ISD17240SYR

Overview

The Nuvoton ISD17240SYR is a single-chip multi-message voice record and playback device from the ISD1700 ChipCorder series. It features an internal oscillator, microphone preamplifier with Automatic Gain Control (AGC), and Multi-Level Storage (MLS) array for non-volatile message storage. The device supports standalone push-button or SPI microcontroller modes. Operating voltage ranges from 2.4 V to 5.5 V, with an industrial temperature range of -40°C to +85°C. Sampling frequency is selectable from 4 kHz to 12 kHz via an external resistor. Message duration is user-selectable, reaching up to 480 seconds at 4 kHz. It includes a PWM Class D speaker driver and configurable analog output.

Feature Summary

• Integrated message management system allowing self-managed address locations for multiple messages in a simple push-button environment.
• Dual operating modes supporting standalone operation with automatic power-down or full microcontroller control via SPI interface.
• Patented Multi-Level Storage (MLS) technology enabling direct audio data storage in solid-state memory without digital compression.
• Dual output channels providing a differential PWM Class D speaker driver for direct speaker connection and a configurable single-ended analog output.

Applications

• Electronic systems requiring high-quality voice recording and playback
• Battery-powered applications optimized by wide operating voltage range
• Microcontroller-based systems utilizing SPI mode for complex messaging

Procurement Notes

Verify the specific suffix 'SYR' against official ordering information to confirm package type and temperature grade. Confirm current product status as datasheets may indicate obsolescence for older revisions. Ensure design compliance with absolute maximum ratings regarding supply voltage and input limits to prevent permanent damage.

Selection Notes

Select this model when extended message duration up to 480 seconds is required compared to shorter variants in the series. Choose based on the need for industrial temperature rating (-40°C to +85°C). Consider the external resistor requirement for sampling frequency adjustment if precise timing control is necessary for the application.

Part Context

This component belongs to the Nuvoton ISD1700 ChipCorder series, which offers fully integrated single-chip solutions for voice applications. The series provides flexibility in message duration and sampling frequency, catering to various electronic system requirements through both standalone and SPI operational modes.

Replacement Considerations

Other models within the ISD1700 series such as ISD1730, ISD1760, and ISD17120 offer similar functionality but with different maximum message durations. Verify pin compatibility and software command sets if migrating between these variants.