Panasonic MN101C77C - Manual (Page 419)

Chapter 12 Serial Interface 3
Operation XII - 33
Figure 12-3-17 Master Reception Timing
„ Master Reception Timing
SDA
SCL
Interrupt
1 2 . . . . 8 ACK 1 2 8
IICBSY
Set data to SC3TRB Clear IICBSY flag
(1) (2) (3) (4) (5) (6)
Set data to SC3TRB
ACK
8-bit
transmission
8-bit
reception
[Set dummy data]
(1) Output start condition.
(2) Bus released period, ACK bit is received.
(3) Interrupt transaction
- Setup for the reception mode : SC3REX = 0
→
1
- Disable start condition : SC3STE = 1
→
0
- Start communication : set data to SC3TRB.
(4) Output ACK bit.
(5) Bus released period, interrupt transaction
- Complete communication : clear IICBSY flag
(6) Generate stop condition.