Nuvoton Technology Corp. 新唐科技 - ISD2360
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Voice/Audio Digital ChipCorder® featuring Multi Channel Mixing delivers highly integrated single chip solution ideal for wide range of voice/audio applications in industrial and consumer markets

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 8 kHz/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.

Compared to previous ChipCorder series, this device provides higher sampling frequencies, improved SNR, lower power, fast programming time and integrated program verification.

Datasheet:  ISD2360.pdf




  • New features
  • Multi-channel: 3-channel mixing playback
  • GPIO parallel processing: Support dynamic change on GPIO output while the chip is in playback
  • EMI, EFT, ESD improvement
  • 0.95W power at 5V
  • Duration
  • ISD236064 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
  • Control
  • Serial SPI interface for microprocessor control and programming.
  • Stand-alone control where customized Voice Macro scripts are assigned to GPIO trigger pins.
  • 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 950mW at 5V supply
  • Delivers 400mW at 3V supply.
  • 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, QFN32and SOP-16
  • Temperature Options:
    Industrial: -40 ° C to 85 ° C




  • Portable personal medical meters
  • Security keypad panels
  • White Goods
  • Instrumentations


  • Metro bus announcement


  • Downloadable audio photo frames and albums
  • Toys
  • Greeting Cards

Development Tools


  • ISD-DMK_2300
  • ISD-ES2360_Mini_PROG
  • VPE2360_win7-32bit
  • VPE2360_win7-64bit
  • VPE2360_Windows-XP