This part is a kind of semiconductor called BT33.

Function of this product has Bluetooth module.

Manufacturers : Amped RF

Image and pinout :

Some of the text within the PDF file :

BT33 Datasheet Amp’ed RF Technology, Inc. Free Datasheet http:// June 23, 2011 BT33 Product Specification Features Bluetooth features        FCC & Bluetooth licensed radio Bluetooth v3.0 Class 1.5 radio Range up to 50m LOS 1.5Mbps data throughput 128-bit encryption security Multipoint capability up to 7 slaves 11.6mm x 13.5mm Hardware configuration          Cotex-M3 microprocessor up to 72MHz 256K bytes flash memory 48K bytes RAM memory UART, up to 2.25M baud SPI and I2C interfaces 7 general purpose I/O 5x12-bit A/D inputs 1 DAC outputs 1 LPO input Description Our micro-sized Bluetooth module, with integrated antenna, is the smallest form factor available providing a complete RF platform. The BT33 is designed for [ ... ]

BT33 PDF Datasheet Download