Chapter 12 Serial Interface 3

„Master Transmission Timing

(1)

 

8-bit

 

 

(2)

(3)

8-bit

 

 

 

 

 

transmission

 

 

 

transmission

 

SDA

1

2

. .

8

ACK

 

1

2

. .

8

SCL

Interrupt

IICBSY

Set data to SC3TRB

Set data to SC3TRB

(1)Output start condition.

(2)Bus released period, ACK bit is received.

(3)Interrupt transaction.

-Disable start condition : SC3STE = 1 0

-Start communication : set data to SC3TRB

(4)Receive ACK bit.

(5)Interrupt transaction.

-Finish communication : clear the IICBSY flag.

(6)Generates stop condition.

Figure 12-3-16 Master Transmission Timing

(4) (5) (6)

ACK

Clear IICBSY flag

XII - 32 Operation

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Image 418
Panasonic MN101C77C, F77G user manual „Master Transmission Timing