Digital Electronics - The 8051 Microcontroller - Discussion
Discussion Forum : The 8051 Microcontroller - General Questions (Q.No. 34)
34.
When the 8051 is reset and the EA line is LOW, the program counter points to the first program instruction in the:
Discussion:
6 comments Page 1 of 1.
GVbro said:
8 years ago
Since the external address is made 0 it communicates with the external memory for code.
Asis said:
9 years ago
-->ROM /Program memory / code memory divided into External(60kb) and Internal(4kb).
-->when EA =0 means EA = 1 means External Access.
-->when EA =1 means EA = 0 means Internal Access.
-->when EA =0 means EA = 1 means External Access.
-->when EA =1 means EA = 0 means Internal Access.
Samar said:
1 decade ago
How can sub 143 h from 227 h for 8051? Please help me.
A ADITHYA said:
1 decade ago
It is external code memory because when EA bar is low means EA is high so it will access data from external code section only.
Jayesh said:
1 decade ago
Here EA bar is low mean EA is 1... so external memory...(may be)..
Dinesh_vector said:
1 decade ago
I think it should be a PSEN (low) line.
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