Renesas HD6473297P16V

Overview

HD6473297P16V from Renesas Technology Corp. is a mask-ROM-based 16-bit microcontroller in the H8/3297 Series, featuring an H8/300 CPU core, 60 KB on-chip ROM, 2 KB RAM, three timer modules (16-bit free-running, dual 8-bit), SCI serial interface, 10-bit A/D converter, and 56 I/O pins in a 80-pin PQFP package. It targets embedded control systems requiring compact, self-contained execution without external memory.

For engineers reviewing the HD6473297P16V datasheet, HD6473297P16V pinout, HD6473297P16V application, or HD6473297P16V equivalent, key selection criteria include ROM size (60 KB), RAM capacity (2 KB), integrated A/D resolution (10-bit), SCI support for asynchronous/synchronous communication, and PQFP-80 thermal and layout compatibility.

Technical Context

The HD6473297P16V implements the H8/300H instruction set with 16-bit data bus and 24-bit address space, supporting single-chip mode operation with internal clock generation via on-chip oscillator circuitry. It integrates a wait-state controller for flexible external bus timing and supports multiple power-down modes including HALT and STOP.

Its interrupt system includes 32 vector sources with priority encoding, and the 16-bit free-running timer provides input capture, output compare, and overflow interrupt capabilities. The SCI module supports both asynchronous and synchronous serial protocols with programmable baud rate generation using the BRR register.

Key Specifications

Pinout & Package

HD6473297P16V is housed in an 80-pin PQFP (Plastic Quad Flat Package) with 0.65 mm lead pitch and 14 mm × 20 mm body dimensions. Thermal performance supports continuous operation at ambient temperatures up to +70°C.

Key Features

Applications

Equivalent & Alternatives

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

Compared with HD64F3297FV and HD64F33296FV, the HD6473297P16V offers lowest unit cost at volume, guaranteed firmware immutability, and elimination of flash programming infrastructure - making it ideal for cost-sensitive, high-reliability embedded systems with finalized software.

Availability

HD6473297P16V is available at Aetrix Electronics and suitable for industrial motor control, building automation panels, factory floor PLC modules, and portable medical diagnostic instruments requiring stable component supply over extended production lifecycles.

Supply support for HD6473297P16V 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 H8/3297 Series - including HD6473297P16V - was designed for cost-effective, high-integration embedded control applications where reliability, deterministic timing, and minimal external components are critical.

FAQ

What is the maximum operating frequency of the HD6473297P16V?

The HD6473297P16V supports a maximum main clock frequency of 20 MHz when driven by an external crystal or ceramic resonator connected to XTAL/EXTAL pins. This yields approximately 10 million instructions per second (MIPS) throughput under typical conditions, sufficient for real-time control loops with sub-100 µs response latency. The internal clock generator includes a prescaler and duty adjustment circuit to maintain stable timing across voltage and temperature variations. HD6473297P16V does not support PLL-based frequency multiplication.

Does the HD6473297P16V include an onboard debug interface?

Yes, the HD6473297P16V supports on-chip debugging via a dedicated H8/300H-compatible interface using pins MD0, MD1, and RES. This allows full in-circuit emulation including breakpoint setting, register inspection, and memory read/write without external JTAG adapters. Debug functionality requires no additional firmware overhead and operates independently of application code execution. HD6473297P16V retains full debug capability even when running from mask-ROM, unlike some flash-based variants that disable debug after security lock.

Can the HD6473297P16V operate without external memory?

Yes, the HD6473297P16V is designed for single-chip operation with 60 KB of on-chip mask-ROM and 2 KB of on-chip RAM, eliminating the need for external program or data memory in most embedded control applications. Its address space mapping and mode control registers (SYSCR, MDCR) configure the device to boot and execute entirely from internal resources. HD6473297P16V supports external bus expansion only optionally - unused in default single-chip mode - reducing PCB complexity and EMI susceptibility.

What type of A/D converter is integrated into the HD6473297P16V?

The HD6473297P16V integrates a 10-bit successive approximation register (SAR) analog-to-digital converter with eight input channels multiplexed onto Port 6 pins (P60–P67). It supports programmable sample-and-hold timing, internal reference voltage (VREF+ and VREF−), and conversion completion interrupts. The ADC achieves ±1 LSB integral nonlinearity and supports conversion times as fast as 12 µs per channel. HD6473297P16V does not include sigma-delta or pipeline architectures - its SAR implementation balances speed, accuracy, and power efficiency for sensor interfacing.

Is the HD6473297P16V pin-compatible with other H8/3297 series members?

Yes, the HD6473297P16V shares identical pin assignment and electrical characteristics with other 80-pin PQFP variants in the H8/3297 family, including HD64F3297FV and HD6433297. All share the same 80-pin footprint, I/O register mapping, and peripheral signal routing - enabling hardware reuse across mask-ROM and flash versions. HD6473297P16V differs only in ROM type (mask vs. flash) and minor internal fuse settings; no PCB redesign is needed when substituting within the same package variant.