Quasi-bidirectional port - Characteristics

Q.  Which among the below mentioned statements are precisely related to quasi-bidirectional port?

a. Fixed high pull-up resistors are internally connected
b. Configuration in the form of input pulls the port at higher position whereas they get pulled lower when configured as a source current
c. It is possible to drive the pin as output at any duration when FET gets turned OFF for an input function
d. Upper pull-up FET is always OFF with the provision of 'open-drain' output pin for normal operation of port

- Published on 09 Nov 15

a. A, B, C, D
b. A, B & C
c. A & B
d. C & D


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