ISD2115AYYI

Overview

The ISD2115AYYI is a digital ChipCorder microcontroller featuring an Arm Cortex-M0 core and integrated flash storage for high-quality audio playback. It supports up to 15 seconds of audio duration based on 8kHz/4bit ADPCM compression within 1Mbit of flash memory. The device operates at a maximum frequency of 72 MHz with a supply voltage range of 2.7V to 3.6V. It includes a Class D speaker driver capable of delivering 400mW, six GPIO pins for standalone control, and an SPI interface for programming. The component supports multiple sampling frequencies and compression algorithms, ensuring efficient audio management.

Feature Summary

• Integrated digital de-compression and flash storage for non-volatile audio playback without external components.
• Standalone operation capability via GPIO triggers executing pre-programmed Voice Macro scripts.
• Built-in Class D speaker driver providing direct drive for speakers or buzzers with adjustable volume.
• Flexible memory organization allowing separate allocation for voice prompts, macros, and user data.

Applications

• Voice prompts in consumer electronics and appliances
• Security alarm systems requiring audible alerts
• Industrial control interfaces with status announcements
• Automotive electronic displays and notification systems

Procurement Notes

Verify the specific suffix YYI against the official Nuvoton ordering guide to confirm package type and temperature grade. Ensure the design supports the required operating voltage range and SPI timing constraints. Confirm that the 1Mbit storage capacity meets the application's audio duration requirements before finalizing procurement.

Selection Notes

Select this model when standalone audio triggering is required without a host microcontroller. Compare storage needs against the ISD2130 variant if longer durations are necessary. Evaluate the GPIO flexibility for custom trigger sequences. Consider the internal oscillator accuracy for applications sensitive to sample rate deviations.

Part Context

The ISD2115AYYI belongs to the ISD2100 series of digital ChipCorder devices designed for single-chip audio solutions. This series integrates flash memory, signal processing, and output drivers to simplify system design. It targets applications needing reliable, low-power audio playback with flexible control options via SPI or GPIOs.

Replacement Considerations

The ISD2130 offers similar functionality with increased storage capacity for longer audio durations. Verify pin compatibility and software configuration registers when substituting between variants within the ISD2100 family.