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RS232 & MAX232 serial communication

waqar zaka


Iam connecting microcontroller 8051 with my PC COM1 port to have serial communication. To have same voltage levels between PC and 8051 i have used MAX232 but i need to know what other components like capacitors and resistor i need to connect in between controller and MAX232. i have the data sheet but information is limited.

so can any one suggest capacitor value and quanity and other minor components.

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  • 0 in reply to Jon Ward

    Here's my $0.02 USD.

    It seems most of the offenders fall into one or both of two categories -- the clueless and the I-wanna's/gimme's (CMS says apostrophizing in this context is acceptable).

    The clueless should be tolerated so that they may get one.

    The I-wanna's/gimme's should not be tolerated for very long. Those who have what wanna's want should be proactive and put their offerings up on a Web/FTP site and simply link to it, and not be reactive by having to "poll" the threads to see if anybody new needs something.

    So there you have it:

    • Let the "clueless" threads live unless they are truly incomprehensible
    • Kill the "I-wanna/gimme" threads after a short time
    • Kill the "I have what wanna's want" threads immediately if it is formed in a way that could end up causing a string of gimme's (i.e., without direct Web/FTP links/URLs or an e-mail address

Reply
  • 0 in reply to Jon Ward

    Here's my $0.02 USD.

    It seems most of the offenders fall into one or both of two categories -- the clueless and the I-wanna's/gimme's (CMS says apostrophizing in this context is acceptable).

    The clueless should be tolerated so that they may get one.

    The I-wanna's/gimme's should not be tolerated for very long. Those who have what wanna's want should be proactive and put their offerings up on a Web/FTP site and simply link to it, and not be reactive by having to "poll" the threads to see if anybody new needs something.

    So there you have it:

    • Let the "clueless" threads live unless they are truly incomprehensible
    • Kill the "I-wanna/gimme" threads after a short time
    • Kill the "I have what wanna's want" threads immediately if it is formed in a way that could end up causing a string of gimme's (i.e., without direct Web/FTP links/URLs or an e-mail address

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