ISD5108X

Overview

The ISD5108X is a single-chip voice record and playback device from the Nuvoton ISD5100 ChipCorder series. It provides 4 to 8 minutes of recording duration using patented multilevel storage technology that stores audio signals directly into on-chip nonvolatile Flash memory in uncompressed form. The device supports dual storage of both analog and digital data, allowing for message management features like storing phone numbers or system parameters. It operates on a +2.7V to +3.3V supply voltage with standby current as low as 1µA. Control is managed via a standard I2C serial interface requiring only two control lines.

Feature Summary

• Integrated single-chip solution combining voice recording, playback, and digital data storage without external components.
• Supports flexible audio path configuration for full-duplex conversation recording, voice memos, and answering machine functions.
• Features zero-power message retention in nonvolatile Flash memory with high endurance ratings for analog and digital data.

Applications

• Cellular phones and portable communication devices
• Automotive communications systems
• GPS and navigation systems

Procurement Notes

Verify the specific ordering suffix for the ISD5108X model to confirm package type (SOP-28 or PDIP-28) and temperature grade (Commercial or Industrial). Ensure the selected variant matches the required operating voltage range and logic interface levels for your target application design.

Selection Notes

Select the ISD5108X when a recording duration between 4 and 8 minutes is required. Consider the ISD5104 or ISD5116 if shorter or longer durations are needed respectively. Verify that the host microcontroller supports the I2C protocol for command and data transfer, and ensure power supply constraints align with the device's 2.7V to 3.3V operation.

Part Context

The ISD5108X belongs to the ISD5100 Series, which enhances the previous ISD5000 architecture by adding an I2C interface and digital data storage capabilities. This series is designed to minimize pin counts while providing high-quality voice reproduction through integrated anti-aliasing filters, automatic gain control, and speaker drivers.

Replacement Considerations

The ISD5104 and ISD5116 are direct functional substitutes within the same series, differing primarily in available recording duration. Cross-series replacements may require significant circuit redesign due to differences in interface protocols and memory architectures.