ISD14B80X

Overview

The ISD14B80X is a single-chip multiple-message record/playback device from the ISD14B00 ChipCorder series. It operates on a supply voltage of 2.4V to 5.5V and supports an operating temperature range of 0°C to +50°C. The sampling frequency is selectable from 4 kHz to 12 kHz via an external resistor (Rosc), determining the total recording duration. For the ISD14B80 derivative, the maximum message durations are 128 seconds at 4 kHz, 96 seconds at 5.3 kHz, 80 seconds at 6.4 kHz, 64 seconds at 8 kHz, and 42.6 seconds at 12 kHz. The device features dual operating modes: Address Mode for flexible message definition and Direct Mode for up to eight fixed-duration messages. It includes differential microphone inputs with Automatic Gain Control (AGC), feed-through capability, and Class-D PWM speaker drivers.

Feature Summary

• Dual operational modes allowing flexible address-based message definition or direct access to up to eight pre-configured fixed-duration messages.
• Integrated Automatic Gain Control (AGC) for differential microphone inputs to compensate for varying input levels.
• Direct drive Class-D PWM speaker outputs capable of powering an 8Ω load without external amplification.
• Feed-through mode enabling analog signal transmission to speaker outputs while simultaneously recording.

Applications

• Standalone voice messaging systems
• Automated announcements and public address devices
• Educational toys and interactive learning aids
• Security alarm voice prompts

Procurement Notes

Verify the specific suffix of the ordered part number against the official Nuvoton datasheet to confirm pinout compatibility and package type. Ensure the selected Rosc resistor value matches the desired sampling frequency and duration requirements for the ISD14B80 memory capacity. Confirm that the system power supply remains stable during operation to prevent data corruption.

Selection Notes

Select the ISD14B80 variant when extended recording time is required compared to the ISD14B20 or ISD14B40 derivatives. Choose Address Mode if variable message lengths are necessary, or Direct Mode for simpler hardware control with fixed-length segments. Ensure the application environment stays within the specified 0°C to +50°C temperature range for reliable performance.

Part Context

The ISD14B80X belongs to the ISD14B00 series of ChipCorder devices, which provide non-volatile multi-level storage for audio applications. This series eliminates the need for external microcontrollers in many standalone scenarios by handling record and playback logic internally through simple pin triggers.

Replacement Considerations

ISD14B20 and ISD14B40 derivatives share the same pinout and operational modes but offer shorter maximum recording durations. When replacing ISD14B80 with these variants, verify that the reduced memory capacity meets the application's timing requirements.