Renesas HD64F3684GFPV

Overview

HD64F3684GFPV from Renesas Electronics is a 16-bit single-chip microcomputer in the H8/300H Tiny Series, featuring an H8/300H CPU core with instruction set compatibility to the H8/300, 64 KB on-chip ROM, 4 KB RAM, and integrated peripherals including UART (SCI), timer modules (8-bit and 16-bit), and I/O ports. It operates at up to 20 MHz and targets embedded control in industrial equipment and consumer appliances.

For engineers reviewing the HD64F3684GFPV datasheet, HD64F3684GFPV pinout, HD64F3684GFPV application, or HD64F3684GFPV equivalent, key selection criteria include its 80-pin PQFP package, 3.3 V/5 V dual-voltage operation support, on-chip debug interface compatibility with E7/E8 emulators, and qualification for Standard-grade applications per Renesas quality classification.

Technical Context

The HD64F3684GFPV implements the H8/300H CPU architecture with 24-bit address space, supporting both big-endian and little-endian data access modes. Its memory map includes dedicated areas for on-chip ROM (0x000000–0x00FFFF), RAM (0x010000–0x010FFF), and peripheral registers (0x00FF00–0x00FF7F).

It integrates three serial communication interfaces (SCI0–SCI2), four 8-bit timers (T0–T3), one 16-bit timer (T4), and a 10-channel 8-bit A/D converter. Power management includes Sleep, Standby, Subsleep, and Subactive modes controlled via SYSCR1/SYSCR2 and MSTCR1/MSTCR2 registers.

Key Specifications

Pinout & Package

HD64F3684GFPV is housed in an 80-pin PQFP (Plastic Quad Flat Package) with 0.65 mm lead pitch and 14 mm × 20 mm body size. Pin functions are defined per the H8/3687 Group Hardware Manual Rev.5.00 (2005), covering power, ground, clock inputs, reset, I/O ports (P0–P9), peripheral signal assignments (e.g., SCI, timer I/O, A/D inputs), and emulator/debug pins (NMI, P85–P87).

Key Features

Applications

Equivalent & Alternatives

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

Compared with HD64F3684GFPV, HD64F3687GFPV offers expanded memory and peripherals for scalable firmware growth, while HD64F3684FV provides identical functionality in a thermally optimized LQFP variant-neither is pin-compatible without layout verification due to differing thermal pad and land pattern requirements.

Availability

HD64F3684GFPV is available at Aetrix Electronics and suitable for industrial motor control, home appliance firmware, office equipment, and test & measurement instruments requiring stable component supply across long-life production cycles.

Supply support for HD64F3684GFPV 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 H8 Family/H8/300H Tiny Series-including HD64F3684GFPV-is designed for cost-sensitive, resource-constrained embedded control applications where reliability, low power, and mature toolchain support are critical.

FAQ

What is the maximum operating frequency of the HD64F3684GFPV?

The HD64F3684GFPV supports a maximum system clock frequency of 20 MHz, achieved using an external crystal, ceramic resonator, or clock source connected to the EXTAL/XTAL pins. This frequency governs CPU instruction execution, timer resolution, and peripheral baud rates. Operation above 20 MHz is not guaranteed and may cause instability or data corruption in the HD64F3684GFPV.

Does the HD64F3684GFPV include on-chip debug capability?

Yes, the HD64F3684GFPV supports on-chip debugging via the NMI pin and dedicated emulator interface logic compatible with Renesas E7 and E8 in-circuit emulators. When enabled, this allows real-time breakpoint setting, register inspection, and memory read/write without halting system clocks-critical for validating timing-critical firmware in the HD64F3684GFPV.

What power supply voltages does the HD64F3684GFPV support?

The HD64F3684GFPV supports dual-supply operation: VCC1 (core) and VCC2 (I/O) can be independently set to 3.3 V or 5 V, enabling mixed-voltage system design. Alternatively, both supplies may be tied to 5 V for full 5 V I/O tolerance. The HD64F3684GFPV datasheet specifies absolute maximum ratings and recommended operating ranges for each domain to prevent latch-up or parametric drift.

How many analog input channels does the HD64F3684GFPV ADC support?

The HD64F3684GFPV integrates a single 8-bit successive-approximation A/D converter with 10 selectable input channels (AD0–AD9), mapped to specific port pins (e.g., P00–P07, P10–P11). These channels share a common reference voltage (VREFH/VREFL), and conversion is software-triggered or timer-synchronized-enabling flexible analog monitoring in applications like thermal sensing or power supply monitoring using the HD64F3684GFPV.

Is the HD64F3684GFPV qualified for automotive applications?

No, the HD64F3684GFPV is classified as a Standard-grade Renesas product, intended for computers, office equipment, communications gear, audio/video devices, home appliances, and industrial robots-not transportation or safety-critical systems. For automotive use, Renesas offers High Quality-grade derivatives with extended temperature range, AEC-Q100 qualification, and enhanced reliability testing beyond the HD64F3684GFPV specification.