This part is a kind of semiconductor called ADAM27P16.

Function of this product has 4-BIT SINGLE CHIP MICROCOMPUTERS.

Manufacturers : ABOV

Image and pinout :

Some of the text within the PDF file :

July 10, 2012 Ver 1.1 4-BIT SINGLE CHIP MICROCOMPUTERS ADAM27PXX USER`S MANUAL • ADAM27P08 • ADAM27P16 1. Overview ADAM27PXX 1. OVERVIEW The ADAM27PXX is remote control transmitter which uses CMOS technology. The ADAM27PXX is suitable for remote control of TV, VCR, FANS, Air-conditioners, Audio Equipments, Toys, Games etc. The ADAM27PXX is MTP version. 1.1. Features ■ Program memory ● 2,048 bytes (2,048 x 8bit) ● MTP(Multi Time Programming) : 1K * 2, 2K * 1 ■ Data memory (RAM) ● 32 nibble (32 x 4bit) ■ 3 levels of subroutine nesting ■ 8-bit Table Read Instruction ■ Oscillator Type (Operating frequency) ● Internal RC Oscillator (typically 3.64MHz) ■ Instruction cycle ● fOSC/48 ■ Stop mode ■ Released stop mode by key input ■ Built in Power-on Reset circuit [ ... ]

ADAM27P16 PDF Datasheet Download