Author Question: In terms of external data memory, the 8051 allows A) 512 k of external data memory (RAM). B) 64 k ... (Read 78 times)

ashley · **on:** Jul 28, 2018

In terms of external data memory, the 8051 allows

A) 512 k of external data memory (RAM). B) 64 k of external data memory (RAM).
C) 256 k of external data memory (RAM). D) 128 k of external data memory (RAM).

Question 2

What is the function of ALE/ ?

A) It is an Adding Latch Enable output pulse for latching the low-order byte of the address during accesses to internal memory.
B) It is an Address Latch Enable input pulse for latching the high-order byte of the address during accesses to external memory.
C) It is an Address Latch Enable output pulse for latching the low-order byte of the address during accesses to external memory.
D) all of the above