This part is a kind of semiconductor called 80C188EB25.

Function of this product has 16-BIT HIGH-INTEGRATION EMBEDDED PROCESSORS.

Manufacturers : Intel Corporation

Image and pinout :

Some of the text within the PDF file :

80C186EB 80C188EB AND 80L186EB 80L188EB 16-BIT HIGH-INTEGRATION EMBEDDED PROCESSORS X Y X Full Static Operation True CMOS Inputs and Outputs Y Integrated Feature Set Low-Power Static CPU Core Two Independent UARTs each with an Integral Baud Rate Generator Two 8-Bit Multiplexed I O Ports Programmable Interrupt Controller Three Programmable 16-Bit Timer Counters Clock Generator Ten Programmable Chip Selects with Integral Wait-State Generator Memory Refresh Control Unit System Level Testing Support (ONCE Mode) Direct Addressing Capability to 1 Mbyte Memory and 64 Kbyte I O Speed Versions Available (5V) 25 MHz (80C186EB25 80C188EB25) 20 MHz (80C186EB20 80C188EB20) 13 MHz (80C186EB13 80C188EB13) Available in Extended Temperature Range ( b 40 C to a 85 C) Speed Versions Available (3V) 16 MHz [ ... ]

80C188EB25 PDF Datasheet Download