This part is a kind of semiconductor called TTP223-BA6.

Function of this product has 1 KEY TOUCH PAD DETECTOR IC.

Manufacturers : TT

Image and pinout :

Some of the text within the PDF file :

Preliminary TTP223-BA6 1 KEY TOUCH PAD DETECTOR IC GENERAL DESCRIPTION The TTP223-BA6 is a touch pad detector IC which offers 1 touch key. The touching detection IC is designed for replacing traditional direct button key with diverse pad size. Low power consumption and wide operating voltage are the contact key features for DC or AC application. FEATURES ƒ ƒ ƒ ƒ ƒ ƒ ƒ ƒ ƒ ƒ ƒ Operating voltage 2.0V~5.5V Operating current @VDD=3V, no load At low power mode typical 1.5uA, maximum 3.0uA The response time max 220mS at low power mode @VDD=3V Sensitivity can adjust by the capacitance(0~50pF) outside Stable touching detection of human body for replacing traditional direct switch key Provides Low Power mode Provides direct mode、toggle mode by pad option(TOG pin) Q pin is CMOS outpu [ ... ]

TTP223-BA6 PDF Datasheet Download