ISD4004-08MPY

Overview

The ISD4004-08MPY is a single-chip voice record/playback device from the ISD ChipCorder series, designed for 8-minute messaging applications. It operates on a single 3V supply and features low-power consumption with typical operating currents of 15 mA during playback and 25 mA during recording, alongside a standby current of 1 µA. The device utilizes high-density multilevel Flash memory to store analog speech samples directly without digitization or compression, ensuring high-quality natural voice reproduction. Control and addressing are managed via a Serial Peripheral Interface (SPI) or Microwire interface, minimizing pin count. Key specifications include an 8 kHz sampling frequency, a filter pass band of 3.4 kHz, and non-volatile storage capable of retaining messages for up to 100 years with 100,000 record cycles.

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.
• Fully addressable memory architecture supports multiple message handling through SPI or Microwire interfaces.
• Non-volatile Flash memory ensures zero-power message retention and high endurance for repeated recording.

Applications

• Cellular phones and portable communication devices requiring voice messaging
• Industrial control systems needing automated voice prompts
• Consumer electronics utilizing simple voice interaction interfaces

Procurement Notes

Verify the specific suffix 'PY' against official Nuvoton documentation to confirm package type and temperature grade. Ensure the ordering code matches the required 8-minute duration variant. Confirm lead times and availability through authorized distributors as supply chain conditions may vary. Cross-reference the datasheet revision date to ensure compatibility with current design requirements.

Selection Notes

Select this component when an 8-minute recording duration at 8 kHz sampling rate is required. Consider the industrial temperature range if operation exceeds commercial limits. Evaluate the SPI interface compatibility with the host microcontroller. Assess power constraints given the 15 mA playback current. Verify that the 3V supply voltage aligns with the system design.

Part Context

The ISD4004 series represents Nuvoton's legacy voice recording solutions, succeeding earlier ISD models. It is part of the broader ISD ChipCorder family, which includes variants with different durations such as 10, 12, and 16 minutes. This series is known for its simplicity in integration and high audio fidelity due to direct analog storage methods.

Replacement Considerations

ISD4004-10M, ISD4004-12M, and ISD4004-16M are compatible within the same series but offer different recording durations. Check datasheet specifications for pinout and electrical parameter similarities before substitution.