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KT148A Sound Chip Voice IC One Wire UART Control 420s Built-in Memory - $1 (Shenzhen)
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Features：
🔹 Ultra-low power consumption
🔹 Seamless voice integration
🔹 Ultra-simple Peripheral circuit
🔹 Ultra-low Cost
🔹 built-in 420K Byte voice storage space
🔹 can directly drive a 0.5W speaker
🔹 can be reprogrammed
🔹 Users can replace the voice content themselves via the serial port on a computer, without the need for other expensive tools.
Perfect for:
✅ Consumer Electronics: Electronic Toys & Greeting Cards, Alarm Clocks & Timers, Calculators & Measurement Tools
✅ Automotive & Transportation: Vehicle Alerts & Warnings, Public Transport Announcements
✅ Industrial & Safety Equipment: Machinery Status Alarms, Security Systems
✅ Healthcare & Accessibility: Medical Devices, Assistive Devices for Visually Impaired
✅ Home Appliances & Utilities: Smart Kitchen Devices, Utility Meters
✅ Retail & Public Services: Self-Service Kiosks, Queue Management Systems
✅ Agriculture & Environment Monitoring: Weather Stations & Sensors, Irrigation Alert
Functional parameters
1. 32-bit DSP voice chip, 5MHz internal oscillator, PLL up to 120MHz.
2. Operating voltage 2.0~5.5V; note that there are detailed hardware differences when supplying below 3.3V.
3. Standby power consumption is less than 25uA; there is also a low power mode of 1.5uA.
4. 16-bit PWM output, can directly drive an 8 ohm / 0.5W speaker.
5. Provides tools for users to convert audio formats themselves, which is very simple for all users.
6. Supports up to 200 seconds at 16KHz and up to 400 seconds at 8KHz.
7. Users can replace the voice content directly via the serial port using the tool software on the computer.
8. Supports one-wire serial port control, and various protocols can be customized according to needs.
9. Supports 224 segment addresses, and can be expanded for more needs; see section 4.5 for details.
10. Has hardware IIC interface, UART interface, and can customize various functions for customers.
11. The chip has the ability to be reprogrammed, so there is no need to worry about incomplete testing leading to batch issues at any time
Visit https://www.aliexpress.com/item/1005009084565910.html for details or technical resources download.
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