hello,
i'm new to electronics and i have some problems making my project work. i can't make the serial communication work. the communication is between a PC and a AT89S52. i use a MAX232 to convert the RS232 signals to TTL and vice-versa. i read some datasheets, in some the caps of the MAX232 are 0.1, 1 or even 10 microF. what is the corect value?
and another question ... regarding the serial connector on the PCB, i saw some schemes where RTS and CTS are connected, and DTR, DSR and CD are connected as well. do i need to wire them in my case also.
thanks a lot.
i'm new to electronics and i have some problems making my project work. i can't make the serial communication work. the communication is between a PC and a AT89S52. i use a MAX232 to convert the RS232 signals to TTL and vice-versa. i read some datasheets, in some the caps of the MAX232 are 0.1, 1 or even 10 microF. what is the corect value?
and another question ... regarding the serial connector on the PCB, i saw some schemes where RTS and CTS are connected, and DTR, DSR and CD are connected as well. do i need to wire them in my case also.
thanks a lot.