PIC18LF45J10T-E/SP View Datasheet(PDF) - Microchip Technology

Part Name

Description

Manufacturer

PIC18LF45J10T-E/SP

28/40/44-Pin High-Performance RISC Microcontrollers with nanoWatt Technology

Microchip Technology 

PIC18F45J10 FAMILY

FIGURE 15-27:

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

in software

‘0’

‘0’

FIGURE 15-28: BRG RESET DUE TO SDAx 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

in software

DS39682C-page 182

Preliminary

© 2007 Microchip Technology Inc.

Share Link: