ISD4004-10MSY

Overview

The ISD4004-10MSY is a single-chip voice record/playback device from the ISD4004 series, manufactured by Nuvoton Technology Corporation. It provides approximately 10 minutes of recording duration at a typical sampling frequency of 6.4 kHz. The device utilizes multilevel Flash memory for non-volatile storage and operates on a single 3V supply. 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. It features an SPI interface for control and includes built-in audio amplification and filtering.

Feature Summary

• Direct analog storage technology preserves natural voice quality without digital compression
• Integrated AutoMute feature attenuates background noise during silence periods
• Supports fully addressable multiple message handling via SPI or Microwire interfaces
• Includes on-chip oscillator, anti-aliasing filter, smoothing filter, and audio amplifier

Applications

• Portable consumer electronics requiring voice prompts
• Microcontroller-based messaging systems
• Automotive infotainment and signaling units
• Industrial equipment status announcements

Procurement Notes

Verify the specific suffix 'MSY' against the official Nuvoton datasheet to confirm package type and temperature grade. Ensure the ordering code matches the required industrial or commercial specifications. Cross-reference the manufacturer's latest documentation for any revisions to the pinout or electrical characteristics before finalizing procurement.

Selection Notes

Select this model when a 10-minute recording duration at 6.4 kHz sampling rate is required. Consider the ISD4004-08M, -12M, or -16M variants if different durations are needed. Ensure the system design supports the 3V supply voltage and accommodates the separate analog and digital ground requirements specified in the datasheet.

Part Context

The ISD4004 series represents Nuvoton's (formerly ISD) ChipCorder technology, designed for high-quality, low-power voice applications. This series eliminates the need for external DSP or compression algorithms by storing analog signals directly in Flash memory. The ISD4004-10MSY is part of this family, offering a balance between recording time and audio fidelity for portable devices.

Replacement Considerations

Check for direct substitutes within the ISD4004 series such as ISD4004-08M, ISD4004-12M, or ISD4004-16M based on duration needs. Verify pin compatibility and software register compatibility if replacing with other ISD4000 series parts. No other manufacturers offer identical direct analog storage architecture.