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    Microcontroller output high and low

    Does the microcontroller output varies only between high and low? ex. high means 5V and low means 0V? Thanks in advance..

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    Re: Microcontroller output high and low

    Hi,

    The answer you find in the datasheet.

    We don't know microcontroller type, nor it's periferals, nor it's supply voltage, not the load current at the IO....
    So it is impossible for us to give a good answer.

    Klaus



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    Re: Microcontroller output high and low

    Quote Originally Posted by KlausST View Post
    Hi,

    The answer you find in the datasheet.

    We don't know microcontroller type, nor it's periferals, nor it's supply voltage, not the load current at the IO....
    So it is impossible for us to give a good answer.
    I am using XE161XL, and it have so many parametric values and not quite familiar with those.. its kinda hard for me to identify which might be my voltage and current output once the microcontroller output terminal is high or low..



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  4. #4
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    Re: Microcontroller output high and low

    Hi,

    either me or you has to read the datasheet. I prefer that you read it.

    From your first post i assume VCC = 5V.
    Usually there are shortcuts. (open the datasheet as pdf, go to the "electrical operating specifications" section.)

    Do a search on:
    V_OL = Voltage output low
    V_OH = Voltage output high
    I_OL = output sink current
    I_OH = output source current

    ..and read the "test parameters" to the specified values.

    Klaus



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