Product Overview
The WTK6900HA Voice Recognition chip is designed for local voice-triggered engine recognition, featuring low cost, high reliability, and strong versatility. This solution supports offline far-field recognition up to 3 meters away, with support for approximately 50 command entries. The chip integrates a 32-bit CPU processor, including peripheral interfaces such as UART, GPIO, I2C, ADC, and PWM; it also includes built-in SRAM and FLASH, requiring only minimal external components to form a complete solution.
Chip characteristics
Kernel and Storage
• High-performance 32-bit core, clocked at 160MHz, supports hardware floating-point operations
• Built-in 1MB SPI FLASH
AI Algorithms
• Offline voice recognition using the latest neural network algorithms, offering high accuracy and low misjudgment rates, reliable recognition up to 3 meters away
• Voice noise reduction algorithm: filters out steady-state noise and effectively suppresses dynamic noise, ensuring accurate recognition even in noisy environments
Audio
• Single-channel 16-bit DAC, SNR ≥ 95dB
• Single-channel 16-bit ADC, SNR ≥ 90dB
• Supports sampling rates of 8kHz / 11.025kHz / 16kHz / 22.05kHz / 24kHz / 32kHz / 44.1kHz / 48kHz
• Single analog MIC input with built-in MIC bias voltage output
Power Supply
• VCC range: 2.2V to 5.5V
• VOUT range: 2.2V to 3.6V
Peripheral Devices
• Six multifunctional 32-bit timers supporting capture and PWM modes
• One full-speed USB 2.0 OTG controller
• One full-duplex UART
• External wake-up/interrupt on all GPIOs
Operating Temperature
• Operating temperature range: -40°C to +85°C
• Storage temperature range: -65°C to +150°C
Package
• QSOP24
Application Areas
• Smart home appliances (household appliances, health appliances, kitchen appliances, etc.)
• Smart bathroom facilities, smart lighting, smart electromechanical systems, smart homes
• Smart toys
Encapsulation pin
