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PIC16LC774-04/SP 数据表(PDF) 92 Page - Microchip Technology

部件名 PIC16LC774-04/SP
功能描述  28/40-Pin, 8-Bit CMOS Microcontrollers w/ 12-Bit A/D
PDF  200 Pages
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制造商  MICROCHIP [Microchip Technology]
网页  http://www.microchip.com
标志 MICROCHIP - Microchip Technology

PIC16LC774-04/SP 数据表(HTML) 92 Page - Microchip Technology

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PIC16C77X
DS30275A-page 92
Advance Information
© 1999 Microchip Technology Inc.
FIGURE 8-36: BUS COLLISION DURING START CONDITION (SCL = 0)
FIGURE 8-37: BRG RESET DUE TO SDA COLLISION DURING START CONDITION
SDA
SCL
SEN
Bus collision occurs, Set BCLIF.
SCL = 0 before SDA = 0,
Set SEN, enable start
sequence if SDA = 1, SCL = 1
T
BRG
T
BRG
SDA = 0, SCL = 1
BCLIF
S
SSPIF
Interrupts cleared
in software.
Bus collision occurs, Set BCLIF.
SCL = 0 before BRG time out,
’0’
’0’
’0’
’0’
SDA
SCL
SEN
Set S
Set SEN, enable start
sequence if SDA = 1, SCL = 1
Less than T
BRG
T
BRG
SDA = 0, SCL = 1
BCLIF
S
SSPIF
S
Interrupts cleared
in software.
Set SSPIF
SDA = 0, SCL = 1
SDA pulled low by other master.
Reset BRG and assert SDA
SCL pulled low after BRG
Timeout
Set SSPIF
’0’



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