This part is a kind of semiconductor called MB90F455.

Function of this product has (MB90455 - MB90495) 16-bit Proprietary Microcontroller.

Manufacturers : Fujitsu Media Devices

Image and pinout :

Some of the text within the PDF file :

FUJITSU SEMICONDUCTOR DATA SHEET DS07-13728-3E 16-bit Proprietary Microcontroller CMOS F2MC-16LX MB90455 Series MB90F455 (S) /F456 (S) /F457 (S) MB90455 (S) /456 (S) /457 (S) /V495G s DESCRIPTION MB90455 series devices are general-purpose high-performance 16-bit micro controllers designed for process control of consumer products, which require high-speed real-time processing. The system, inheriting the architecture of F2MC* family, employs additional instruction ready for high-level languages, expanded addressing mode, enhanced multiply-divide instructions, and enriched bit-processing instructions. Furthermore, employment of 32-bit accumulator achieves processing of long-word data (32 bits). The peripheral resources of MB90455 series include the following: 8/10-bit A/D converter, UART 1 [ ... ]

MB90F455 PDF Datasheet Download