Depends: the MAX232 converts the UART I/O to RS-232 levels (inverted +-12V).
If you are communicating with an RS-232 device you probably need it. You
could equally communicate via RS-485, RS-422, MIDI, or whatever uses a
serial protocol using the same USART but you will need different hardware to
transform the signals to/from TTL levels.
/\/\/\/*=Martin

----- Original Message -----
From: "Kevin A. Benedict" <kben@dca.net>
To: <PICLIST@MITVMA.MIT.EDU>
Sent: Monday, December 03, 2001 3:49 PM
Subject: [PIC]: No MAX232 needed with PIC16F628 ?


> Hi,
>  am I right to assume the PIC16F628 does not need a MAX232 chip, since
> it is a hardware usart (RB1(RX)/RB2(TX) ?  I checked the data sheet and
searched
> the archives, but no luck.
>
> Thanks in advance,
>                   Kevin
>
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