UPD78F1502AGK-GAK-AX Datasheet, PDF (573/1031 Pages) Renesas Technology Corp – 16-Bit Single-Chip Microcontrollers

78K0R/Lx3
CHAPTER 14 SERIAL ARRAY UNIT
Figure 14-91. Flowchart of Address Field Transmission
Starting IIC communication
SMRmn, SCRmn: Setting communication
SPSm, SDRmn[15:9]: Setting transfer rate
Writing 0 to SOmn bit
Writing 0 to CKOmn bit
Perform initial setting
when SEmn = 0.
Writing 1 to SOEmn bit
Writing 1 to SSmn bit
Writing address and R/W
data to SIOr (SDRmn[7:0])
Transfer end interrupt
generated?
Yes
Parity error (ACK error) flag
PEFmn = 1 ?
No
Address field
transmission completed
No
Yes
ACK reception error
To data transmission flow
and data reception flow
R01UH0004EJ0501 Rev.5.01
557
Jun 20, 2011