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F61644AN40FPV, the R5F61644AN50FPV delivers 25% higher deterministic instruction throughput for time-critical control loops; compared with R5F61644AN50FNV, it offers verified thermal performance under continuous 50 MHz operation in standard industrial airflow conditions.

Availability

R5F61644AN50FPV is available at Aetrix Electronics and suitable for industrial PLC modules, motor drive controllers, embedded HMIs, and test instrumentation requiring stable component supply across multi-year production cycles.

Supply support for R5F61644AN50FPV 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 specializing in microcontrollers, analog, power, and SoC solutions for industrial, automotive, and infrastructure markets.

The H8SX/1644 Group-including R5F61644AN50FPV-is designed for deterministic real-time embedded control in industrial automation, factory equipment, and precision instrumentation where reliability, peripheral integration, and long-term supply stability are critical.

FAQ

What is the maximum operating frequency of the R5F61644AN50FPV?

The R5F61644AN50FPV supports a maximum CPU clock frequency of 50 MHz, achievable using the on-chip CPG with PLL enabled and an external 4–10 MHz crystal or clock source. This frequency is validated across the full −40°C to +85°C operating temperature range and 3.0–3.6 V supply voltage, enabling sub-20 ns instruction cycles for hard real-time tasks in the R5F61644AN50FPV.

Does the R5F61644AN50FPV include on-chip Flash memory, and what is its size?

Yes, the R5F61644AN50FPV integrates 512 KB of on-chip Flash memory with 2 KB erasable sectors and read-while-write capability. This Flash is used for program storage, bootloader, and non-volatile parameter retention, eliminating the need for external memory in most industrial control applications built around the R5F61644AN50FPV.

What peripheral functions are integrated into the R5F61644AN50FPV?

The R5F61644AN50FPV integrates a 16-bit Timer Pulse Unit (TPU) with 16 channels, four Serial Communications Interfaces (SCI), a Data Transfer Controller (DTC), a 10-bit 8-channel ADC, a Watchdog Timer (WDT), and a Clock Pulse Generator (CPG) with PLL. These peripherals are fully documented in the H8SX/1644 Group Hardware Manual Rev.2.00 and directly supported by the R5F61644AN50FPV silicon.

What package type and pin count does the R5F61644AN50FPV use?

The R5F61644AN50FPV uses a 144-pin LQFP package (20 mm × 20 mm, 0.5 mm pitch) with an exposed thermal pad (denoted by "FPV" suffix). This package matches the pin assignment defined in the H8SX/1644 Group Hardware Manual and is compatible with standard reflow soldering processes used in industrial electronics manufacturing for the R5F61644AN50FPV.

Is the R5F61644AN50FPV qualified for automotive applications?

No, the R5F61644AN50FPV is classified as a Standard quality grade device per Renesas documentation and is intended for industrial equipment, office automation, and test instrumentation-not automotive or safety-critical systems. Renesas explicitly states that only products designated for automobile applications meet AEC-Q100 requirements, and the R5F61644AN50FPV is not among them.