On which port does the 8051 output address bits A15-A8 Which signal from the 8051 indicates...
On which port does the 8051 output address bits A15-A8
Which signal from the 8051 indicates that port 0 is currently outputting address bits A7-A0?
Homework Answers
1. On which port does the 8051 output address bits A15-A8.
Ans. Port 2 is used to output higher address bytes from A8-A15.
2. Which signal from the 8051 indicates that port 0 is currently outputting address bits A7-A0?
Ans. In 8051 port 0 multiplexes outputs A0-A7 and AD0-AD7 , ALE (Address Latch Enable) pin (pin 30) is used to differentiate this. When ALE pin is High port 0 outputs data bus ie,AD0-AD7 when ALE pin is Low outputs lower address bytes ie,A0-A7.
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On which port does the 8051 output address bits A15-A8
Which signal from the 8051 indicates...
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