Features:
1, the product features
- Products for WTV020 chip module plug the SD card, supports 32M ~ 1GBit capacity card; 
- Supports the FAT file system, SD card as storage medium; 
- And supports playback of WAV format files 4Bit ADCPM; 
- Supports automatic speech recognition folders and file playback; 
- You can play background music and commercials language; 
- Control methods are key control, second control and UART232 serial control; 
- WTV master chip has WTV020-16SOP and WTV020-20SOP two packages, both of which are compatible; 
- You can play any segment of speech; 
- Operating voltage: DC2.6 ~ 3.6V; 
- Classified by folder store content, easy to operate. 
2 Product Overview
- WTV020 plug-in SD card Voice module, the main chip selection WTV020-16S and WTV020-20S package chips. Voice updates directly through an SD card reader on a PC replacement. Control is also an SD card stored in TXT file changes. The module supports the FAT file system. Support and ADPCM WAV file playback. Supports two-wire serial control mode, key methods and UART232 serial manner. Automatic speech recognition and speech sample rate format.