ISD4003-08MSYI

Overview

The ISD4003-08MSYI is a single-chip voice record and playback device from the ISD4003 ChipCorder series, manufactured by Nuvoton Technology Corporation. It provides an 8-minute recording duration with a sampling frequency of 4 kHz and a filter passband of 1.7 kHz. The device operates on a single 2.7 V to 3.3 V supply and features an SPI interface for microcontroller control. It utilizes multilevel Flash memory for non-volatile storage, supporting 100K record cycles and 100-year message retention. The component is housed in a 28-pin SOIC package and supports industrial operating temperatures ranging from -40°C to +85°C.

Feature Summary

• Direct analog storage technology preserves natural voice quality without digital compression artifacts.
• Integrated AutoMute feature attenuates background noise during silence periods.
• Fully addressable multiple-message capability managed via SPI or Microwire serial interfaces.
• On-chip oscillator and audio amplifier reduce external component requirements.

Applications

• Portable cellular phones and mobile communication devices
• Industrial human-machine interfaces (HMI) requiring voice prompts
• Remote home appliance control systems with voice feedback
• Public transportation automatic announcement systems

Procurement Notes

Verify the specific suffix 'I' confirms industrial temperature range (-40°C to +85°C) versus commercial variants. Confirm the 'S' indicates the 28-SOIC package type. Check current product status as legacy components may have end-of-life implications. Ensure supply chain sources provide genuine Nuvoton parts with appropriate traceability documentation for industrial applications.

Selection Notes

Select this model when 8 minutes of high-density analog storage is required within a 3V system. Compare against ISD4003-04M, -05M, or -06M variants if shorter durations allow for higher sampling frequencies and wider bandwidth. Consider the ISD4003-08MEI if a TSOP package is preferred over SOIC. Verify that the host microcontroller supports the required SPI protocol and timing constraints for reliable operation.

Part Context

The ISD4003 series represents Nuvoton's evolution of direct analog storage technology, succeeding earlier ISD33000 series chips. It integrates anti-aliasing and smoothing filters directly onto the CMOS die. The series offers scalable durations from 4 to 8 minutes by adjusting sampling rates. This specific part belongs to the industrial grade subset of the broader ISD4003 family designed for robust portable messaging applications.

Replacement Considerations

ISD4003-08MEI serves as a package alternative in TSOP format. ISD4003-08MSY is the commercial temperature variant of the same electrical specification. Direct pin-compatible replacements from other manufacturers are not officially documented; verify functional equivalence carefully if considering third-party options.