ISD5116S

Overview

The ISD5116S is a single-chip voice record and playback device from the ChipCorder series, designed for messaging applications requiring up to 16 minutes of duration. It features dual storage capability for both analog audio and digital data within on-chip nonvolatile memory. The device operates with a supply voltage of +2.7V to +3.3V and supports 2.0V and 3.0V interface logic levels. Control and configuration are managed via a standard I2C serial interface, minimizing external pin count. Sampling frequencies range from 4 kHz to 8 kHz, determining the trade-off between message duration and audio bandwidth.

Feature Summary

• Integrates fully analog and digital signal paths on a single chip, eliminating the need for external compression algorithms or complex audio processing circuitry.
• Supports simultaneous storage of uncompressed analog voice messages and digital system data, such as phone numbers or configuration parameters, within the same memory array.
• Includes built-in automatic gain control (AGC), volume control, and speaker driver capabilities to facilitate direct interfacing with microphones and speakers.

Applications

• Cellular phones and portable communication devices
• Automotive communications and hands-free car kits
• GPS and navigation systems

Procurement Notes

Verify component authenticity through authorized distributors or original manufacturer channels. Confirm package type and revision level against current engineering drawings. Check for end-of-life status or obsolescence notices prior to final design approval. Ensure supply chain stability for long-term production requirements.

Selection Notes

Select this component when a low-pin-count solution for mixed analog-digital storage is required. Evaluate sampling rate needs against desired message duration constraints. Verify I2C bus compatibility with the host microcontroller. Consider power consumption profiles for battery-operated portable applications.

Part Context

The ISD5116 belongs to the Winbond/Nuvoton ChipCorder family, which utilizes patented multilevel storage technology. This architecture allows voice signals to be stored directly in solid-state memory without compression, ensuring high-fidelity reproduction. The series is known for zero-power retention and high endurance cycles for both analog and digital data segments.

Replacement Considerations

Check Nuvoton official documentation for recommended replacements if the ISD5116S is obsolete. Verify pinout compatibility and I2C register mapping before substituting with newer models in the ISD51xx series. Ensure voltage levels and package dimensions match the existing PCB layout.

FAQ

How is the memory allocated between analog and digital data?

Memory allocation is determined by the system microcontroller during recording. The Message Address Table (MAT) tracks which pages contain analog audio and which contain digital data, allowing flexible partitioning of the 4 Mbit array.

What is the typical retention period for stored messages?

The on-chip nonvolatile memory typically retains messages for up to 100 years without power, providing zero-power storage for both analog voice and digital information.

Can the device operate in full-duplex mode?

Yes, the ISD5116 supports full-duplex conversation recording and playback. It can handle simplex or duplex modes depending on the audio path configuration set via the internal registers.