ISD1790EYR

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The ISD1790EYR is part of the ISD1700 series of high performance, single-message storage and single-chip voice record and playback products. It is designed specifically for embedded voice recording and playback applications requiring high quality, but lightweight Voice-on-Demand capabilities, such as voice prompt and voice reminder applications. ISD1790EYR is a single-chip solution that combines embedded memory and an audio data recorder/playback controller in a small, low-power package.

The ISD1790EYR supports multiple sampling rates and has low power consumption, making it perfect for embedded voice recording applications. It is integrated with a 2.7V to 4.5V analog power supply and 4KB embedded memory, enabling the capture and playback of digital audio data. With 256 bytes of RAM and 4KB of onboard flash memory, the ISD1790EYR can quickly and easily store short messages for playback as needed.

The integrated memory, in combination with its I2C interface, make the ISD1790EYR an ideal choice for voice-activated applications which requires a compact package and minimal power consumption. The integrated memory also allows for very low latency operation, reducing overall power consumption and making the device perfect for voice prompt and voice reminder applications. The ISD1790EYR also provides an onboard volume control for adjusting playback volume levels.

In terms of working principle, the ISD1790EYR operates in one of four modes: record, play, erase, and standby. When recording, the device captures digital audio data and stores it to the integrated flash memory. The device automatically adjusts the sampling rate to ensure a high-fidelity recording, while the integrated volume control allows users to adjust the playback volume. The device also allows users to pause and resume the recording process, and can store up to four messages of up to 4 seconds each.

To playback stored audio, the device retrieves digital audio data from the integrated flash memory and reproduces it through an external audio codec. The device can also erase recorded audio to free up storage space in the memory, thus allowing for additional audio to be recorded. Finally, there is a standby mode that consumes minimal power, which allows the device to enter a low-power state when not in use.

In conclusion, the ISD1790EYR is a single-chip solution designed for embedded voice recording and playback applications that require high quality, but lightweight Voice-on-Demand capabilities. Its integrated memory, low latency operation and low power consumption make it ideal for voice prompt and voice reminder applications, while the I2C interface allows for ease of integration in a wide variety of systems. With its four operating modes –record, play, erase, and standby– and onboard volume control, the device is an excellent choice for applications which require compact, low-power Voice-on-Demand solutions.

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