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ALE=Address Latch Enabled.(pin number 30 in 8085)
8085 has a special pin referred as ALE, which indicates whether multiplex bus functions as an address bus or a data bus. Whenever 8085 starts any new operation, ALE signal goes to logic 1 for about 1/2 clock cycle, at about the falling edge of CLK. If ALE=1 then multiplex bus functions as address bus. After that half clock cycle, it goes to logic 0 for nearly 3 or 4 clock cycles. If ALE=0 then multiplex bus acts as a data bus.
The ALE pin helps to enable the latching of lower order ADDR bus. The AD0-AD7 pins, as well as other control pins such as S0, S1, IO/M-, and the other address pins A8-A15, are setup to be correct at the falling edge of ALE.
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What is a 8085 microprocessor?
with neat diagram explain the system bus structure of 8085
Where can you download book on microprocessor 8085?
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How many location can be accessed by 8085 microprocessor?
The 8085 microprocessor can access 65536 (2^16) locations in memory, and 256 (2^8) locations in I/O space.
What is h-L in the Intel 8085?
HL is a register pair that is used to store 16-bit data in 8085 Microprocessor
Objective type questions and their answers related microprocessor 8085?
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Why the name 8085 Why the name 8085 for microprocessor?
8085 is a microprocessor designed by Intel
What do '8085' in 8085 Microprocessor signify?
The '8085' in the 8085 microprocessor is the designation given to the microprocessor by Intel. The '5' means it is a single power supply (5 volt) version of the 8080, with enhancements.
What power supply is used in microprocessor 8085 programming?
+5v necessary for microprocessor 8085.
What is the Overview of 8085 microprocessor?
8085 is a 8 bit microprocessor designed by Intel Co.
What is a 8085 microprocessor?
with neat diagram explain the system bus structure of 8085
What is crystal in microprocessor 8085?
crystal is a oscilltor in microprocessor
What is themeaning of pipe lines for 8085 microprocessor?
The 8085 is not pipelined.
Prime numbers between 1 to 10 in microprocessor 8085?
program to find prime number in 8085 microprocessor
How many power supply uses in 8085 microprocessor?
+5v supply is alone needed for Intel 8085 Microprocessor
What is HL pair in 8085 microprocessor?
HL is a register pair used to store 16 bit of data in 8085 microprocessor.
How many instruction are there in 8085 mp?
There are 74 instructions in the 8085 microprocessor.
When trap interrupt line is checked by 8085 microprocessor?
In the 8085, trap, intr, and rstx.5 lines are checked on the falling edge of clock, at the beginning of the last T cycle of an instruction, or approximately one clock cycle before ALE.
