Renesas HD6473042VF8

Overview

HD6473042VF8 from Renesas Electronics is a 16-bit high-performance microcontroller featuring the H8/300H CPU core, 512 KB on-chip ROM, 32 KB RAM, 16-bit ITU timer, A/D and D/A converters, SCI interface, DMAC, and programmable TPC. It supports seven operating modes with configurable bus width and address space, targeting industrial control and embedded instrumentation systems.

For engineers reviewing the HD6473042VF8 datasheet, HD6473042VF8 pinout, HD6473042VF8 application, or HD6473042VF8 equivalent, key selection considerations include its 16-Mbyte linear address space, dual-converter integration (10-bit A/D + 8-bit D/A), and support for external DRAM refresh via dedicated controller - critical for real-time data acquisition and motor control designs.

Technical Context

The HD6473042VF8 implements the H8/300H CPU core with sixteen 16-bit general-purpose registers and a 32-bit internal data path, enabling efficient execution of compact instruction set operations. Its memory subsystem divides address space into eight independently configurable areas, each supporting selectable data bus width (8/16/32-bit) and access cycle timing.

On-chip peripherals include a 16-bit integrated timer unit (ITU) with input capture, output compare, and PWM generation; a programmable timing pattern controller (TPC) for complex waveform synthesis; and a dedicated refresh controller supporting both DRAM and pseudo-static RAM - all accessible via the same 16-bit external bus interface.

Key Specifications

Pinout & Package

HD6473042VF8 is housed in a 128-pin LQFP (14 mm × 20 mm, 0.5 mm pitch) package. Pin functions are mode-dependent, with shared signals for address/data multiplexing, chip select, wait control, and peripheral I/O.

Key Features

Applications

Equivalent & Alternatives

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

Compared with HD64F3042FV and SH7145R50, the HD6473042VF8 delivers superior analog integration (A/D + D/A), deterministic real-time behavior via TPC and ITU, and lower BOM cost in volume production - making it the preferred choice for fixed-function industrial controllers where firmware stability and mixed-signal capability are paramount.

Availability

HD6473042VF8 is available at Aetrix Electronics and suitable for industrial motor control, embedded data acquisition, and PLC I/O modules requiring stable component supply, long-term lifecycle assurance, and consistent electrical specifications across production batches.

Supply support for HD6473042VF8 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 is a global semiconductor leader specializing in microcontrollers, analog, and power solutions for industrial, automotive, and IoT applications.

The H8/3042 Series was designed specifically for deterministic real-time control in resource-constrained industrial equipment - emphasizing on-chip analog integration, flexible memory interfacing, and hardware-accelerated timing functions.

FAQ

What is the maximum operating frequency of the HD6473042VF8?

The HD6473042VF8 operates at a maximum CPU clock frequency of 20 MHz, delivering approximately 12 MIPS performance. This frequency is supported across all seven operating modes and is validated for continuous operation under industrial temperature range (−40°C to +85°C). The HD6473042VF8 achieves this timing using an external crystal or ceramic resonator connected to the XIN/XOUT pins, with internal PLL circuitry ensuring stable core clock distribution.

Does the HD6473042VF8 support external memory expansion?

Yes, the HD6473042VF8 supports external memory expansion via its 24-bit address bus (A0–A23) and 16-bit data bus (AD0–AD15), with four dedicated chip select outputs (CS0–CS3) and programmable wait-state generation. The bus controller allows independent configuration of bus width, access timing, and wait insertion per memory area - enabling reliable interfacing with SRAM, Flash, DRAM, and peripheral ASICs without external glue logic.

What analog interfaces are integrated into the HD6473042VF8?

HD6473042VF8 integrates a 10-bit successive-approximation A/D converter with 8 input channels and an 8-bit voltage-output D/A converter. The A/D supports software- or timer-triggered conversions with conversion times as low as 10 µs; the D/A provides monotonic output with ±1 LSB integral nonlinearity. Both converters share common reference pins (AVCC/AVSS) and operate independently of CPU load - essential for real-time feedback control in the HD6473042VF8.

How does the HD6473042VF8 handle DRAM refresh?

The HD6473042VF8 includes a dedicated refresh controller that automatically generates RAS-only refresh cycles at programmable intervals (via RTCOR register), supporting both standard DRAM and pseudo-static RAM. It operates independently of CPU activity, uses internal timing resources, and asserts RFSH signal during refresh - eliminating software overhead and guaranteeing deterministic timing. This feature is fully functional in all seven operating modes of the HD6473042VF8.

Is the HD6473042VF8 pin-compatible with other H8/3042 series variants?

Yes, the HD6473042VF8 shares identical pinout and package (128-pin LQFP) with other members of the H8/3042 family including HD64F3042FV and HD6473042FP. All variants use the same signal naming, electrical characteristics, and mechanical footprint - allowing hardware design reuse across mask ROM, flash, and different temperature grade versions. This compatibility extends to all peripheral signal assignments and power/ground pin locations in the HD6473042VF8.