AI-Thinker VC-02-Kit Development Board

The VC-02-Kit is a development board designed for the VC-02 module, and it is shared the same board with VC-01-Kit. The development board integrates CH340C serial port to USB chip, providing basic debugging interface and USB upgrade interface, design of wake up light and cold and cooling lamp, provides status indication and control instructions, and easy to debug the simple control function. 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.

Features:

Kernel:

• 32bit RISC core, running at 240MHz
• Support DSP instruction set and FPU floating point operation unit
• FFT Accelerator: Support up to 1024-point complex FFT/IFFT operations, or 2048-point real FFT/IFFT operations
• Unisound customized speech algorithm operator

Storage:

• Built-in 242KB high-speed SRAM
• Built-in 2MB FLASH

Audio input and output:

• Flexible configuration supports 1.8/2.8/3.3V IO
• Support for a 1 analog Mic input, SNR=94db
• Support dual-channel DAC output
• Support for both Chinese and English voice commands

Power supply and clock:

• Support 5V power input
• Built-in 5V to 3.3V, 3.3V to 1.2V LDO to power the chip
• RC 12MHz clock source and PLL locked loop clock source
• Built-in POR (Power on Reset), low voltage detection and watchdog

Peripheral:

• All GPIOs can be configured as external interrupt input and wake-up source
• One full-duplex UART with the maximum rate of 3Mbps
• Support I2C,DAC,PWM and multiple interfaces

SDK:

• Provides complete RTOS SDK
• Support fast and convenient UART, I2C and other control protocol development

Specifications:

• Dev-board Model: VC-02-Kit
• Module: VC-02
• Package: DIP-19(2.54 spatial standard pin header)
• Size: 42.2*35.6(±0.2)mm
• Working Temperature: -40 °C ~ 85 °C
• Storage Environment: -40 °C ~ 125 °C , < 90%RH
• Power Supply: Supply voltage 5V, current greater than 500mA
• Interfaces: UART/I2C/PWM/DAC/GPIO
• IO: 5 GPIOs
• UART Rate: UART1 default 115200 bps?UART0(IOB8) default 57600
• Flash: 2MB (built-in)
• Support Language: Chinese and English (factory default Chinese firmware)