ISD1760PY Multi-Message Voice Record/Playback DIP-28 (ISD1760PY IC)
The ISD1760PY is an integrated, single-chip voice recording and playback device from the ISD1700 family. Housed in a 28-pin DIP package, it uses Nuvoton’s proprietary ChipCorder technology to store audio in a non-volatile multi-level storage array. This allows for high-quality, natural-sounding voice reproduction without the need for complex digital compression.
This IC is a high-capacity choice for industrial announcement systems, interactive kiosks, and complex toys. It offers significantly more recording time than the ISD1720, making it suitable for applications requiring multiple long messages. It can operate in standalone mode via simple push-buttons or be controlled by a microcontroller like an Arduino or ATmega via its SPI interface.
Key Features
- Longer Duration: Provides 40 to 120 seconds of recording time, depending on the sampling frequency (4kHz to 12kHz).
- Non-Volatile Storage: Audio is retained for up to 100 years without power, supporting 100,000 record cycles.
- Integrated Driver: Features a direct speaker drive (PWM) for 8-ohm speakers and a separate analog output for external amps.
- Dual Mode Operation: Easily switches between tactile button control and SPI (Serial Peripheral Interface) control.
- Visual Feedback: Includes an LED output that blinks during recording or playback to provide a status indicator.
- Audio Inputs: Equipped with both Microphone inputs (with Automatic Gain Control) and a Line-In for external audio sources.
- Wide Supply Range: Operates on a single supply from 2.4V to 5.5V.
Specifications
- IC Type: Voice Record/Playback
- Sampling Frequency: 4kHz to 12kHz (User-selectable via external resistor)
- Record Time: 60 seconds (at standard 8kHz sampling)
- Output Power: 0.5W into 8 ohms (Direct Drive)
- Memory Type: Multi-level Flash
- Interface: Push-button or 4-wire SPI
- Package Type: PDIP-28
- Operating Temperature: 0 to 70 degrees Celsius
Pinout Highlights
- Pin 1 (VCCD): Digital Power Supply
- Pin 4 (VSSA): Analog Ground
- Pin 5 (SP+): Speaker Output Positive
- Pin 6 (SP-): Speaker Output Negative
- Pin 10 (ANA IN): Analog Line Input
- Pin 14 (ROSC): Sampling Frequency Resistor Connection
- Pin 23 (SPI Port): Includes MOSI, MISO, SCLK, and SS/
- Pins 24-28 (Control): Push-button inputs (REC, PLAY, ERASE, FWD, VOL)
