MicroProcessor - What is the function of ALE in 8085 ?

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What is the function of ALE in 8085 ?

Total Answers and Comments: 9

Last Update: August 23, 2007

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Submitted by: Abhinav Prateek

ALE( Address Latch Enable)

this is a signal which goes HIGH everytime 8085 begins an operation. it indicates that the bits on AD0 to AD7 are address bits.

this signal is mainly used to latch the low order address from the multiplexed bus.

Above answer was rated as good by the following members:
judit

April 30, 2005 20:40:02

venkatesan

RE: What is the function of ALE in 8085 ?

In 8085 there is one common bus for data memory as well as program memory.
ale is used to select the bus as address and data bus

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July 15, 2005 02:23:42

dfhhhhhhh

RE: What is the function of ALE in 8085 ?

uses bus as address and data bus

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August 22, 2005 23:35:16

vignyan

RE: What is the function of ALE in 8085 ?

Address Latch Enable is used for multiplexing higher order address bus and the data bus

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October 09, 2006 15:22:30

smokindesi

RE: What is the function of ALE in 8085 ?

used to acess external memory.

also used in 8051 and compatible microcontrollers

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October 13, 2006 09:21:20

anithaarulraj

Member Since: October 2006 Contribution: 4

RE: What is the function of ALE in 8085 ?

ALE controls the set of latches or flipflops in 8085

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October 27, 2006 10:37:37

hardik parikh

RE: What is the function of ALE in 8085 ?

hi i think it is ALU. and it is airithmatic logical unit which is used by processor to compute many airithmatic & logical function by it. a part of processor

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November 25, 2006 14:14:18

Rana Debnath

RE: What is the function of ALE in 8085 ?

ALE: Address latch enable: This is a positine going pulse generated everytime the 8085 begins an operation(machine cycle);it indicates that the bits on AD7-ADo are address bits.This signal is used primarily to latch the low -order address from multiplexed bus and generate a separate set of eight address lines A7-Ao.

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January 17, 2007 01:24:52

RE: What is the function of ALE in 8085 ?

ALE is an active high pin. when we supplied active high pulse to this pin this pin is activated. When this pin is activated it de-multiplex lower address bus (A0-A7) from lower adress / data bus(AD0-AD7).

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August 22, 2007 13:33:20

Abhinav Prateek

RE: What is the function of ALE in 8085 ?

ALE( Address Latch Enable)

this is a signal which goes HIGH everytime 8085 begins an operation. it indicates that the bits on AD0 to AD7 are address bits.

this signal is mainly used to latch the low order address from the multiplexed bus.

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