ISD17240EYI01

Overview

The ISD17240EYI01 is a multi-message single-chip voice record and playback device from the Winbond ISD1700 ChipCorder series. It features user-selectable message durations ranging from 160 seconds at 12 kHz to 480 seconds at 4 kHz sampling frequencies, adjustable via an external oscillator resistor. The device operates on a supply voltage of 2.4 V to 5.5 V and supports both standalone push-button and microcontroller SPI modes. It incorporates Multi-Level Storage (MLS) technology for direct audio data storage in on-chip Flash memory without digital compression. Key components include a microphone preamplifier with Automatic Gain Control (AGC), an auxiliary analog input, and dual output channels consisting of a PWM Class D speaker driver and a configurable analog output.

Feature Summary

• Integrated message management system enabling simple push-button operation with automatic power-down after each cycle.
• Dual operating modes allowing either standalone control or full microcontroller configuration via a 4-wire SPI interface.
• Direct solid-state storage of audio data using Multi-Level Storage (MLS) technology, eliminating the need for digital compression.
• Flexible audio input and output paths supporting differential microphone inputs with AGC and simultaneous analog and PWM outputs.

Applications

• Electronic systems requiring high-quality voice recording and playback with minimal component count.
• Battery-powered devices utilizing the wide operating voltage range and low standby current.
• Industrial applications requiring industrial temperature range operation (-40°C to +85°C).
• Systems needing specific message duration flexibility through selectable sampling frequencies.

Procurement Notes

Verify the manufacturer origin as the datasheet identifies Winbond as the producer while distributor listings may attribute Nuvoton Technology Corporation. Confirm the package type corresponds to the 'E' suffix (TSOP) and the temperature grade matches the 'I' suffix (Industrial). Ensure the ordering information aligns with the specific duration requirements defined by the '240' model code within the ISD1700 series.

Selection Notes

Select this component when a single-chip solution for multi-message voice interaction is required without external compression codecs. Choose based on the necessary recording duration; the ISD17240 offers up to 480 seconds at lower sampling rates. Consider the SPI mode if complex message management or remote control via a microcontroller is needed. Verify that the 2.4V to 5.5V supply range fits the target application's power constraints.

Part Context

The ISD17240EYI01 belongs to the ISD1700 series of ChipCorder devices, which are designed for versatile voice recording applications. This series utilizes proprietary MLS technology to store audio directly in Flash memory. The '240' designation indicates the specific capacity tier within the family, offering longer recording times compared to lower-numbered models like the ISD1730 or ISD1740. The series supports various packaging options including TSOP, SOIC, and PDIP.

Replacement Considerations

Other members of the ISD1700 series, such as the ISD17210 or ISD17180, offer similar functionality but with different maximum message durations. Substitution requires verifying that the alternative part meets the specific timing requirements dictated by the chosen sampling frequency. Pin compatibility across the series facilitates design changes, provided the electrical characteristics remain within acceptable limits.