This part is a kind of semiconductor called PC97551.

Function of this product has Embedded Controller.

Manufacturers : Winbond Electronics

Image and pinout :

Some of the text within the PDF file :

PC97551 Embedded Controller for Notebook Systems Product Brief February 2006 Revision 1.1 PC97551 Embedded Controller for Notebook Systems General Description The Winbond PC97551 is an embedded controller (EC) for mainstream notebook applications. It includes a highly optimized set of functions, which provide a hardware/firmware partition that enables the implementation of flexible solutions; and its high-performance CPU core enables EC functionality to be extended via the firmware. The PC97551 incorporates National’s CompactRISC CR16B core (a high-performance 16-bit RISC processor), internal ROM and RAM memories, system support functions and a Bus Interface Unit (BIU) that directly interfaces with both external memory (such as flash) and I/O devices. System sup [ ... ]

PC97551 PDF Datasheet Download