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The pin that is grounded for interfacing external EPROM is

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in Microprocessor by (39.4k points)
The pin that is grounded for interfacing external EPROM is

(a) EA(active low)

(b) PSEN(active low)

(c) OE(active low)

(d) All of the mentioned

This question was addressed to me during a job interview.

Question is taken from Interfacing With 8051 Ports -2 in division Microcontroller 8051 of Microprocessor

1 Answer

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by (49.2k points)
The correct option is (a) EA(active low)

The best I can explain: The EA(active low) pin is grounded for interfacing external EPROM. The PSEN(active low) is used for interfacing EPROM i.e. it acts as an OE(active low) input to EPROM.

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