This part is a kind of semiconductor called MB90F349CAS.

Function of this product has 16-bit Proprietary Microcontroller CMOS.

Manufacturers : Fujitsu Media Devices

Image and pinout :

Some of the text within the PDF file :

FUJITSU SEMICONDUCTOR DATA SHEET DS07-13730-3E 16-bit Proprietary Microcontroller CMOS F2MC-16LX MB90340 Series MB90F342A(S), MB90F342CA(S), MB90F343A(S), MB90F343CA(S), MB90F345A(S), MB90F345CA(S), MB90F346A(S), MB90F346CA(S), MB90F347A(S), MB90F347CA(S), MB90F349A(S), MB90F349CA(S), MB90341A(S), MB90341CA(S), MB90342A(S), MB90342CA(S), MB90346A(S), MB90346CA(S), MB90347A(S), MB90347CA(S), MB90348A(S), MB90348CA(S), MB90349A(S), MB90349CA(S), MB90V340A-101/102 s DESCRIPTION The MB90340-series with up to 2 FULL-CAN* interfaces and FLASH ROM is especially designed for automotive and other industrial applications. Its main feature are the on-board CAN Interfaces, which conform to V2.0 Part A and Part B, while supporting a very flexible message buffer scheme and so of [ ... ]

MB90F349CAS PDF Datasheet Download