ISD17240PY

Overview

The Nuvoton ISD17240PY is a single-chip multi-message voice record and playback device from the ISD1700 ChipCorder series. It utilizes patented Multi-Level Storage (MLS) technology for non-volatile message storage in on-chip Flash memory, eliminating the need for digital compression. The device supports user-selectable sampling frequencies ranging from 4 kHz to 12 kHz via an external resistor, which determines the recording duration. For the ISD17240 variant, durations range from 160 seconds at 12 kHz up to 480 seconds at 4 kHz. Operating voltage spans 2.4 V to 5.5 V, and it features dual input channels (differential microphone with AGC or single-ended analog) and dual output channels (PWM Class D speaker driver and configurable analog output).

Feature Summary

• Integrated message management system enabling standalone push-button operation or microcontroller SPI control.
• Patented Multi-Level Storage (MLS) technology providing high-quality, uncompressed audio reproduction without digital compression.
• Dual operating modes allowing flexible configuration through Analog Path Configuration (APC) registers in SPI mode.
• Built-in Automatic Gain Control (AGC) for microphone preamplifier and volume control with eight adjustable levels.

Applications

• Electronic systems requiring simple, single-chip voice messaging solutions.
• Battery-powered applications optimized by low voltage operation and automatic power-down features.
• Industrial or commercial environments utilizing industrial temperature grade options (-40°C to +85°C).

Procurement Notes

Verify the specific suffix 'PY' against official ordering information to confirm package type and temperature grade. The datasheet indicates PDIP packaging for this series; ensure compatibility with PCB layout requirements. Check current product status as availability may vary. Confirm supply voltage and sampling frequency resistor values match design specifications before procurement.

Selection Notes

Select the ISD17240PY when extended message duration up to 480 seconds is required. Choose based on the necessary trade-off between sampling frequency and recording time. Ensure the application environment falls within the specified operating temperature range. Verify that the 28-pin PDIP package fits the mechanical constraints of the target design.

Part Context

The ISD17240PY belongs to the Nuvoton ISD1700 ChipCorder series, which offers various message durations depending on the specific model number. This series is designed for high-quality voice recording and playback using solid-state memory. Other models in the family include ISD1730, ISD1760, and ISD17120, offering shorter durations suitable for different application needs.

Replacement Considerations

Direct replacements within the ISD1700 series include ISD1730, ISD1760, and ISD17120, though these offer different maximum message durations. Verify pinout compatibility and software command sets if migrating from other ISD series chips. No direct cross-series substitutes are confirmed in public documentation.