Digital Electronics - The 8051 Microcontroller - Discussion

Discussion Forum : The 8051 Microcontroller - General Questions (Q.No. 53)
53.
An alternate function of port pin P3.0 (RXD) in the 8051 is:
serial port input
serial port output
memory write strobe
memory read strobe
Answer: Option
Explanation:
No answer description is available. Let's discuss.
Discussion:
2 comments Page 1 of 1.

Ravi said:   1 decade ago
Which is the best site to learn microprocessor 8085?

Pankaj said:   1 decade ago
P3.0 and P3.1 are for serial mode communication. P3.0 (RxD) receives the serial data given at the port and P3.1 (TXD) transfers the serial data through the port. So RXD is serial port input whereas TXD is serial port output.

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