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 15-28: MASTER TRANSMIT FLOWCHART

Idle Mode

Write SSPBUF

Num_Clocks = 0,

BF = 1

Force SCL = 0

Yes

Num_Clocks

= 8?

No

Load BRG with

SSPADD<6:0>,

start BRG count,

SDA = Current Data bit

BRG

No

rollover?

Yes

Stop BRG,

Force SCL = 1

(Clock Arbitration)

No

SCL = 1?

Yes

SDA = No

Data bit?

Yes

Load BRG with

SSPADD<6:0>,

count SCL high time

Bus collision detected

Set BCLIF, hold prescale off

Clear XMIT enable

BRG

No

No

rollover?

SCL = 0?

Yes

SDA =

No

Data bit?

Yes

Num_Clocks

= Num_Clocks + 1

Yes

Reset BRG

Release SDA so

slave can drive ACK

Load BRG with

SSPADD<6:0>,

start BRG count

BRG

No

rollover?

Yes

Force SCL = 1,

Stop BRG

(Clock Arbitration)

No

SCL = 1?

Yes

Load BRG with

SSPADD<6:0>,

count high time

No

Rollover?

Yes

Read SDA and place into

AKSTAT bit (SSPCON2<6>)

Force SCL = 0,

BF = 0,

Set SSPIF

DS30264A-page 150

Preliminary

© 1997 Microchip Technology Inc.

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