PIC18LF8720 Microchip Technology, PIC18LF8720 Datasheet - Page 195
PIC18LF8720
Manufacturer Part Number
PIC18LF8720
Description
(PIC18LF6620/6520/8520/6620/8620/6720/8720) 64/80-Pin High-Performance / 64-Kbyte Enhanced Flash Microcontrollers
Manufacturer
Microchip Technology
Datasheet
1.PIC18LF8720.pdf
(380 pages)
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FIGURE 17-27:
FIGURE 17-28:
2004 Microchip Technology Inc.
SDA
SCL
SEN
BCLIF
S
SSPIF
S
BCLIF
SSPIF
SDA
SCL
SEN
PIC18F6520/8520/6620/8620/6720/8720
BUS COLLISION DURING START CONDITION (SCL = 0)
BRG RESET DUE TO SDA ARBITRATION DURING START CONDITION
‘0’
SDA pulled low by other master.
Reset BRG and assert SDA.
‘0’
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’
‘0’
DS39609B-page 193
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