U2
NEC µPD4632512F1
RAM
Main memory
About this component
This PSRAM is the 4 MB main memory shared by both ARM cores over a 16-bit bus. It appears to be a Nintendo-specific variant, since NEC did not list this exact part number publicly. RAM faults usually show as white screens or crashes at boot.
What it does on this board
4MB of pseudo-static RAM.
Pinout & readings
No pinout or reference readings yet — these show what each pin does and what a healthy part should measure.