Renesas HD6473834E

Overview

HD6473834E from Renesas Electronics is a single-chip 16-bit microcontroller in the H8/3834 Series, featuring an H8/300L CPU core, on-chip LCD controller/driver, 14-bit PWM, three-channel serial interface (UART/SIO), five timer modules, and 10-bit A/D converter. It operates at up to 16 MHz and targets embedded systems requiring integrated display control and mixed-signal I/O.

For engineers reviewing the HD6473834E datasheet, HD6473834E pinout, HD6473834E application, or HD6473834E equivalent, this device is selected for cost-sensitive, low-power LCD-based human-interface applications where peripheral integration reduces BOM count and board space - especially in industrial panels, appliance displays, and portable instrumentation.

Technical Context

The HD6473834E implements the H8/300L instruction set with full backward compatibility to the H8/300 architecture and supports multiple power-down modes including Sleep, Standby, Watch, Subsleep, and Subactive. Its clock system includes dual oscillators (main system clock and subclock) with programmable prescalers for flexible timing control across operating modes.

On-chip peripherals include a 40-segment × 8-common LCD driver with internal bias generation, a 10-bit successive-approximation A/D converter with 8 input channels, and three independent serial interfaces supporting UART, clocked synchronous (SIO), and LIN-compatible configurations - all directly memory-mapped and interrupt-capable.

Key Specifications

Pinout & Package

HD6473834E is housed in a 80-pin plastic QFP (Plastic Quad Flat Package) with 0.65 mm lead pitch, compliant with JEDEC MS-026. The package supports surface-mount assembly and provides full access to all on-chip peripherals including LCD segment/common drivers, A/D inputs, serial I/O, and timer capture/compare pins.

Key Features

Applications

Equivalent & Alternatives

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

Compared with HD64F3834F and HD6433834, the HD6473834E provides guaranteed mask-ROM integrity, extended temperature qualification (−40°C to +85°C), and Renesas' Standard quality grade - making it optimal for volume-manufactured industrial HMIs where firmware immutability and thermal robustness are mandatory.

Availability

HD6473834E is available at Aetrix Electronics and suitable for industrial control panels, home appliance displays, portable test instruments, and building automation terminals requiring stable component supply over multi-year production cycles.

Supply support for HD6473834E 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 Corporation is a Japanese semiconductor manufacturer formed in 2010 through the merger of NEC Electronics and Renesas Technology, specializing in microcontrollers, analog, and power devices.

The H8/3834 Series was designed specifically for embedded human-machine interface applications requiring integrated LCD control, mixed-signal I/O, and ultra-low-power operation in space-constrained industrial and consumer equipment.

FAQ

What is the operating voltage range for the HD6473834E?

The HD6473834E operates over a supply voltage range of 4.5 V to 5.5 V at Vcc. This 5 V nominal range ensures compatibility with standard TTL/CMOS logic levels and simplifies power design using common linear regulators or LDOs. Operation outside this range may cause undefined behavior or permanent damage. The HD6473834E does not support 3.3 V operation - no internal voltage regulator or level-shifting circuitry is provided.

Does the HD6473834E support in-circuit debugging?

Yes, the HD6473834E supports in-circuit debugging via the on-chip debug interface compatible with Renesas E8 and E10 emulators. It provides full breakpoint, watchpoint, and register visibility capabilities without requiring external debug hardware beyond the emulator pod and connector. The HD6473834E uses the standard 14-pin E8 debug header layout, and its debug functionality remains active even in Sleep and Standby modes when enabled.

What LCD configuration does the HD6473834E support?

The HD6473834E supports static and multiplexed LCD drive up to 40 segments × 8 commons, with programmable bias voltage (1/2, 1/3, or 1/4) and frame frequency control. It includes internal charge pumps and resistor ladders to generate required LCD voltages, eliminating external bias components. The HD6473834E's LCD controller is fully register-configurable and supports automatic blink and contrast adjustment via software.

Is the HD6473834E RoHS compliant?

Yes, the HD6473834E is RoHS compliant and meets the EU Directive 2011/65/EU requirements for restriction of hazardous substances. Renesas confirms lead-free terminations and halogen-free molding compound for this part. Compliance documentation, including the Certificate of Conformance, is available upon request from Aetrix Electronics or directly from Renesas' product information portal.

What is the maximum A/D conversion rate of the HD6473834E?

The HD6473834E's 10-bit A/D converter achieves a maximum conversion rate of 100 kSPS under optimal conditions (Vcc = 5.0 V, internal clock source, no wait states). Conversion time is fixed at 11.5 µs per sample, including acquisition and conversion phases. The HD6473834E supports both software-triggered and timer-triggered conversions, enabling synchronized sampling for motor control or sensor fusion applications.