ISD4002-240SYIR

Overview

The ISD4002-240SYIR is a single-chip voice record and playback solution from the ISD4002 ChipCorder series, manufactured by Nuvoton Technology Corporation. It provides 240 seconds of recording duration at a sampling frequency of 4.0 kHz with a typical filter pass band of 1.7 kHz. The device operates on a single 3-volt supply (2.7 V to 3.3 V) and features low-power consumption, including a standby current of 1 µA. It utilizes an SPI interface for control and includes an on-chip oscillator, anti-aliasing filter, smoothing filter, AutoMute feature, audio amplifier, and high-density multilevel Flash memory array. The component is packaged in a 28-SOIC format.

Feature Summary

• Direct analog storage into non-volatile Flash memory without digitization or compression
• AutoMute feature for background noise attenuation during silence periods
• Fully addressable message handling via SPI or Microwire serial interface
• On-chip clock source with optional external clock input for precision

Applications

• Cellular phones and portable messaging devices
• Microprocessor or microcontroller-based system integration
• Multiple message playback applications controlled via SPI port

Procurement Notes

Verify the specific suffix 'SYIR' against official documentation to confirm package type and temperature range specifications. Confirm RoHS compliance status and ensure the ordering information matches the exact part number variant required for the design. Check for any product change notices related to packaging or material composition updates.

Selection Notes

Select this model when a 240-second recording duration is required. Note that the 4.0 kHz sampling rate results in a narrower filter pass band compared to shorter duration variants. Ensure the system design accommodates the specific power-up delay timing associated with this sampling rate. Verify compatibility with the host microcontroller's SPI voltage levels and interface protocol.

Part Context

The ISD4002-240SYIR belongs to the ISD4002 ChipCorder series, which offers durations ranging from 120 to 240 seconds. This series is designed for high-quality, natural voice reproduction using patented multilevel storage technology. The family supports both commercial and industrial temperature ranges depending on the specific package configuration.

Replacement Considerations

Other models within the ISD4002 series, such as ISD4002-120, ISD4002-150, and ISD4002-180, share the same pinout and interface but offer different recording durations and sampling frequencies. Substitution requires verifying that the reduced or increased duration meets the application requirements.