AI-Thinker VC-02 (750-Reel)

AI-ThinkerSKU: EXP-R59-083

Sale price1.567,20 €

excl. VAT plus Versand

Not in stock, available for backorder

Manufacturer Product Number: 95000006
Taric: 85423990
Country of origin: CN

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VC-02 is a low-cost pure offline speech recognition module developed by Shenzhen Ai-Thinker Technology Co., Ltd. The module uses the voice chip US516P6 launched by Unisound, and continuously optimizes and innovates algorithms in speech recognition technology. The offline recognition algorithm and chip architecture are deeply integrated to provide customers with ultra-low-cost offline speech recognition solutions. It can be widely and quickly applied to smart home, all kinds of smart small household appliances, 86 boxes, toys, lamps and other products that need voice control. The US516P6 chip uses a 32-bit RSIC architecture core and incorporates a DSP instruction set specifically for signal processing and speech recognition, an FPU arithmetic unit that supports floating-point operations, and an FFT accelerator. VC-02 supports offline identification of 150 local instructions, RTOS lightweight system, rich peripheral interfaces, and simple and friendly custom tools.


  • 32bit RISC core, running at 240MHz
  • Support DSP instruction set and FPU floating-point operation Unit
  • FFT Accelerator: Support 1024-point complex FFT/IFFT operations, or 2048-point real
  • FFT/IFFT operations
  • Unisound customized speech algorithm operator
  • Built-in 242KB high-speed SRAM
  • Built-in 2MB FLASH
Audio input and output:
  • Supports 1 analog Mic input, SNR = 94dB
  • Support 4-channel digital Mic input
  • Support dual-channel DAC output
  • Supports I2S input/output
Power supply and clock:
  • Support 3.6 V-5V Range Power Input
  • Built-in 5V to 3.3V,3.3V to 1.2V LDO power the chip
  • RC 12MHz clock source and PLL locked loop clock source
  • Built-in POR(Power on Reset), low voltage detection and watchdog
  • All GPIOs can be configured as external interrupt input and wake-up source
  • 1 full-duplex UART with a maximum rate of 3Mbps.
  • Support SPI, I2C, ADC, PWM interface
  • Provides complete RTOS-based SDK
  • Support fast and convenient UART, I2C and other control protocol development


  • Model: VC-02
  • Package: SMD-20
  • Size: 18*17*3.2 (± 0. 2) mm
  • Working Temperature: -40 °C ~ 85 °C
  • Storage Environment: -40 °C ~ 125 °C, <90% RH
  • Power Supply: Supply Voltage 3.6 V-5 V, Supply Current> 500mA
  • Interfaces: UART/I2C/PWM/SPI/GPIO
  • IO: 10
  • UART Rate: Default 115200 bps
  • SPI Flash: 2MB (built-in)

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This depends on where you are located. After the order is handed over to UPS, the delivery time in Germany is about 2-3 days, within Europe about 1 week.

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