ISD4004-08MS

Overview

The ISD4004-08MS is a single-chip voice record/playback solution from the ISD4004 ChipCorder series, designed for 8-minute messaging applications. It operates on a single 3V supply and features an on-chip oscillator, anti-aliasing filter, smoothing filter, AutoMute feature, audio amplifier, and high-density multilevel Flash memory array. The device supports microcontroller-based systems via SPI or Microwire serial interface. Key electrical parameters include a typical operating current of 15 mA during playback and 25 mA during recording, with a standby current of 1 µA. The sampling frequency is 8.0 kHz, providing a typical filter pass band of 3.4 kHz. It offers non-volatile message storage with 100K record cycles and 100-year retention.

Feature Summary

• Single-chip voice record/playback solution with direct analog storage in non-volatile Flash memory
• AutoMute feature provides background noise attenuation during silence periods
• Microcontroller SPI or Microwire Serial Interface for fully addressable message handling
• On-chip oscillator with optional external clock input for precise timing control

Applications

• Cellular phones and portable products requiring messaging capabilities
• Voice memo devices and dictation tools
• Industrial automation equipment with voice alert functions
• Smart home appliances with spoken feedback interfaces

Procurement Notes

Verify the specific suffix 'MS' against the official Nuvoton ordering information to confirm package type and temperature grade. Ensure the design supports the required 3V supply voltage and SPI communication protocol. Check for availability of industrial temperature range variants if operation outside commercial limits is needed.

Selection Notes

Select this component for applications requiring up to 8 minutes of high-quality voice recording with low power consumption. Consider the ISD4004-10M, -12M, or -16M variants if longer duration is needed, noting the trade-off with sampling rate and audio bandwidth. Ensure the system can provide the necessary 3V supply and handle the peak currents during record operations.

Part Context

The ISD4004 series utilizes Nuvoton’s patented multilevel storage technology to store voice signals directly onto Flash memory without digitization or compression. This approach ensures high-fidelity audio reproduction compared to other solid-state solutions. The series includes multiple duration options to suit various application requirements while maintaining a compact single-chip form factor.

Replacement Considerations

Direct replacements within the ISD4004 series include ISD4004-10M, ISD4004-12M, and ISD4004-16M for different duration needs. Verify pin compatibility and software command set consistency when substituting between these variants.