ISD4004-12MP

Overview

The ISD4004-12MP is a single-chip voice record/playback solution operating on a single 3V supply. It features 12 minutes of recording duration at a 5.3 kHz sampling frequency, utilizing Nuvoton’s multilevel Flash memory for non-volatile storage with 100-year retention and 100K record cycles. The device includes an on-chip oscillator, anti-aliasing filter, smoothing filter, AutoMute feature, and audio amplifier. Control is managed via SPI or Microwire interface.

Feature Summary

• Single-chip analog storage solution eliminating algorithm development
• AutoMute feature for background noise attenuation during silence
• Direct analog signal storage to natural form in Flash memory
• Microcontroller-compatible SPI or Microwire serial interface

Applications

• Cellular phones and portable messaging devices
• Industrial control systems requiring voice prompts
• Consumer electronics with recorded message capabilities

Procurement Notes

Verify the specific suffix '12MP' corresponds to the 12-minute duration variant and industrial temperature range (-40°C to +85°C) as defined in the official datasheet. Confirm package type availability (SOIC/PDIP) matches system requirements. Ensure power supply decoupling and ground separation adhere to the specified layout guidelines for optimal performance.

Selection Notes

Select this model when 12 minutes of high-quality analog voice storage is required within a single-chip footprint. Consider the 5.3 kHz sampling rate for speech quality optimization. Evaluate the need for external clock precision if operating outside commercial temperature ranges, as internal oscillator tolerance varies by temperature class.

Part Context

The ISD4004 series belongs to Nuvoton's ChipCorder family, designed for direct analog storage applications. This series replaces traditional digital recording methods by storing voice signals directly in Flash memory, offering higher fidelity than compressed digital solutions while maintaining low power consumption and simple microcontroller integration.

Replacement Considerations

ISD4004-08M: 8-minute duration, 8.0 kHz sampling. ISD4004-10M: 10-minute duration, 6.4 kHz sampling. ISD4004-16M: 16-minute duration, 4.0 kHz sampling. All variants share identical pinouts and interfaces but differ in memory organization and sampling rates.