PIC16LF1824T39A_12 Datasheet, PDF (273/418 Pages) Microchip Technology – 20-Pin Flash Microcontrollers with XLP Technology

PIC16LF1824T39A
FIGURE 25-34:
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’
SSP1IF ^{‘0’}
SCL = 0 before SDA = 0,
bus collision occurs. Set BCL1IF.
Interrupt cleared
by software
‘0’
‘0’
FIGURE 25-35: 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 SSP1IF
SCL
SEN
BCL1IF
S
SCL pulled low after BRG
time-out
Set SEN, enable Start
sequence if SDA = 1, SCL = 1
‘0’
S
SSP1IF
SDA = 0, SCL = 1,
set SSP1IF
Interrupts cleared
by software
 2012 Microchip Technology Inc.
Preliminary
DS41657A-page 273