ISD4004-10MSYI

Overview

The ISD4004-10MSYI is a single-chip voice record/playback solution from Nuvoton Technology Corporation, part of the ISD4004 ChipCorder series. It utilizes Direct Analog Storage (DAST) technology to store voice signals directly onto an on-chip multilevel Flash memory array without A/D conversion. The device supports a recording duration of 10 minutes at a sampling frequency of 6.4 kHz, with a typical filter passband of 2.7 kHz. It operates on a single 3V supply, drawing 25 mA during recording and 1 µA in standby. Communication is managed via a 4-wire SPI interface, allowing for fully addressable message management. The component is housed in a 28-lead SOIC package and is rated for commercial operation between 0°C and +70°C.

Feature Summary

• Direct analog storage preserves natural voice quality without digital compression artifacts
• Integrated AutoMute feature attenuates background noise during silence periods
• Non-volatile Flash memory retains messages for up to 100 years without power
• Supports multiple message segments through fully addressable row-based memory architecture

Applications

• Portable consumer electronics requiring voice messaging capabilities
• Industrial control systems needing audible status alerts or instructions
• Automotive infotainment or navigation system voice prompts
• Medical equipment audio signaling and alarm notifications

Procurement Notes

Verify the specific ordering suffix MSYI corresponds to the required industrial temperature range and lead-free packaging configuration as defined in the official Nuvoton datasheet. Confirm that the SOIC-28 package dimensions match your PCB footprint requirements. Ensure the microcontroller interface supports the required SPI protocol timing and voltage levels for reliable communication with the device.

Selection Notes

Select this model when a 10-minute recording duration at 6.4 kHz sampling rate is required. Choose the industrial temperature grade if operation below 0°C or above 70°C is necessary. Consider the SOIC package for surface-mount assembly constraints. Evaluate the need for external clocking via XCLK if precise frequency stability beyond internal oscillator tolerances is critical for your application.

Part Context

The ISD4004 series represents Nuvoton's CMOS-based voice recording solutions designed for portable applications. This series eliminates the need for external codecs by integrating anti-aliasing filters, smoothing filters, and audio amplifiers on a single chip. The ISD4004-10 variant specifically balances audio fidelity with storage capacity, offering a middle-ground option between the shorter duration 8-minute and longer duration 12/16-minute models in the family.

Replacement Considerations

ISD4004-10MSYI may be replaced by other variants within the ISD4004 series such as ISD4004-08MSYI or ISD4004-12MSYI if duration requirements differ. Cross-referencing pin compatibility and SPI command sets is essential when substituting between different duration models within the same package type.