vinodstanur
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(my RS232 voltage levels are +10.2v and -10.2v)
I want to connect my PC serial port (only TxD) to PIC16f877a. But now, i don't have a MAX232 for level conversion. So can i use the below circuit?
Now i read somewhere that RS232 have +ve as logic 1 and -ve as logic 1.
Then, should i invert the signal just before connecting to pic?
:roll:
I want to connect my PC serial port (only TxD) to PIC16f877a. But now, i don't have a MAX232 for level conversion. So can i use the below circuit?
Now i read somewhere that RS232 have +ve as logic 1 and -ve as logic 1.
Then, should i invert the signal just before connecting to pic?
:roll:
