Renesas HD6473297F16V

Overview

HD6473297F16V 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 types (16-bit free-running, dual 8-bit, and watchdog), 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 HD6473297F16V datasheet, HD6473297F16V pinout, HD6473297F16V application, or HD6473297F16V equivalent, key selection criteria include ROM/RAM size, integrated peripherals (SCI, A/D, timers), single-chip operation mode, and PQFP-80 thermal/mechanical compatibility for industrial control and appliance designs.

Technical Context

The HD6473297F16V implements the H8/300H instruction set architecture with 24-bit addressing, supporting single-chip mode (Mode 3) where all program and data memory reside on-die. Its clock system includes internal oscillator circuitry compatible with crystal or ceramic resonator inputs at 1–10 MHz, and a prescaler enabling flexible CPU clock derivation (e.g., øP = ø/1, ø/2, ø/4).

Interrupt handling uses a dedicated controller with 32 vector entries, prioritized hardware interrupts including SCI transmit/receive, A/D conversion completion, and timer overflow events. The 10-bit A/D converter supports up to 8 input channels with sample-and-hold and software-triggered conversion.

Key Specifications

Pinout & Package

HD6473297F16V is housed in an 80-pin PQFP (Plastic Quad Flat Package) with 0.65 mm lead pitch and body size 14 × 14 mm. Thermal pad is not present; power dissipation relies on PCB copper area and ambient convection.

Key Features

Applications

Equivalent & Alternatives

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

Compared with HD64F3297F16V, HD6473297F16V offers lower unit cost and higher reliability in volume production but lacks field-programmability; versus HD6433297F16V, it provides 12 KB additional ROM for larger control algorithms or enhanced safety routines without changing PCB layout.

Availability

HD6473297F16V is available at Aetrix Electronics and suitable for home appliance control, industrial motor drive, building automation sensor nodes, and power supply monitoring units requiring stable component supply across multi-year production cycles.

Supply support for HD6473297F16V 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 embedded markets.

The H8/3297 Series-including HD6473297F16V-was designed for cost-sensitive, high-reliability embedded control applications where single-chip integration, deterministic real-time performance, and long-term mask-ROM stability are critical.

FAQ

What is the maximum operating frequency of the HD6473297F16V?

The HD6473297F16V supports a maximum CPU clock frequency of 16 MHz when configured with øP = ø/1 (prescaler disabled). This yields approximately 10 million instructions per second (MIPS) under typical conditions, sufficient for real-time control loops in motor drives and appliance systems. The actual achievable frequency depends on supply voltage (4.5–5.5 V) and ambient temperature, with full specification guaranteed across the commercial temperature range (0°C to +70°C). HD6473297F16V does not support frequencies above 16 MHz.

Does the HD6473297F16V include an onboard A/D converter, and what are its specifications?

Yes, the HD6473297F16V integrates a 10-bit successive-approximation A/D converter with eight input channels (AD0–AD7, multiplexed with Port 4 pins). It features ±0.5 LSB integral nonlinearity (INL), 1.5 µs conversion time, and supports software-triggered sampling. Reference voltages are AVCC and AVSS, and the module shares a common sample-and-hold circuit. This A/D capability eliminates the need for external converters in applications like temperature sensing or power monitoring, and is fully documented in the H8/3297 Hardware Manual Section 12.

Is the HD6473297F16V pin-compatible with other members of the H8/3297 Series?

Yes, the HD6473297F16V is pin-compatible with other 80-pin PQFP variants in the H8/3297 Series, including HD6433297F16V and HD64F3297F16V. All share identical pin assignments for power, reset, oscillator, I/O ports, SCI, A/D inputs, and interrupt signals. Differences lie solely in internal memory type (mask-ROM vs. flash) and capacity (60 KB vs. 48 KB), allowing direct PCB reuse across firmware variants without layout changes.

What development tools and documentation are available for the HD6473297F16V?

Renesas provides the H8/3297 Hardware Manual (3rd Edition), H8/300 Series Programming Manual, and application notes covering SCI configuration, A/D calibration, and timer usage. Legacy development tools include the E8 emulator and associated H8 family IDEs. While official support has transitioned to newer RH850 and RX families, archived toolchains and documentation remain accessible via Renesas' legacy product portal. HD6473297F16V design resources do not require subscription or licensing fees.

Can the HD6473297F16V operate in single-chip mode, and what does that entail?

Yes, the HD6473297F16V supports single-chip mode (Mode 3), where the entire program executes from on-chip 60 KB mask-ROM and data resides in 2 KB on-chip RAM-no external memory bus is activated. This mode disables address/data bus pins (A0–A19, D0–D15), repurposing them as general I/O or peripheral functions. Single-chip mode reduces system cost, improves noise immunity, and simplifies PCB layout, making HD6473297F16V ideal for cost-sensitive, high-volume embedded controllers.