ISD2361SYI

Overview

The ISD2361SYI is a playback-only Digital ChipCorder IC based on flash storage, featuring built-in 2Mbit non-volatile memory and no external flash support. It delivers up to 64 seconds of audio duration at 8kHz/4-bit ADPCM. The device integrates a Class D speaker driver capable of 1W output into an 8Ω load at 5.5V. It supports SPI mode or standalone GPIO trigger operation with eight selectable sampling frequencies ranging from 4kHz to 32kHz. Audio compression includes µ-Law, Differential µ-Law, PCM, and Enhanced ADPCM formats. Operating voltage spans 2.4V to 5.5V within an industrial temperature range of -40°C to 105°C.

Feature Summary

• Supports concurrent playback of up to three channels with independent counters for micro-management of Voice Macro execution.
• Enables standalone operation through GPIO triggers configured with customizable Voice Macro scripts.
• Integrates flexible Voice Macro commands including conditional branching, silence generation, and time counters.
• Provides hardware checksum calculation for internal memory verification and overheat prevention mechanisms.

Applications

• Standalone voice prompts triggered by GPIO buttons
• SPI-controlled audio messaging systems
• Industrial equipment status announcements

Procurement Notes

Verify the specific suffix 'SYI' confirms the SOP-16 package and absence of external flash support. Confirm the industrial temperature grade (-40°C to 105°C) matches system requirements. Check current availability status as distribution may vary. Ensure compatibility with existing SPI interfaces or GPIO trigger circuits during integration planning.

Selection Notes

Select this model when external flash expansion is unnecessary and a smaller SOP-16 package is preferred over QFN-32. Choose if the application requires only playback functionality without recording capabilities. Consider the 2Mbit internal limit for total audio duration needs. Verify that the integrated Class D driver meets power requirements for the connected speaker impedance.

Part Context

The ISD2361SYI belongs to the ISD2361 family of Digital ChipCorder products. It differs from the ISD2361YYI variant by lacking external NOR serial flash support and utilizing an SOP-16 package instead of QFN-32. Both share identical internal flash capacity, audio processing features, and operational modes.

Replacement Considerations

Public confirmed substitutes include ISD2361YYI for applications requiring external flash or QFN-32 packaging. Other ISD236x series members may serve as alternatives if pinouts and feature sets align with specific design constraints.