PIC16LF18854 Datasheet, PDF (500/668 Pages) Microchip Technology – C Compiler Optimized RISC Architecture

PIC16(L)F18856/76
FIGURE 31-34:
BUS COLLISION DURING START CONDITION (SCL = 0)
SDA = 0, SCL = 1
SDA
TBRG
TBRG
SCL
Set SEN, enable Start
sequence if SDA = 1, SCL = 1
SEN
BCL1IF
SCL = 0 before BRG time-out,
bus collision occurs. Set BCL1IF.
S
’0’
SSPxIF ^{’0’}
SCL = 0 before SDA = 0,
bus collision occurs. Set BCL1IF.
Interrupt cleared
by software
’0’
’0’
FIGURE 31-35: BRG RESET DUE TO SDA ARBITRATION DURING START CONDITION
SDA
SDA = 0, SCL = 1
Set S
Less than TBRG
TBRG
SDA pulled low by other master.
Reset BRG and assert SDA.
Set SSPxIF
SCL
SEN
BCL1IF
S
SCL pulled low after BRG
time-out
Set SEN, enable Start
sequence if SDA = 1, SCL = 1
’0’
S
SSPxIF
SDA = 0, SCL = 1,
set SSPxIF
Interrupts cleared
by software
DS40001824A-page 500
Preliminary
 2016 Microchip Technology Inc.