WCH CH340T SSOP-20 USB Interface Chip
SKU: 182419
PDF Datesheet:
http://wenku.baidu.com/link?url=6tcJ9kkC8SRkYTpLuhqweiz3oJm3cE_uRvRvFsozBGBWulUrwN4kEQvaPVF_uCxel9rPi_sNeeLx04YYBBK4ume8n4tXcU2Q6vhP9BJZiBi
SKU: 182419
PDF Datesheet:
http://wenku.baidu.com/link?url=6tcJ9kkC8SRkYTpLuhqweiz3oJm3cE_uRvRvFsozBGBWulUrwN4kEQvaPVF_uCxel9rPi_sNeeLx04YYBBK4ume8n4tXcU2Q6vhP9BJZiBi