Datasheet

 2010-2012 Microchip Technology Inc. DS41419D-page 285
PIC16(L)F1824/1828
FIGURE 25-32: BUS COLLISION TIMING FOR TRANSMIT AND ACKNOWLEDGE
SDA
SCL
BCL1IF
SDA released
SDA line pulled low
by another source
Sample SDA. While SCL is high,
data doesn’t match what is driven
Bus collision has occurred.
Set bus collision
interrupt (BCL1IF)
by the master.
by master
Data changes
while SCL = 0