89C51 dotaz

Jozef Maslík jozefmaslik at nextra.sk
Thu May 3 23:01:42 CEST 2001


Port 0 je z tranzistorou s otvorenym kolektorom, ak teda chces mat
vysokoimpedancny vstup, treba programom zapisat na port0 log 1 (uroven H).

----- Original Message -----
From: "Joe" <waking at centrum.cz>
To: "Multiple recipients of list" <hw-news at list.gin.cz>
Sent: Thursday, May 03, 2001 10:02 PM
Subject: 89C51 dotaz


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> Delam si programator 51 a potreboval byvh od vas poradit s jednou =
> zalezitosti, od atmelu jsem si stahl popis a pisou tam ze pokud   port 0 =
> nastavim do H urovne, pak slouzi tento port jako vysoko ohmovy vstup, =
> ale nevim, jestli ho mam nastavit programove, ci pripojit p0 na H.
> diky joe
>
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> <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
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> <DIV><FONT face=3D"Arial CE" size=3D2>Delam si programator 51 a =
> potreboval byvh od=20
> vas poradit s jednou zalezitosti, od atmelu jsem si stahl popis a pisou =
> tam ze=20
> pokud&nbsp;&nbsp; port 0 nastavim do H urovne, pak slouzi tento port =
> jako vysoko=20
> ohmovy vstup, ale nevim, jestli ho mam nastavit programove, ci pripojit =
> p0 na=20
> H.</FONT></DIV>
> <DIV><FONT face=3D"Arial CE" size=3D2>diky =
> joe</FONT></DIV></BODY></HTML>
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