NEC 78K0 Series User Manual page 452

(c) Start ~ Code ~ Data ~ Data ~ Stop (extension code transmission)
(i) When WTIM0 = 0
ST AD6 to AD0 R/W ACK
1: IICS0 = 1010×110B
2: IICS0 = 1010×000B
3: IICS0 = 1010×000B (Sets WTIM0 to 1)
4: IICS0 = 1010××00B (Sets SPT0 to 1)
5: IICS0 = 00000001B
Note To generate a stop condition, set WTIM0 to 1 and change the timing for generating the INTIIC0 interrupt
request signal.
Remark : Always generated
: Generated only when SPIE0 = 1
×: Don't care
(ii) When WTIM0 = 1
ST AD6 to AD0 R/W ACK
1: IICS0 = 1010×110B
2: IICS0 = 1010×100B
3: IICS0 = 1010××00B (Sets SPT0 to 1)
4: IICS0 = 00001001B
Remark : Always generated
: Generated only when SPIE0 = 1
×: Don't care
452
CHAPTER 17 SERIAL INTERFACE IIC0
D7 to D0 ACK
1 2
Note
D7 to D0 ACK
1 2
Preliminary User's Manual U17260EJ3V1UD
SPT0 = 1
↓
D7 to D0 ACK SP
3 4 5
SPT0 = 1
↓
D7 to D0 ACK SP
3 4