Bernd R=FCter wrote:
> This "weak"-pullups are maybe aquivalent to a 10k resistor.
>
> Palaniappan C schrieb:
>> Hi all,
>> What is weak pullup ? The strength 'strong' or 'weak' related to =

>> voltage level or current level ?
>> I am using PIC18f2525 and datasheet gives only 'weak' pullup current
>> and not resistor value,  Why it is ?.
>> My another doubt is , Weak pullups are done by resistors or active =

>> components  ? ( Because, In academics, i have read somewhere , it is =

>> difficult to fabricate passive components on IC than active components).
>>
>> regards,
>> palani.
>>
My measurements, done several years ago, simply setting the port I/O as =

input and pulled down through a  10.0K 1% resistor and using scope =

measurements, gave me a value of approx 53K. But since they don't =

guarantee these values, they could have easily changed. I can't imagine =

it being very low, however.


--Bob
-- =

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