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Identify the logic function of a layout

gonsays

Hello,

I'm a Microelectronics student and I'm in a struggle to understand which logic function is associated with the following layout:

It says that the circuit has four inputs (A and B) and one output (y), in an N-WELL TECHNOLOGY.

Thank you very much in advance and I'm sorry for my basic question for you

Parents

  • Hello Colin and Andrew, thank you very much for your time :)

    Thanks to your help I'm starting to get it, but I have only three more examples that I'm not sure if I'm right about the implemented logic function.

    With your expertise I'm sure that you can quickly identify the logic functions implemented.

    The first layout has two inputs (a,b) and two outputs (y1,y2) in an N-WELL technology and I'm not sure if this is a NAND?:

    It says that it has 2 outputs, so I'm not sure if it is really a NAND.

    The second layout is this one and I'm not sure if it is a XOR?:

    The third and final layout is this one, with two inputs (a,b) and one output (Y) in an N-WELL technology, what would be the logic function?:


     

    THANK YOU VERY MUCH again! I'm very grateful for your help and knowing the function of these 3 layouts will help me a lot understanding it, doing some reverse engineering.

    I'm a student of Introduction to Microelectronics, so I'm very sorry for my basic questions, but your answers are helping me to make a progress :)

Reply

  • Hello Colin and Andrew, thank you very much for your time :)

    Thanks to your help I'm starting to get it, but I have only three more examples that I'm not sure if I'm right about the implemented logic function.

    With your expertise I'm sure that you can quickly identify the logic functions implemented.

    The first layout has two inputs (a,b) and two outputs (y1,y2) in an N-WELL technology and I'm not sure if this is a NAND?:

    It says that it has 2 outputs, so I'm not sure if it is really a NAND.

    The second layout is this one and I'm not sure if it is a XOR?:

    The third and final layout is this one, with two inputs (a,b) and one output (Y) in an N-WELL technology, what would be the logic function?:


     

    THANK YOU VERY MUCH again! I'm very grateful for your help and knowing the function of these 3 layouts will help me a lot understanding it, doing some reverse engineering.

    I'm a student of Introduction to Microelectronics, so I'm very sorry for my basic questions, but your answers are helping me to make a progress :)

Children
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