Renesas HD64F3672FYV

Overview

HD64F3672FYV from Renesas Electronics is a 16-bit single-chip microcomputer in the H8/3672 Group, featuring an H8/300H CPU core with instruction compatibility to H8/300, 32 KB on-chip Flash ROM, 2 KB RAM, and integrated peripherals including UART, timer/counters, and I/O ports. It targets embedded control in industrial equipment and office automation systems requiring deterministic real-time response.

For engineers reviewing the HD64F3672FYV datasheet, HD64F3672FYV pinout, HD64F3672FYV application, or HD64F3672FYV equivalent, key selection considerations include its 32 KB Flash memory size, 2 KB RAM capacity, 20 MHz max operating frequency, support for on-board programming, and compliance with Standard-grade quality classification per Renesas documentation.

Technical Context

The HD64F3672FYV implements the H8/300H CPU architecture with 16-bit data bus and 24-bit address space, supporting both little-endian and big-endian data formats. Its system clock generator accepts crystal resonator (1–20 MHz), ceramic resonator, or external clock input, with internal prescalers enabling multiple peripheral clock domains.

Power management includes Sleep, Standby, and Subsleep modes controlled via SYSCR1/SYSCR2 registers, while Flash memory programming supports boot-mode and user-program-mode erasure/programming with hardware and software protection mechanisms. The device uses CMOS process technology and requires fixed logic levels on all unused input pins.

Key Specifications

Pinout & Package

HD64F3672FYV is housed in a 64-pin LQFP (Low-Profile Quad Flat Package) with 0.5 mm pitch, designed for surface-mount assembly and thermal reliability in industrial environments.

Key Features

Applications

Equivalent & Alternatives

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

Compared with HD64F3672FYV, HD64F3683FV offers direct memory scalability within the same footprint and toolchain, whereas R5F100LEAFB represents a modern low-power alternative requiring full firmware rework but delivering superior energy metrics for portable applications.

Availability

HD64F3672FYV is available at Aetrix Electronics and suitable for industrial PLC I/O modules, office equipment controllers, and test & measurement instruments requiring stable component supply and long-term production continuity.

Supply support for HD64F3672FYV 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 manufacturer headquartered in Japan, specializing in microcontrollers, analog, power, and SoC solutions for industrial, automotive, and consumer markets.

The HD64F3672FYV belongs to the H8 Family/H8/300H Tiny Series, designed for cost-sensitive, resource-constrained embedded control applications where deterministic timing and Flash-based firmware flexibility are essential.

FAQ

What is the maximum operating frequency of the HD64F3672FYV?

The HD64F3672FYV supports a maximum system clock frequency of 20 MHz, achievable using an external crystal resonator, ceramic resonator, or clock source connected to the CLK pin. This frequency determines instruction execution speed and peripheral timing resolution, and must be maintained within the 4.5 V to 5.5 V supply voltage range for guaranteed operation. The HD64F3672FYV datasheet specifies timing parameters based on this 20 MHz limit.

Does the HD64F3672FYV support in-system programming of its Flash memory?

Yes, the HD64F3672FYV supports on-board Flash programming through two distinct modes: boot-mode (activated at reset with specific pin states) and user-program-mode (executed from running application code). Both modes allow sector erase and byte/word programming with hardware and software protection features. This capability enables field firmware updates without removing the HD64F3672FYV from the target board.

What power-saving modes are available on the HD64F3672FYV?

The HD64F3672FYV implements three low-power states: Sleep Mode (CPU halted, peripherals active), Standby Mode (CPU and most peripherals halted, RAM retained), and Subsleep Mode (deep power-down with selected wake-up sources only). Entry and exit are controlled via SYSCR1 and SYSCR2 registers. In Standby Mode, typical current drops to ≤10 µA, making the HD64F3672FYV suitable for intermittently active industrial sensors.

Is the HD64F3672FYV pin-compatible with other H8/367x series microcontrollers?

The HD64F3672FYV shares the same 64-pin LQFP package and pin assignment with HD64F3670FYV and HD64F3683FV, enabling drop-in replacement where memory requirements permit. However, differences in Flash size (32 KB vs. 16 KB vs. 64 KB) and peripheral enablement require verification of register initialization and firmware compatibility before substitution. Always consult the HD64F3672FYV pin function table before migration.

What quality grade is assigned to the HD64F3672FYV per Renesas documentation?

Per Renesas Electronics documentation, the HD64F3672FYV is classified as a "Standard" quality grade device, intended for applications including industrial robots, office equipment, communications gear, and test/measurement instruments. It is not qualified for High Quality (e.g., automotive, medical non-life-support) or Specific (e.g., aerospace, nuclear, life-support) applications without explicit written consent from Renesas. This classification is stated in the HD64F3672FYV hardware manual and applies unless otherwise specified in official Renesas data sheets.