ISD1110P

Overview

The ISD1110P is a single-chip voice record and playback device from the ISD1100 series, manufactured by Nuvoton Technology Corporation. It provides 10 seconds of recording duration using patented Multi-Level Storage (MLS) technology. The IC operates on a single 5V supply with an operating voltage range of 4.5V to 5.5V. It features a 6.4 kHz sampling frequency and a 2.6 kHz filter passband. The device utilizes a push-button interface for control and includes an internal oscillator, microphone preamplifier, automatic gain control, and speaker amplifier. It is housed in a 28-DIP package.

Feature Summary

• Patented Multi-Level Storage (MLS) technology enables high-quality natural voice reproduction without synthetic effects.
• Zero-power message storage retains data for up to 100 years without battery backup.
• Automatic power-down mode reduces standby current to typically 0.5 µA after operations.
• Fully addressable architecture supports multiple messages via A0-A7 pins.

Applications

• Voice recorders and喊话器 (megaphones)
• Toys and novelty gifts
• Security alarm systems

Procurement Notes

Verify component authenticity as the ISD1110P is officially listed as obsolete. Confirm the specific manufacturer source, noting historical production by Winbond and potential availability through Nuvoton or authorized distributors. Ensure the datasheet revision matches the required specifications for your design.

Selection Notes

Select this component for applications requiring simple push-button control and short message durations around 10 seconds. It is suitable for standalone designs without microcontrollers. Consider the ISD1112 if 12 seconds of duration is needed, or newer ISD1700/ISD1900 series for longer durations and flexible sampling rates.

Part Context

The ISD1110P belongs to the ISD1100 series of ChipCorder devices. This series was originally developed by Winbond and later continued by Nuvoton Technology Corporation. The P suffix denotes the 28-lead Plastic Dual Inline Package (PDIP). The series is designed for low-cost, high-volume consumer electronics requiring solid-state voice storage.

Replacement Considerations

The ISD1810 is a documented successor designed for similar markets like toys and megaphones. For modern replacements with extended duration and flexibility, consider the ISD1700 or ISD1900 series which offer user-selectable durations and higher sampling frequencies.

FAQ

How does the ISD1110P handle multiple messages?

It uses fully addressable memory rows controlled by pins A0-A7. By setting different address combinations, distinct messages can be recorded and played back sequentially.

What is the function of the RECLED pin?

The RECLED pin outputs a LOW signal during a record cycle to drive an indicator LED. It also pulses LOW momentarily when an End-of-Message (EOM) marker is detected during playback.

Can the ISD1110P loop a message continuously?

Yes, by holding pins A3, A6, and A7 HIGH simultaneously and triggering PLAYE, the device will continuously loop the message until PLAYL is pulsed LOW.