PIC17LC752-08/JWQTP View Datasheet(PDF) - Microchip Technology

Part Name

Description

Manufacturer

PIC17LC752-08/JWQTP

High-Performance 8-Bit CMOS EPROM Microcontrollers

Microchip Technology 

PIC17C75X

FIGURE 15-39: 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

SSPIF

SCL = 0 before SDA = 0,

Bus collision occurs, Set BCLIF.

Interrupts cleared

in software.

FIGURE 15-40: BRG RESET DUE TO SDA COLLISION DURING START CONDITION

SDA

SDA = 0, SCL = 1

Set S, SSPIF

Less than TBRG

TBRG

SDA goes low early.

Reset BRG and assert SDA

SCL

Set SEN, enable start

sequence if SDA = 1, SCL = 1

S

SEN

BCLIF

S

SSPIF

SDA = 0, SCL = 1

Set S, SSPIF

Interrupts cleared

in software.

DS30264A-page 162

Preliminary

© 1997 Microchip Technology Inc.

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