ISD1110S

Overview

The ISD1110S is a single-chip voice record and playback device from the ISD1100 series, manufactured by Winbond (Nuvoton). It provides 10 seconds of recording duration using patented Multi-Level Storage technology. The chip operates on a single 5V supply with a voltage range of 4.5V to 5.5V. Key electrical parameters include a sampling frequency of 6.4 kHz, a filter passband of 2.6 kHz, and a standby current of 0.5 µA typical. It features an on-chip oscillator, microphone preamplifier, automatic gain control, and speaker amplifier. The device supports push-button interfaces for edge- or level-activated playback and includes fully addressable memory for multiple messages.

Feature Summary

• Utilizes patented Multi-Level Storage technology for high-quality natural voice reproduction without synthetic effects.
• Features zero-power message storage in nonvolatile memory, eliminating the need for battery backup circuits.
• Includes built-in automatic power-down mode that enters standby after record or playback operations.
• Supports fully addressable multiple message handling and looping capabilities via specific address pin configurations.

Applications

• Single-chip voice record/playback solutions for messaging applications
• Low-cost electronic toys and novelty items requiring voice output
• Simple announcement systems or greeting cards

Procurement Notes

Verify the manufacturer designation as Winbond or Nuvoton Technology Corporation, as both entities are associated with this component lineage. Confirm the package type is 28-Lead Plastic Small Outline IC (SOIC) matching the 'S' suffix. Check for RoHS compliance status if required by local regulations, noting that lead-free variants may carry specific ordering suffixes such as 'Y'. Ensure the revision level matches the design requirements, as older revisions may have different electrical characteristics.

Selection Notes

Select the ISD1110S when a fixed 10-second recording duration is sufficient for the application. Choose this SOIC package variant for surface-mount assembly processes. Consider the internal pull-up resistors on control pins when designing the interface circuitry to prevent false triggering. Verify that the external clock is not required, as the internal oscillator meets standard timing specifications for commercial temperature ranges.

Part Context

The ISD1110S belongs to the ISD1100 series of ChipCorder devices, which also includes the ISD1112 offering 12 seconds of duration. These components represent early solid-state voice recording solutions designed to replace magnetic tape mechanisms. The series is characterized by its simplicity, requiring minimal external components for basic operation. While newer generations exist, this series remains a reference for low-complexity voice integration.

Replacement Considerations

The ISD1810 is documented as a subsequent replacement model specifically targeting the same market segments. When substituting, verify pin compatibility and software control logic differences, as newer models may alter interface behaviors or power consumption profiles compared to the ISD1100 series.