IC Friday: MSI46266 (Winbond RB5734?)

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This weeks entry is a 48-LQFP chip labeled Msi M5-46266 that came off a Pentium4 mainboard. Looking at the die, find it can be seen that this is actually Winbond chip. The part number doesn’t match up on their site, however, the large driving circuitry on the pins makes me guess that it is some kind of host controller or a clock generator.

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