89C51 dotaz

Středa Březen 17 12:02:51 CET 2004

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

> This is a multi-part message in MIME format.
>
> ------=_NextPart_000_002A_01C0D41C.4626E1E0
> Content-Type: text/plain;
> charset="iso-8859-2"
> Content-Transfer-Encoding: quoted-printable
>
> 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
>
> ------=_NextPart_000_002A_01C0D41C.4626E1E0
> Content-Type: text/html;
> charset="iso-8859-2"
> Content-Transfer-Encoding: quoted-printable
>
> <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
> <HTML><HEAD>
> <META content=3D"text/html; charset=3Diso-8859-2" =
> http-equiv=3DContent-Type>
> <META content=3D"MSHTML 5.00.2614.3500" name=3DGENERATOR>
> <STYLE></STYLE>
> </HEAD>
> <BODY bgColor=3D#ffffff>
> <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>
>
> ------=_NextPart_000_002A_01C0D41C.4626E1E0--
>