ISD2532SY

Voice Record And Playback Overview

The ISD2532SY is a single-chip, multiple-message voice record/playback device from the Winbond ISD2500 ChipCorder series. It provides 32 seconds of recording duration using direct analog storage in on-chip nonvolatile memory without digitization or compression. The device operates on a single 5V supply and includes an internal oscillator, microphone preamplifier, automatic gain control, and speaker amplifier. It supports microcontroller interfaces for complex addressing and manual switch operation. Key electrical parameters include a typical standby current of 1 µA, message retention of 100 years, and 100,000 record cycles.

Voice Record And Playback Feature Summary

• Direct analog storage technology preserves natural voice quality without digital compression artifacts.
• Integrated microphone preamplifier with automatic gain control and built-in speaker driver.
• Zero-power message storage eliminates the need for battery backup circuits.
• Supports multiple operational modes including push-button control and cascading for extended durations.

Voice Record And Playback Applications

• Single-chip voice messaging systems
• Automated announcements and industrial controls
• Educational toys and novelty items
• Security alarm messages

Voice Record And Playback Procurement Notes

Verify the specific package type (PDIP or SOIC) and temperature grade required for the application. Confirm that the 'SY' suffix corresponds to the intended lead-free or specific packaging variant as defined by the manufacturer's ordering guide. Ensure compatibility with the 5V supply voltage and check pinout alignment if replacing legacy components.

Voice Record And Playback Selection Notes

Select this component when a simple, low-cost solution for short-duration voice recording is needed. The ISD2532 offers 32 seconds of audio; choose higher models like ISD2540 or ISD2564 if longer durations are required. Consider the ISD2500 series for applications requiring direct analog storage and minimal external components compared to digital flash-based alternatives.

Voice Record And Playback Part Context

The ISD2532 is part of the Winbond ISD2500 ChipCorder family, which also includes the ISD2540, ISD2548, and ISD2564. These devices share the same core architecture and interface but differ in memory capacity and sampling rates. The series utilizes patented multilevel storage technology to store voice signals directly in nonvolatile memory cells.

Voice Record And Playback Replacement Considerations

Public confirmed substitute part numbers: ISD2532PI, ISD2532SOIC.