VC-01

Overview

The Ai-Thinker VC-01 is a high-performance, low-power offline voice recognition module designed for embedded voice interaction applications. It utilizes the US516P6 chip, featuring a 32-bit RISC core operating at 240 MHz with DSP instructions, FPU, and FFT acceleration. The module includes 2 MB Flash and 242 KB SRAM, supporting up to 150 local commands with a wake-up distance of 5 meters and an identification rate of ≥98%. It operates on a 3.6V to 5V supply, draws over 500 mA, and functions within a temperature range of -40°C to 85°C.

Feature Summary

• Supports offline keyword recognition without internet connectivity
• Features fast response time (<100 ms) and strong anti-interference capabilities
• Integrates single MIC input and dual-channel DAC output with built-in AEC and noise reduction
• Provides UART serial communication for compatibility with various host controllers

Applications

• Embedded voice interaction systems
• Smart home devices requiring offline control
• IoT products needing customized command sets

Procurement Notes

Verify the specific package variant (TR or CT) against project requirements. Confirm that the power supply design can handle current peaks exceeding 500 mA. Ensure the host MCU interface matches the UART pinout defined in the datasheet. Check environmental ratings for operation between -40°C and 85°C.

Selection Notes

Select the VC-01 when offline processing is required to avoid network dependency. The module supports customizable command groups, allowing adaptation to specific product needs. Consider the physical dimensions (approx. 25.5 × 24 × 3.2 mm) for enclosure design. Verify compatibility with the AI-Thinker voice development platform for firmware configuration.

Part Context

The VC-01 is part of Ai-Thinker's offline voice module series, which also includes the VC-02. Both modules share similar functional architectures but may differ in kit configurations or specific pin mappings. The VC-01 focuses on standalone offline recognition, while the broader series integrates with cloud services for hybrid solutions.

Replacement Considerations

The VC-02 is a related model within the same product family. Verify pin compatibility and software support before substitution. No direct cross-manufacturer substitutes are confirmed in public documentation.