What is ALE? Explain the functions of ALE in 8085.
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Answer / sunil jaiswal
ALE means Address Latch Enable.
ALE is a control signal of 8085 microprocessor.8085 has 16
bit address bus(A15-A0) and lower (A0-A7) address are multiplexed
with data bus (D0-D7) which need to demultiplexed or
separate the data bus and address bus.
That means ALE use for separate the (AD0-AD7) bus to (A0-A7)
Now we can use this as an address bus
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Answer / ayush
ALE is used for output. It is an address latch enable signals. It goes high during g the clock cycle of the machine cycle and enables the lower 8 bits of the address to be latched either into the memory or external memory.
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Answer / kiran
it is a time multiplexed bus sometimes it is uses for data
and some times it is used for address that is to change the
state from lower order address to data
| Is This Answer Correct ? | 2 Yes | 3 No |
Answer / dhanashree arun ghadage
1) address latch enable, one special output signal generated by microprocessor to indicate begining of operation.
2) it is positive going pulse generated during 1st clock cycle of machine state & it's indicate that the bits on AD7-AD0 are address bits.
3) this signals enable to lower 8-bit of the address from the multiplexed bus to latch into external flip- flop or peripheral devices .after AD0-AD7 changes over to data bus .
4) ale is never tristated.
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Answer / manoj humagain
ALE stand for address latch enable in 8085 microprocessor!!! it has 16 bit address line where lower 8 bit lines are multiplexed with the 8 data lines so when ALE is enabled then it works as the address line and if it is disabled then it will work as data line.
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Answer / asif
To latch low order address from Bus to separate A0-A7 lines
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Answer / arvind
ALE is address latch enable. the lower order address remains
only for a single T satate then ths data is latched and the
lower order address bus stores the data.
| Is This Answer Correct ? | 31 Yes | 42 No |
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