Interested to Buy Any Domain ? << Click Here >> for more details...
What is ALE? Explain the functions of ALE in 8085.
- 17 Answers
- 162211 Views
- I also Faced
- E-Mail Answers
Answer Posted / k. k. ghosh
8085 processor has 16 address lines for 16 bit address of a
memory location. Out of this 16 address lines 8 adress
lines are solely dedicated to transfer 8 higher order
address bits while the remaining lower order 8 bits of the
address are sent through another 8 lines multiplexed with
the 8 bit data lines. It is the control signal ALE to be
sent by the processor in appropriate time to indicate the
operation of this 8 bit multiplexed bus whether it will be
used to send the lower order 8 address bits or to send the
8 data bits. How it is indicated ? Making ALE control HIGH
the multiplexed 8 bit bus will act as address bus while
making ALE control LOW the same 8 bit multiplexed bus will
act as data bus. Thus, ALE = 1 makes the address latched
i.e. latch enable and ALE = 0 makes the adress bus disable
but making it data bus enable. In this sense, this 8 bit
bus better should be said as data bus.
| Is This Answer Correct ? | 245 Yes | 22 No |
Post New Answer View All Answers
How many bit microprocessor is the 8086 microprocessor?
What is lst file?
How many logical drives is it possible to fit onto a physical disk?
Define the architecture of the 8085 microprocessor?
What is a stack pointer register?
Can port 0 be used as input output port?
Comment the size of stack?
What is the purpose of clk signals of 8085?
How do vectored and non-vectored interrupts differ?
After the following has been executed MOV BL, 8C MOV AL, 7E ADD AL, BL; what will be the contents of register AL?
What are the total number of input and output ports in 8085?
What are set up time & hold time constraints?
Explain all the addressing modes of the 8085 with the help of examples.
Can an rc circuit be used as clock source for 8085?
What jobs alu of 8085 can perform?
