Rs232 connection............................

[NARENDRA1234]

I connecting RS232 to PIC 4520.i am using max232 and DB9 connector..i have made connections of pin 2,3 and 5 as TX,Rx and GND.then where the other pins of DB9 to be connected?like do i need to short pin 4 and 6 to GND?:-(

 

[IanP]

No handshaking is required, so 3-wire (2,3 and 5) connection is all what need ..

IanP
:wink:

 

[alexan_e]

You only need these three connections for max232 to work,
all the other pins don't need to be connected.

>>> Simple Case AVR/PC Serial Communication via MAX232 « SWHarden.com

Alex