NUVOTON ISD2360YYI

The ISD2360 is a 3-channel digital ChipCorder® providing single-chip storage and playback of high quality audio. The device features digital de-compression, comprehensive memory management, flash storage, integrated audio signal path with up to 3 channel concurrent playback and Class D speaker driver capable of delivering power of 0.95W. This family utilizes flash memory to provide non-volatile audio playback with duration up to 64 seconds (based on 8kHz/4bit ADPCM compression) for a single-chip audio playback solution. The ISD2360 can be controlled and programmed through an SPI serial interface or operated stand-alone by triggers applied to the device’s six GPIO pins. The ISD2360 requires no external clock sources or components except a speaker to deliver quality audio prompts or sound effects to enhance user interfaces. In addition, the part can provide non-volatile flash storage in 1Kbyte sectors eliminating the need for additional serial EEPROM/Flash devices. ISD2360 provides wide range of sampling frequencies, high SNR performance, low power consumption, fast programming time and integrated program verification.

• Duration: ISD2360 – 64 seconds based on 8kHz/4bit ADPCM in 2Mbit of flash storage (256KB)
• Audio Management:
  • Store pre-recorded audio (Voice Prompts) using high quality digital compression
  • Use simple index based command for playback – no address needed
  • Execute pre-programmed macro scripts (Voice Macros) designed to control the configuration of the device and playback Voice Prompts sequences
• Path and playback Control:
  • Up to 3 channel audio streaming can be mixed and played back concurrently
  • Each channel has independent counter which enables user micro-management on VM execution
  • Mask Jump allows branch execution depending on internal register or external GPIO pin status
• Sample Rate:
  • 7 sampling frequencies 4, 5.3, 6.4, 8, 12.8, 16 and 32 kHz are available
  • Each Voice Prompt can have optimal sample rate
• Compression Algorithms:
  • μ -Law: 6, 7 or 8 bits per sample
  • Differential μ -Law: 6, 7 or 8 bits per sample
  • PCM: 8, 10 or 12 bits per sample
  • Enhanced ADPCM: 2, 3, 4 or 5 bits per sample
  • Variable-bit-rate optimized compression. This allows best possible compression given a metric of SNR and background noise levels
• Oscillator:
  • Internal oscillator with internal reference: factory trimmed to ±1% deviation at room temperature
• Output:
  • PWM: Class D speaker driver to direct drive an 8Ω speaker or buzzer
  • Delivers: 4Ω load: 400mW @3.3V; 1.1W @5V; 1.3W @5.5V. 8Ω load: 330mW @3.3V; 850mW @5V; 1W @5.5V
• I/Os:
  • SPI interface: MISO, MOSI, SCLK, SSB for commands and digital audio data
  • 6 general purpose I/O pins multiplexed with SPI interface
• Flash Storage:
  • 2Mbit of storage for combined audio/data
  • Fast programming time (20μs/byte)
  • Erase sector size 1Kbyte, sector erase time 2ms
  • Integrated memory checksum calculation for fast verification
  • Endurance >100K cycles. Retention >10 years
• Operating Voltage: 2.4 - 5.5V
• Package: Green, QFN32
• Temperature Options: Industrial: -40℃ to 85℃

• SPI mode applications
• Standalone applications