PIC12F1840 MICROCHIP [Microchip Technology], PIC12F1840 Datasheet - Page 255

• Manufacturer Part Number: PIC12F1840
• Description: 8-Pin Flash Microcontrollers with nanoWatt XLP Technology
• Manufacturer: MICROCHIP [Microchip Technology]

FIGURE 25-34:
FIGURE 25-35:
 2011 Microchip Technology Inc.
SDA
SCL
SEN
S
BCL1IF
SSP1IF
S
BCL1IF
SSP1IF
SDA
SCL
SEN
BUS COLLISION DURING START CONDITION (SCL = 0)
BRG RESET DUE TO SDA ARBITRATION DURING START CONDITION
SDA pulled low by other master.
Reset BRG and assert SDA.
’0’
’0’
SCL = 0 before BRG time-out,
bus collision occurs. Set BCL1IF.
Set SEN, enable Start
sequence if SDA = 1, SCL = 1
Less than T
BRG
SDA = 0, SCL = 1
SDA = 0, SCL = 1
Preliminary
SDA = 0, SCL = 1,
set SSP1IF
T
Set SEN, enable Start
sequence if SDA = 1, SCL = 1
BRG
S
Set S
T
BRG
T
BRG
Set SSP1IF
SCL = 0 before SDA = 0,
bus collision occurs. Set BCL1IF.
SCL pulled low after BRG
time-out
PIC12F/LF1840
Interrupt cleared
by software
Interrupts cleared
by software
’0’
’0’
’0’
DS41441A-page 255