ISD4003-04MSYIR

Overview

The ISD4003-04MSYIR is a single-chip voice record and playback IC from Nuvoton's ChipCorder series, designed for 4-minute messaging applications. It operates on a single 2.7V to 3.3V supply with typical standby current of 1 µA. The device features an internal oscillator or external clock input (XCLK) set to 1024 kHz for an 8 kHz sampling frequency. It utilizes non-volatile multilevel Flash memory for zero-power storage, supporting 100K record cycles and 100-year retention. Control is managed via a standard SPI interface, and it includes AutoMute functionality for noise attenuation during silence.

Feature Summary

• Direct analog storage in non-volatile Flash memory eliminates the need for digitization algorithms.
• AutoMute feature provides background noise attenuation by sensing signal amplitude.
• Fully addressable multiple message handling through SPI control.
• Integrated power-down mode significantly reduces standby power consumption.

Applications

• Cellular phone voicemail and messaging systems
• Portable electronic devices requiring low-power audio recording
• Microcontroller-based industrial control panels
• Automotive infotainment and notification modules

Procurement Notes

Verify the specific suffix 'IR' against the manufacturer's latest datasheet revision to confirm temperature range and packaging details. Confirm RoHS compliance status as specifications are subject to change. Check for end-of-life notices or product change notifications prior to final design approval.

Selection Notes

Select this model for applications requiring exactly 4 minutes of recording time at 8 kHz sampling. Ensure the system voltage remains within the 2.7V to 3.3V range. Consider the SOIC package dimensions if board space is constrained. Verify that the host microcontroller supports the required SPI protocol and timing constraints.

Part Context

This component belongs to the ISD4003 series, which offers varying durations from 4 to 8 minutes. The '04' indicates the 4-minute duration variant. The 'MSY' denotes the 28-SOIC package type. This series is part of Nuvoton's broader portfolio of single-chip voice solutions utilizing patented multilevel storage technology.

Replacement Considerations

The I3900FYI is listed as a manufacturer-recommended alternative. Verify functional compatibility and pinout alignment before substitution. No other direct substitutes are documented in the provided source material.