This part is a kind of semiconductor called AT42QT1010.

Function of this product has One-channel Touch Sensor IC.

Manufacturers : ATMEL Corporation

Image and pinout :

Some of the text within the PDF file :

Features • Number of Keys: – One – Configurable as either a single key or a proximity sensor • Technology: – Patented spread-spectrum charge-transfer (direct mode) • Key outline sizes: – 6 mm x 6 mm or larger (panel thickness dependent); widely different sizes and shapes possible • Electrode design: – Solid or ring electrode shapes • PCB Layers required: – One • Electrode materials: – Etched copper, silver, carbon, Indium Tin Oxide (ITO) • Electrode substrates: – PCB, FPCB, plastic films, glass • Panel materials: – Plastic, glass, composites, painted surfaces (low particle density metallic paints possible) • Panel thickness: – Up to 12 mm glass, 6 mm plastic (electrode size and Cs dependent) • Key sensitivity: – Settable via capacitor (Cs) • Inte [ ... ]

AT42QT1010 PDF Datasheet Download