PIC16F747 Microchip Technology Inc., PIC16F747 Datasheet - Page 131

• Manufacturer Part Number: PIC16F747
• Description: 28/40/44-pin, 8-bit Cmos Flash Microcontrollers With 10-bit A/d And Nanowatt Technology
• Manufacturer: Microchip Technology Inc.

FIGURE 10-27:
FIGURE 10-28:
 2004 Microchip Technology Inc.
SDA
SCL
SEN
BCLIF
S
SSPIF
S
BCLIF
SSPIF
SDA
SCL
SEN
BUS COLLISION DURING START CONDITION (SCL = 0)
BRG RESET DUE TO SDA ARBITRATION DURING START CONDITION
‘0’
‘0’
SDA pulled low by other master.
Reset BRG and assert SDA.
SCL = 0 before BRG time-out,
bus collision occurs. Set BCLIF.
Set SEN, enable Start
sequence if SDA = 1, SCL = 1
Less than T
BRG
SDA = 0, SCL = 1
SDA = 0, SCL = 1
SDA = 0, SCL = 1,
set SSPIF
T
Set SEN, enable Start
sequence if SDA = 1, SCL = 1
BRG
S
Set S
T
BRG
T
BRG
Set SSPIF
SCL = 0 before SDA = 0,
bus collision occurs. Set BCLIF.
SCL pulled low after BRG
time-out
Interrupt cleared
in software
Interrupts cleared
in software
‘0’
‘0’
PIC16F7X7
‘0’
DS30498C-page 129