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This port only exists on the the TI-84 Plus and the TI-84 Plus Silver Edition. On the standard TI-83 Plus, it acts as a shadow of port 02. On the TI-83 Plus Silver Edition, this port has no effect.


Port Number: 52h

Function: Charge pump enable timer

This has something to do with the timing of when the charge pump is enabled. Timed like port 51.