ISD5104SY

Overview

The ISD5104SY is a single-chip voice record/playback device from the ISD5100 ChipCorder series, offering a recording duration of 2 to 4 minutes. It utilizes Nuvoton’s patented multilevel storage technology to store voice and audio signals directly into solid-state memory in an uncompressed form. The device supports dual storage of digital and analog data, allowing for flexible message management. It operates on a supply voltage ranging from +2.7V to +3.3V and features a standard I2C serial interface for control. Key electrical parameters include a typical standby current of 1µA, operating currents of 15mA (play) and 30mA (record), and support for sampling frequencies between 4.0 kHz and 8.0 kHz.

Feature Summary

• Integrated single-chip solution with built-in AGC, speaker driver, and volume control eliminating external circuitry.
• Dual storage capability for both analog voice messages and digital system data such as phone numbers.
• I2C serial interface minimizes pin count while enabling full addressability for multiple messages.
• Nonvolatile flash memory provides zero-power message retention with high endurance ratings.

Applications

• In-terminal answering machines
• Automotive communications systems
• GPS and navigation devices
• Portable cellular phones

Procurement Notes

Verify the specific ordering suffix against the manufacturer's official documentation to confirm package type and temperature grade. Ensure the selected variant matches the required commercial or industrial specifications. Cross-reference the part number with the latest datasheet revision to confirm availability and any potential design changes.

Selection Notes

Select the ISD5104SY when a recording duration between 2 and 4 minutes is required. Consider the trade-off between sampling frequency and audio quality, as higher durations necessitate lower sampling rates. Verify that the host microcontroller supports the I2C protocol and can handle the required logic voltage levels of 2.0V or 3.0V.

Part Context

The ISD5104SY belongs to the ISD5100 series, which enhances the previous ISD5000 architecture by adding I2C control and digital data storage capabilities. This series is designed for portable communication products requiring high-quality voice messaging with minimal external components. The SY suffix typically denotes a specific package and temperature range configuration within the broader product line.

Replacement Considerations

The ISD5102 offers 1 to 2 minutes of duration, while the ISD5108 provides 4 to 8 minutes. These variants share the same pinout and I2C interface but differ in memory size and recording time. Ensure the replacement meets the specific duration requirements of the application without altering the system interface design.

FAQ

Can the ISD5104 store digital data alongside analog voice messages?

Yes, the device supports dual storage, allowing users to allocate memory space for digital data such as phone numbers or system parameters alongside analog voice recordings.

What is the typical message retention period for the ISD5104?

The device typically retains messages for up to 100 years without power due to its nonvolatile flash memory technology.

How is the recording duration determined for this model?

The duration is fixed between 2 and 4 minutes depending on the selected sampling frequency, which can be configured via software to 4.0, 5.3, 6.4, or 8.0 kHz.