VC-01 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-01 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 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:

• 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

Peripheral:

• 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

SDK:

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

Features:

• Model VC-01
• Package SMD-24
• Size: 25.5*24*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 12
• UART Rate Default 115200 bps
• SPI Flash 2MB (built-in)