ISD2560SYR

Overview

The ISD2560SYR is a single-chip voice record and playback IC from Nuvoton's ChipCorder series. It provides approximately 63.8 seconds of recording duration using on-chip nonvolatile memory cells, enabling zero-power message storage. The device integrates an internal oscillator, microphone preamplifier, automatic gain control, anti-aliasing filter, smoothing filter, and speaker amplifier. It supports SPI interface for microcontroller compatibility and operates within a supply voltage range of 2.4 V to 5.5 V. The component is housed in a 28-pin SOIC package and functions across a temperature range of -40°C to 85°C.

Feature Summary

• Integrated speech synthesizer with recording capability
• On-chip nonvolatile memory for zero-power storage
• Built-in audio processing including PGA and filters
• Microcontroller-compatible SPI interface

Applications

• Push button message cueing systems
• Single-message voice prompts
• Consumer electronic voice feedback modules

Procurement Notes

Verify the specific suffix 'SYR' against official Nuvoton documentation to confirm packaging details and RoHS compliance status. Cross-reference the part number with current distributor listings as availability may vary. Ensure the selected variant matches the required operating temperature and voltage specifications for the target application environment.

Selection Notes

Select this component for applications requiring simple, single-channel voice messaging without external memory. The integrated amplifier allows direct speaker connection, reducing bill of materials. Consider the 63.8-second duration limit when designing message sequences. Verify that the SPI interface timing requirements align with the host microcontroller capabilities.

Part Context

The ISD2560 belongs to Nuvoton's ISD2500/ISD2600 family of single-chip voice recorders. These devices utilize proprietary high-density multi-level storage arrays to achieve extended recording times in compact packages. The series is designed for cost-sensitive consumer applications where voice interaction is needed without complex digital signal processing hardware.

Replacement Considerations

Check for ISD2560 variants with different suffixes (e.g., SI, MT) which may offer alternative packaging options such as QFN or TSSOP while maintaining identical electrical functionality. Confirm pinout compatibility before substituting.