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A 8-bit DAC is interfaced with a microprocessor having 16 address lines (A0 …. A15) as shown in the adjoining figure. A possible valid address for this DAC is

A 8-bit DAC is interfaced with a microprocessor having 16 address lines (A0 …. A15) as shown in the adjoining figure. A possible valid address for this DAC is Correct Answer 3000<sub>H</sub>

For enabling the decoder, chip select (C̅S̅) of decoder should be low and it is low when address lines A15 is low and for generation of chip select signal (C̅S̅) of DAC memory, the output line b2 is selected when address lines A14 = 0, A13 = 1

So, for selection of given DAC A15 = 0, A14 = 0, A13 = 1

∵ the microprocessor has sixteen address lines then possible address range for Given DAC can be as under,

[ alt="14.06.2018.071" src="//storage.googleapis.com/tb-img/production/18/06/14.06.2018.071.JPG">

So the range of the address of the of DAC can be from 2000H to 3FFFH

From the given option the address 3000H lies in the range of address of DAC.

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