MEMORY ORGANIZATION IN 8051
ARCHITECTURE OF 8085
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
When the EA Pin is high
|
|
The cpu fetches instructions from the Internal Program Memory and then from the external program Memory.
|
|
|
The cpu fetches instructions from the Internal Program Memory
|
|
|
The cpu fetches instructions from the external program Memory.
|
|
|
None of these
|
Explanation:
Detailed explanation-1: -Pin 30 − This is EA pin which stands for External Access input. It is used to enable/disable the external memory interfacing.
Detailed explanation-2: -PIN 31 is called external Access Enable (EAE) Pin and used for external program memory access.
Detailed explanation-3: -For this scenario, the EA Pin must be connected to GND. In this case, the memory addresses of the external ROM will be from 0000H to FFFFH.
There is 1 question to complete.