PIC16LF876AT-I/ML View Datasheet(PDF) - Microchip Technology

Part Name

Description

Manufacturer

PIC16LF876AT-I/ML

28/40/44-Pin Enhanced Flash Microcontrollers

Microchip Technology 

PIC16F87X

FIGURE 9-21:

BUS COLLISION DURING START CONDITION (SCL = 0)

SDA

SDA = 0, SCL = 1

TBRG

TBRG

SCL

Set SEN, enable START

sequence if SDA = 1, SCL = 1

SEN

BCLIF

SCL = 0 before BRG time-out,

Bus collision occurs, Set BCLIF

S

’0’

SSPIF ’0’

SCL = 0 before SDA = 0,

Bus collision occurs, Set BCLIF

Interrupts cleared

in software

’0’

’0’

FIGURE 9-22:

BRG RESET DUE TO SDA COLLISION DURING START CONDITION

SDA

SDA = 0, SCL = 1

Set S

Less than TBRG

TBRG

SDA pulled low by other master.

Reset BRG and assert SDA.

Set SSPIF

SCL

SEN

BCLIF ’0’

s

SCL pulled low after BRG

Time-out

Set SEN, enable START

sequence if SDA = 1, SCL = 1

S

SSPIF

SDA = 0, SCL = 1

Set SSPIF

Interrupts cleared

in software

 2001 Microchip Technology Inc.

DS30292C-page 91

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