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Discussion Groups | LPC2000 | 5V GPIO output with single resistor
Discussion group dedicated to the Philips LPC2000 family of ARM MCUs
Re: 5V GPIO output with single resistor - Mukund Deshmukh - Oct 19 7:38:21 2006
>
> Rpullup = 10k; tr=2,3us
> Rpullup = 1k; tr=250ns
> Rpullup = 330ohm; tr=100ns
>
> Here's my question: will GPIO survive and operate relible over long time
> if I have 330 ohm pullup to 5V?
>
We are using the same scheme, but with 4.7K pull up to +5 volt since 2-3
months.
No damage or problem reported so far.
Best Regards,
Mukund Deshmukh.
Beta Computronics Pvt Ltd
10/1, IT Park, Parsodi,
Nagpur-440022, INDIA.
Cell +919422113746
(You need to be a member of lpc2000 -- send a blank email to lpc2000-subscribe@yahoogroups.com )
> Rpullup = 10k; tr=2,3us
> Rpullup = 1k; tr=250ns
> Rpullup = 330ohm; tr=100ns
>
> Here's my question: will GPIO survive and operate relible over long time
> if I have 330 ohm pullup to 5V?
>
We are using the same scheme, but with 4.7K pull up to +5 volt since 2-3
months.
No damage or problem reported so far.
Best Regards,
Mukund Deshmukh.
Beta Computronics Pvt Ltd
10/1, IT Park, Parsodi,
Nagpur-440022, INDIA.
Cell +919422113746
(You need to be a member of lpc2000 -- send a blank email to lpc2000-subscribe@yahoogroups.com )