PIC16F1503T-I View Datasheet(PDF) - Microchip Technology

Part Name

Description

Manufacturer

PIC16F1503T-I

14-Pin Flash, 8-Bit Microcontrollers

Microchip Technology 

PIC16(L)F1503

FIGURE 21-34:

BUS COLLISION DURING START CONDITION (SCLX = 0)

SDAx = 0, SCLx = 1

SDAx

TBRG

TBRG

SCLx

Set SEN, enable Start

sequence if SDAx = 1, SCLx = 1

SEN

BCLxIF

SCLx = 0 before BRG time-out,

bus collision occurs. Set BCLxIF.

S

‘0’

SSPxIF ‘0’

SCLx = 0 before SDAx = 0,

bus collision occurs. Set BCLxIF.

Interrupt cleared

by software

‘0’

‘0’

FIGURE 21-35: BRG RESET DUE TO SDA ARBITRATION DURING START CONDITION

SDAx

SDAx = 0, SCLx = 1

Set S

Less than TBRG

TBRG

SDAx pulled low by other master.

Reset BRG and assert SDAx.

Set SSPxIF

SCLx

SEN

BCLxIF

S

SCLx pulled low after BRG

time-out

Set SEN, enable Start

sequence if SDAx = 1, SCLx = 1

‘0’

S

SSPxIF

SDAx = 0, SCLx = 1,

set SSPxIF

Interrupts cleared

by software

DS40001607D-page 198

 2011-2015 Microchip Technology Inc.

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