NUVOTON ISD2115AYYIR

ISD2100 is a digital IC that provides single-chip storage and playback of high-quality audio. The device features digital decompression, comprehensive memory management, flash storage, and an integrated audio signal path with a Class D speaker driver. This family uses flash memory to deliver non-volatile audio playback, supporting up to 30 seconds of single-chip audio playback. The ISD2100 can be controlled and programmed via an SPI serial interface, or operated standalone through trigger signals applied to its six GPIO pins. The device requires no external clock source or components to deliver high-quality audio prompts or sound effects for enhanced user interfaces. In addition, the device provides non-volatile flash storage organized in 1K-byte sectors. The ISD2100 offers a wide range of sampling frequencies, high SNR performance, low power consumption, fast programming time, and integrated program verification.

• Based on 8kHz/4-bit ADPCM: up to 30 seconds with 1Mbit flash storage; up to 15 seconds with 512Kbit storage.
• High-quality digitally compressed pre-recorded audio storage.
• Index-based simple command playback — no address required.
• Executes pre-programmed macro scripts for device configuration control and audio prompt sequence playback.
• Microprocessor control and programming via serial SPI interface.
• Standalone control mode: assign custom voice macro scripts to GPIO trigger pins.
• 7 available sampling frequencies: 4, 5.3, 6.4, 8, 12.8, 16, and 32kHz — per-prompt sample rate support.
• Multiple compression algorithms: μ-law, differential μ-law, PCM, enhanced ADPCM, and variable bit rate optimized compression.
• Internal oscillator with internal reference, factory-trimmed to ±1% deviation at room temperature.
• Output: PWM Class-D speaker driver — directly drives 8Ω speaker or buzzer.
• Interface: SPI for commands and digital audio data; 6 GPIO pins multiplexed with SPI interface.
• Flash storage: combined audio/data storage, fast programming, 1K-byte erase sector size, 2ms sector erase time, integrated memory checksum calculation for fast verification, endurance >100,000 cycles, data retention >10 years.
• Operating voltage: 2.7–3.6V.
• Package: QFN-20/SOP-14, halogen-free, RoHS and TSCA compliant.
• Temperature option: industrial temperature range -40°C to 85°C.