Renesas rl78 User Manual
RL78/G1A
CHAPTER 13 SERIAL INTERFACE IICA
(f) When arbitration loss occurs due to low-level data when attempting to generate a restart condition
(i) When WTIM0 = 0
ST
AD6 to AD0
R/W ACK
D7 to D0
D7 to D0
ACK
SP
ACK
D7 to D0
ACK
STT0 = 1
↓
3
4
5
2
1
1: IICS0 = 1000×110B
2: IICS0 = 1000×000B (Sets the WTIM0 bit to 1)
3: IICS0 = 1000×100B (Clears the WTIM0 bit to 0)
4: IICS0 = 01000000B
5: IICS0 = 00000001B
Remark
: Always
generated
: Generated only when SPIE0 = 1
×:
Don’t
care
(ii) When WTIM0 = 1
ST
AD6 to AD0
R/W ACK
D7 to D0
D7 to D0
ACK
SP
ACK
D7 to D0
ACK
STT0 = 1
↓
3
4
2
1
1: IICS0 = 1000×110B
2: IICS0 = 1000×100B (Sets the STT0 bit to 1)
3: IICS0 = 01000100B
4: IICS0 = 00000001B
Remark
: Always
generated
: Generated only when SPIE0 = 1
×:
Don’t
care
R01UH0305EJ0200 Rev.2.00
634
Jul 04, 2013