NEC V850ES/KE1+ User Manual page 503

(6) When arbitration loss occurs due to low-level data when attempting to generate a restart condition
<1> When WTIM0 bit = 0
ST AD6 to AD0
1: IICS0 register = 1000X110B
2: IICS0 register = 1000X000B (WTIM0 bit = 1)
3: IICS0 register = 1000X100B (WTIM0 bit = 0)
4: IICS0 register = 01000000B
Δ 5: IICS0 register = 00000001B
Remark : Always generated
Δ: Generated only when SPIE0 bit = 1
X: don't care
<2> When WTIM0 bit = 1
ST AD6 to AD0
1: IICS0 register = 1000X110B
2: IICS0 register = 1000X100B
3: IICS0 register = 01000100B
Δ 4: IICS0 register = 00000001B
Remark : Always generated
Δ: Generated only when SPIE0 bit = 1
X: don't care
CHAPTER 16 I
IICC0.STT0 bit = 1
R/W ACK D7 to D0 ACK
1 2
IICC0.STT0 bit = 1
R/W ACK D7 to D0 ACK
1
User's Manual U16896EJ2V0UD
2
C BUS
↓
D7 to D0 ACK D7 to D0
3 4
↓
D7 to D0 ACK D7 to D0
2 3
ACK SP
Δ5
ACK SP
Δ4
503