MOD-USB-RS232: Why RC1, RC3, RC4 & RC5 bused to SCL & SDA

Started by rmoshiri, December 23, 2012, 11:36:58 PM

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Why are MOD-USB-RS232 PIC processor's RC1 & RC3 bused to RB6/SCL?
Also, why are RC4 & RC5 bused to RB4/SDA?
If not bused, we could use RC1, RC3, RC4 and RC5 for other I/O purposes.