Renesas HD6473388FJ10

Overview

HD6473388FJ10 from Hitachi is a 16-bit single-chip microcontroller in the H8/338 Series, featuring an H8/300 CPU core, 48 KB on-chip ROM, 2 KB RAM, integrated 16-bit free-running timer, 8-bit timers, PWM timers, UART-compatible serial interface, 8-channel 10-bit A/D converter, and dual 8-bit D/A converters - deployed in industrial motor control systems requiring deterministic real-time response.

For engineers reviewing the HD6473388FJ10 datasheet, HD6473388FJ10 pinout, HD6473388FJ10 application, or HD6473388FJ10 equivalent, key selection criteria include on-chip memory size, mixed-signal peripheral integration (A/D + D/A), timer architecture (free-running + PWM), power-down modes, and 80-pin QFP package compatibility with legacy H8/300-based control designs.

Technical Context

The HD6473388FJ10 implements the H8/300 CPU core with 16-bit ALU, 32-bit internal data path, and 24-bit address bus supporting up to 16 MB address space. It operates in single-chip mode with on-chip ROM/RAM and supports three power-down states: Sleep, Software Standby, and Hardware Standby - each with distinct wake-up sources and latency.

Its peripheral set includes a 16-bit free-running timer with input capture and output compare, two 8-bit timers with external reset capability, two PWM timers with independent duty control, a full-duplex serial interface configurable for asynchronous/synchronous operation, and analog subsystems with 10-bit A/D (8 channels, 25 μs conversion time) and dual 8-bit D/A outputs.

Key Specifications

Pinout & Package

HD6473388FJ10 is housed in an 80-pin plastic quad flat pack (QFP) with 0.65 mm lead pitch, compliant with JEDEC MS-026. Pin functions are defined per Hardware Manual Section 1.3, including dedicated port pins (P1–P9), timer I/O (TO0–TO3, TI0–TI3), A/D inputs (AN0–AN7), D/A outputs (DA0, DA1), serial interface (RXD, TXD, CKS), and clock/reset control (XIN, XOUT, RES).

Key Features

Applications

Equivalent & Alternatives

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

Compared with HD64F3388FJ10 and HD6413388FJ10, the HD6473388FJ10 offers lowest bill-of-materials cost and highest runtime stability for fixed-function embedded control, trading flash flexibility and prototyping agility for production-grade determinism and reduced external component count.

Availability

HD6473388FJ10 is available at Aetrix Electronics and suitable for industrial motor control, PLC I/O modules, and embedded HVAC systems requiring stable component supply, long-term lifecycle support, and consistent electrical performance across manufacturing lots.

Supply support for HD6473388FJ10 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

Hitachi Ltd. (now part of Renesas Electronics Corporation) was a Japanese multinational conglomerate specializing in industrial systems, power electronics, and semiconductor design - particularly known for its H8 and SH microcontroller families.

The H8/338 Series, including HD6473388FJ10, was engineered for deterministic real-time embedded control in factory automation, motion systems, and building infrastructure - emphasizing on-chip analog integration, low-latency interrupt handling, and robust industrial packaging.

FAQ

What is the maximum operating frequency of the HD6473388FJ10?

The HD6473388FJ10 supports a maximum system clock frequency of 20 MHz when using an external crystal oscillator connected to XIN/XOUT pins. This frequency enables instruction execution at up to 10 MIPS (million instructions per second) under typical conditions, sufficient for real-time control tasks such as 10 kHz PWM generation and 100 Hz closed-loop servo updates. The HD6473388FJ10's clock pulse generator includes internal dividers allowing lower-frequency operation for power-sensitive applications.

Does the HD6473388FJ10 support in-circuit debugging?

The HD6473388FJ10 does not integrate a dedicated on-chip debug interface like JTAG or FINE. Debugging relies on external emulators compatible with the H8/300 architecture, such as the E8 or E10 emulators from Hitachi/Renesas, which connect via the dedicated DBG pin and use background debug mode. The HD6473388FJ10's ROM-based architecture means firmware updates require mask revision, so debug cycles must be completed before final silicon release.

What are the power supply requirements for the HD6473388FJ10?

The HD6473388FJ10 operates from a single 5.0 V ±10% supply (VCC) with separate analog supply pins (AVCC/AVSS) that must be decoupled independently to ensure A/D and D/A accuracy. Total supply current ranges from 35 mA (active at 20 MHz) to less than 10 μA in Hardware Standby mode. The HD6473388FJ10 includes internal voltage regulation for core logic but requires clean, low-noise analog supplies to maintain 10-bit A/D linearity and 8-bit D/A monotonicity.

How many interrupt sources does the HD6473388FJ10 support?

The HD6473388FJ10 supports 63 maskable interrupt vectors plus non-maskable reset and NMI, organized into eight priority levels. Interrupt sources include timer overflows (FRC, TMR0/TMR1, PWM), serial interface events (RXI, TXI, TEI), A/D conversion completion, external pins (IRQ0–IRQ3), and internal peripheral flags. Each vector maps to a unique address in the interrupt vector table located at fixed locations in on-chip ROM, ensuring deterministic latency critical for HD6473388FJ10's use in hard real-time control.

Is the HD6473388FJ10 pin-compatible with other H8/338-series microcontrollers?

Yes, the HD6473388FJ10 shares identical 80-pin QFP (FJ) package and pinout with HD64F3388FJ10 and HD6413388FJ10, enabling direct PCB footprint reuse across mask ROM, Flash, and ROMless variants. All three parts maintain identical peripheral register mapping, memory layout, and I/O electrical characteristics - allowing hardware design consolidation while selecting firmware storage strategy based on production volume and update requirements. This consistency applies specifically to the FJ10 suffix variants.