Renesas HD6473308RCQ10

Overview

HD6473308RCQ10 from Renesas Technology Corp. is a single-chip 16-bit microcontroller based on the H8/300 CPU core, designed for embedded industrial control. It integrates 16 KB on-chip ROM, 512 bytes RAM, 15-byte dual-port RAM, 10-bit A/D converter, serial I/O, multiple timers (16-bit free-running, two 8-bit, two PWM), and general-purpose I/O ports - enabling compact, real-time control in motor drives and PLC modules.

For engineers reviewing the HD6473308RCQ10 datasheet, HD6473308RCQ10 pinout, HD6473308RCQ10 application, or HD6473308RCQ10 equivalent, key selection considerations include its ZTAT™ electrically programmable ROM option, master-slave parallel interface capability, and support for sleep/standby power-down modes in resource-constrained environments.

Technical Context

The HD6473308RCQ10 implements the H8/300 CPU architecture with 16-bit data bus and 24-bit address space, supporting both single-chip and expanded memory modes. Its on-chip peripherals include a 16-bit free-running timer with input capture and output compare, two independent 8-bit timers, and two PWM timers with dedicated duty registers and clock prescalers.

It features a dual-port RAM interface for master-slave communication, asynchronous/synchronous serial I/O with programmable baud rate, and a 10-bit successive-approximation A/D converter with scan mode and external trigger support - all controlled via memory-mapped registers at fixed addresses (e.g., FRC at H'FF92, ADCSR at H'FFE8).

Key Specifications

Pinout & Package

HD6473308RCQ10 is housed in a 100-pin QFP (Quad Flat Package) with 0.65 mm lead pitch, compliant with JEDEC MS-026. Pin functions are defined per the H8/330 hardware manual Section 1.3.

Key Features

Applications

Equivalent & Alternatives

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

Compared with HD6473308RCQ10, HD64F3308FV offers lower unit cost in volume but eliminates field-programmability, while R5F100LEA provides superior power efficiency and integrated debug but demands complete firmware rework and loses master-slave interface capability.

Availability

HD6473308RCQ10 is available at Aetrix Electronics and suitable for industrial motor control, programmable logic controllers, and factory automation sensor nodes requiring stable component supply and long-term obsolescence management.

Supply support for HD6473308RCQ10 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 Technology Corp. was formed in 2003 through the merger of Hitachi and Mitsubishi Electric's semiconductor operations, specializing in microcontrollers, analog, and power devices for industrial and automotive markets.

The H8/330 family, including HD6473308RCQ10, was engineered for deterministic real-time control in resource-constrained embedded systems - emphasizing on-chip integration, low-latency interrupt handling, and robust operation in extended temperature ranges.

FAQ

What is the maximum operating frequency of the HD6473308RCQ10?

The HD6473308RCQ10 operates at a maximum system clock frequency of 10 MHz when using an external crystal or ceramic resonator connected to XTAL1/XTAL2. Its internal clock divider supports multiple prescaler ratios, allowing flexible trade-offs between peripheral timing resolution and CPU throughput. The H8/300 core executes instructions at approximately 10 million instructions per second (MIPS) under optimal conditions, with critical paths verified per the electrical characteristics table in Section 17.2.2 of the H8/330 Hardware Manual.

Does the HD6473308RCQ10 support in-circuit debugging?

The HD6473308RCQ10 does not integrate on-chip debug circuitry such as JTAG or SWD interfaces. Debugging requires external emulators compatible with the H8/300 architecture, like the Renesas E8 or E10 emulator, connected via dedicated debug pins (e.g., BKPT, TRST). The HD6473308RCQ10 relies on breakpoint instructions and serial monitor routines loaded into RAM for basic firmware validation, but lacks real-time trace or hardware watchpoint capabilities found in later-generation MCUs.

What package type and lead count does the HD6473308RCQ10 use?

The HD6473308RCQ10 uses a 100-pin plastic quad flat package (QFP) with 0.65 mm lead pitch, designated by the suffix "RCQ" in the part number. This package conforms to JEDEC standard MS-026 and provides full access to all I/O ports, timer outputs, serial interface pins, and A/D inputs as documented in Section 1.3 of the H8/330 Hardware Manual. Thermal and mechanical dimensions are specified in Renesas' packaging documentation for the RCQ variant.

Can the HD6473308RCQ10's ROM be reprogrammed in-system?

No, the HD6473308RCQ10's on-chip ROM is electrically programmable only during initial manufacturing or programming via external EPROM programmer - it does not support in-system programming (ISP) or in-application programming (IAP). While ZTAT™ enables fast pre-production firmware loading, the ROM contents become immutable after final programming and verification. Firmware updates require physical replacement of the HD6473308RCQ10 or use of external memory mapped via the expanded bus interface.

What is the function of the dual-port RAM in the HD6473308RCQ10?

The 15-byte dual-port RAM in the HD6473308RCQ10 serves as a dedicated, conflict-free communication buffer between the H8/330 MCU and an external master processor. Accessed via PCDR0–PCDR14 registers and controlled by the PCCSR status register, it enables lock-free data exchange using handshaking bits (e.g., BUSY, REQ) - eliminating polling overhead and ensuring deterministic latency in master-slave architectures such as distributed I/O modules or co-processor subsystems.