What is ALE? Explain the functions of ALE in 8085.
- 17 Answers
- 155329 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
What is the maximum supported clock speed of the 8086?
What are the data pins of microprocessors? What is their use?
How many interrupts are there in 8085?
What does 8088 microprocessor have?
What are the total number of input and output ports in 8085?
why 8085 processor is called an 8 bit processor?
How to control and timing circuitry of the 8085.
In 8085 which is called as high order / low order register?
What are Pseudo instructions basically?
Can you tell how many pins are there in 8085 Microprocessor?
What is the maximum size of segment in 8086 microprocessor?
What are the four distinct types of memory in 8051?
Explain transmission gate-based d-latch?
Define the jobs performed by the biu and eu in the 8086.
Explain the instruction stream queue mechanism in the 8086?
