Play-a-Sound's "Scooby-Doo! Where Are You" contains a Sunplus PA5280 
Opening the electronics
PCB has a Chip on Board (COB). These are common in high volume electronics manufacturing to reduce costs. Unfortunately this means there are no package markings
I cut the COB out of the PCB to save on decap time. Apparently I nicked the die corner though
Bare die. Aluminum bond wire nubs can be seen if you look carefully around the padframe
I plucked bond wires by using foam swabs to catch the wires and fatigue them until they broke off
I plucked bond wires by using foam swabs to catch the wires and fatigue them until they broke off
Chip markings. I couldn't find references to this chip, although I didn't look too hard
Quick floorplan guess
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