ISD4003-04MPY

Overview

The ISD4003-04MPY is a single-chip voice record/playback device from the Nuvoton ISD4003 ChipCorder series, designed for 4-minute messaging applications. It operates on a single 3V supply with typical operating currents of 15 mA during playback and 25 mA during recording, while standby current is 1 µA. The device features an internal oscillator configured for an 8.0 kHz sampling frequency, resulting in a typical filter pass band of 3.4 kHz. It utilizes high-density multilevel Flash memory for non-volatile storage, supporting 100-year retention and 100,000 record cycles. Control is managed via an SPI interface, and it includes an AutoMute feature for noise attenuation.

Feature Summary

• Direct analog storage technology preserves natural voice quality without digitization or compression artifacts.
• AutoMute function attenuates background noise by 6 dB during silence periods to improve audio clarity.
• Fully addressable memory architecture allows for multiple message handling and management via SPI commands.
• Integrated power-down mode significantly reduces current consumption when the device is idle.

Applications

• Cellular phones and portable communication devices
• Microcontroller-based voice messaging systems
• Industrial equipment with voice alert requirements

Procurement Notes

Verify the specific suffix MPY against the manufacturer's ordering guide to confirm package type and temperature range. Confirm RoHS compliance status as per the latest datasheet revision. Check for end-of-life notices or alternative part recommendations from Nuvoton Technology Corporation before finalizing procurement plans.

Selection Notes

Select this model for applications requiring exactly 4 minutes of recording time at 8.0 kHz sampling rate. Ensure the system design supports a 3V supply voltage and provides an SPI master interface. Consider the 28-SOIC package dimensions for PCB layout constraints. Verify that the required operating temperature range aligns with commercial specifications if industrial ratings are not needed.

Part Context

The ISD4003-04MPY belongs to the ISD4003 series, which offers durations ranging from 4 to 8 minutes. Other variants include the ISD4003-05MSIR (5 minutes) and ISD4003-08M (8 minutes). All series members share the same core architecture, SPI interface, and multilevel Flash storage technology, differing primarily in sampling rates and total recording duration.

Replacement Considerations

Publicly confirmed substitutes include other ISD4003 series variants such as ISD4003-05MSIR or ISD4003-08M if duration flexibility is acceptable. Direct pin-compatible replacements within the same family should be verified against the official Nuvoton replacement list.