Question

Which I O port can be used for higher address byte?¿

Answer 1

$\large\tt\pink{~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ Port-2}$

Port-2 is used for higher external address byte or a normal input/output port. The I/O operation is similar to Port-1. Port-2 latch remains stable when Port-2 pin are used for external memory access.

Answer 2

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PORT2

• PORT2 : This port can be used for higher address byte with addresses A8-A15.