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The difference between weak pull down/pull up and strong pul

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EDA_hg81

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strong and weak pull ups

Thanks.
 

weak pullup and strong pull up

less current goes in to the pin, I would not recomend to use them use , put one resistor at the pin will save you a lot's oh headache during debuging

Added after 2 seconds:

less current goes in to the pin, I would not recomend to use them use , put one resistor at the pin will save you a lot's oh headache during debuging
 

    EDA_hg81

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Re: weak pullup and strong pull up

thanks for the reply
 

A weak pullup will hold a value on a pin while all other drivers are in tri-state, and can be over-ridden by the value of the driver, once it starts driving. A strong pullup cannot be over-ridden by the driver, and will cause contention.
 

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