ISD4003-04MSYR

Overview

The ISD4003-04MSYR is a single-chip voice record and playback device from the ISD4003 ChipCorder series, manufactured by Nuvoton Technology Corporation. It provides 4 minutes of recording duration at an 8 kHz sampling frequency with a typical filter passband of 3.4 kHz. The component operates on a single 2.7 V to 3.3 V supply and features an SPI interface for microcontroller control. It utilizes high-density multilevel Flash memory for non-volatile storage, supporting 100K record cycles and 100-year retention. The device includes an internal oscillator, AutoMute feature, and audio amplifier, packaged in a 28-SOIC format.

Feature Summary

• Direct analog storage technology preserves natural voice quality without digitization or compression algorithms.
• Integrated AutoMute function attenuates background noise during silence periods to improve signal clarity.
• Fully addressable memory architecture allows for multiple message handling via SPI commands.
• Zero-power message storage ensures data retention without continuous power supply.

Applications

• Cellular phone messaging systems
• Portable electronic devices requiring voice prompts
• Microcontroller-based industrial control interfaces

Procurement Notes

Verify the specific suffix 'R' indicates reel packaging if required by assembly equipment. Confirm the commercial temperature range (0°C to +70°C) matches the target environment. Check for end-of-life status as distribution availability may be limited. Ensure the 28-SOIC footprint aligns with the PCB design. Validate that the 3V supply voltage is compatible with the system power rails.

Selection Notes

Select this model for applications requiring exactly 4 minutes of audio time. Choose the industrial variant if operation below 0°C is necessary. Consider external clocking via XCLK pin if precise frequency stability beyond ±2.25% is required. Ensure the host microcontroller supports the SPI protocol for command execution. Verify input signal levels match the 32 mVpp single-ended or 16 mVpp differential specifications.

Part Context

This component belongs to the ISD4003 ChipCorder series, which offers varying durations from 4 to 8 minutes. The series shares common architectural features including multilevel Flash memory and SPI control. Other variants like ISD4003-08M provide longer durations at lower sampling rates. The family is designed for portable, battery-operated voice messaging solutions.

Replacement Considerations

Nuvoton recommends I3900FYI as a manufacturer-recommended alternative. Verify compatibility regarding package type, pinout, and software command sets before substitution. Cross-reference electrical characteristics to ensure performance equivalence in the specific application.