PIC16F1827T-E/ML View Datasheet(PDF) - Microchip Technology

Part Name

Description

Manufacturer

PIC16F1827T-E/ML

18/20/28-Pin Flash Microcontrollers with nanoWatt XLP Technology

Microchip Technology 

PIC16F/LF1826/27

FIGURE 24-34:

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 24-35: BRG RESET DUE TO SDA ARBITRATION DURING START CONDITION

SDAx = 0, SCLx = 1

Set S

Less than TBRG

TBRG

SDAx 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

DS41391C-page 276

Preliminary

 2010 Microchip Technology Inc.

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