ISD4002-180SYI

Overview

The ISD4002-180SYI is a single-chip voice record and playback IC from the ISD4002 ChipCorder series by Nuvoton Technology Corporation. It utilizes multilevel Flash memory to store analog audio signals directly, providing 180 seconds of recording duration at a sampling frequency of 5.3 kHz. The device operates on a single 3V supply with low power consumption, featuring an internal oscillator and AutoMute noise attenuation. Control is managed via a standard SPI interface, supporting multiple message addressing. It is packaged in a 28-pin SOIC format suitable for portable consumer electronics.

Feature Summary

• Direct analog storage technology preserves natural voice quality without digital compression algorithms.
• Integrated AutoMute feature attenuates background noise during silence periods to improve audio clarity.
• Non-volatile Flash memory ensures zero-power message retention and supports extensive re-recording cycles.
• Flexible microcontroller interface allows full addressability for handling multiple distinct messages.

Applications

• Portable cellular phones and mobile communication devices
• Consumer electronic greeting cards and toys
• Industrial automated voice prompts and announcements

Procurement Notes

Verify the specific suffix 'SYI' against the manufacturer's current ordering guide to confirm package type and temperature grade. Confirm that the industrial temperature range (-40°C to +85°C) aligns with your system requirements. Check for any recent product change notices regarding pinout or electrical characteristics before finalizing the bill of materials.

Selection Notes

Select this model when 180 seconds of continuous audio is required. The 5.3 kHz sampling rate offers a balance between speech intelligibility and storage capacity. Ensure the host microcontroller supports the required SPI protocol and can handle the 1 µA standby current. Consider the external clock requirement if precise timing stability is critical for the application environment.

Part Context

This component belongs to the ISD4002 ChipCorder family, which provides various duration options ranging from 120 to 240 seconds. The '180' designation specifically indicates the 180-second capacity variant. The series is designed for cost-effective voice messaging solutions in battery-powered devices, leveraging proprietary multilevel storage technology for high-density data retention.

Replacement Considerations

The I3900FYI is listed as a manufacturer-recommended alternative. Verify functional compatibility and pin alignment before substitution. No other direct public substitutes are confirmed in the provided documentation.