ISD4004-12MS

Overview

The ISD4004-12MS is a single-chip voice record/playback solution from Nuvoton's ISD4004 ChipCorder series, designed for 12-minute messaging applications. It operates on a single 3V supply and features an internal oscillator with a typical sampling frequency of 5.3 kHz. The device utilizes high-density multilevel Flash memory to store analog speech samples directly without digitization or compression. Key electrical parameters include a typical playback current of 15 mA, a record current of 25 mA, and a standby current of 1 µA. It supports SPI or Microwire interfaces for control and includes an AutoMute feature for noise attenuation.

Feature Summary

• Direct analog storage technology preserves natural voice quality without digital compression algorithms.
• Integrated AutoMute function minimizes background noise during silence periods in playback mode.
• Non-volatile Flash memory ensures zero-power message retention and supports extensive re-recording cycles.

Applications

• Cellular phones and portable communication devices
• Industrial and commercial messaging systems
• Voice-controlled appliances and automated announcements

Procurement Notes

Verify the specific suffix 'MS' against the official ordering information table to confirm package type and temperature grade. Ensure the selected variant matches the required industrial or commercial operating range. Cross-reference the datasheet revision date to confirm compatibility with current design specifications.

Selection Notes

Select the ISD4004-12MS when a 12-minute recording duration at a 5.3 kHz sampling rate is required. Consider the external clock requirements if precise timing stability beyond the internal oscillator tolerance is necessary for the application environment. Evaluate power consumption constraints against the typical 15 mA playback current.

Part Context

This component belongs to the ISD4004 series, which offers varying durations including 8, 10, 12, and 16 minutes. The series shares a common architecture based on Nuvoton's patented multilevel storage technology, providing a unified interface and pinout across different duration variants within the same family.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Designers should consult Nuvoton's official resources for potential obsolescence management or alternative product recommendations.