ISD1790PY01

Overview

The ISD1790PYI01 is a multi-message single-chip voice record and playback device from the Winbond ISD1700 series, manufactured by Nuvoton Technology Corporation. It features a 28-pin PDIP package and supports message durations ranging from 60 seconds to 180 seconds depending on the sampling frequency. The device operates within a supply voltage range of 2.4 V to 5.5 V and supports an industrial temperature range of -40°C to +85°C. Sampling frequencies are selectable between 4 kHz and 12 kHz via an external resistor.

Feature Summary

• Integrated message management system enabling standalone push-button operation with automatic power-down after each cycle.
• Dual operating modes including standalone control and microcontroller SPI interface for full user selectability.
• On-chip Flash memory utilizing Multi-Level Storage (MLS) technology for zero-power message storage without digital compression.
• Built-in microphone preamplifier with Automatic Gain Control (AGC), auxiliary analog input, and PWM Class D speaker driver.

Applications

• Electronic systems requiring high-quality voice recording and playback
• Push-button controlled messaging devices
• Microcontroller-based voice applications via SPI interface

Procurement Notes

Verify the specific ordering suffix against the manufacturer's current datasheet to confirm package type and temperature grade. Ensure the component matches the required message duration specifications for your application. Confirm lead-free status if environmental compliance is mandatory. Cross-reference the part number with official distributor catalogs to validate availability and authenticity before purchase.

Selection Notes

Select this component based on the required message duration and sampling frequency combination. The ISD1790 variant specifically supports up to 180 seconds at lower sampling rates. Choose the appropriate package style such as PDIP for through-hole mounting. Consider the operating voltage range and temperature requirements to ensure compatibility with the target system environment and power supply constraints.

Part Context

This component belongs to the ISD1700 ChipCorder series, which offers fully integrated voice recording and playback solutions. The series utilizes proprietary Multi-Level Storage technology to store audio data directly in solid-state memory. This family of devices provides flexibility in message duration and quality through adjustable sampling frequencies and external oscillator resistors.

Replacement Considerations

Other members of the ISD1700 series may serve as alternatives with different message durations or package options. Verify pinout compatibility and electrical characteristics when substituting. Check for updated revisions or lead-free variants that maintain functional equivalence while meeting specific manufacturing or environmental requirements.