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Lpc2000

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Re: [lpc2000] LED & Button connection

2006-05-29 by Иван Кончаловский

Hello All.

>   I have two questions for you:
>   1. Is it possible to connect LED (super bright 1mA) to port pin
>   without additional current limiting resistor?
>   2. Is it possible to connect button between port pin and
>   ground while configuring this port pin as output with
>   high level and read its state (button pressed or not)?

First of all thanks to everybody for your answers.

Secondly i am not a newby in electronics and MCUs (as i
think). So why i was asking this question? Lately i worked
with PIC18 MCU, as you probably know it has port B with
internal pull-up resistors. I use to connect buttons and
LEDs to it without any resistors (of course). In Philips`
datasheets i found no port schematics and decided to ask in
this conference.

-- 
Best regards,
 Hummel

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