NEC V850/SB1 User Manual page 333

Figure 10-22. Example of Slave to Master Communication
(When 9-Clock Wait Is Selected for Both Master and Slave) (3/3)
Processing by master device
IICn IICn
ACKDn
STDn
SPDn
WTIMn
H
ACKEn
H
MSTSn
STTn
SPTn
WRELn
INTIICn
TRCn
Transfer lines
1
SCLn
SDAn D7
Processing by slave device
←
IICn
IICn
ACKDn
STDn
SPDn
WTIMn H
ACKEn H
MSTSn
L
STTn
L
SPTn
L
WRELn
INTIICn
TRCn
Note To cancel master wait, write FFH to IICn or set WRELn.
Remark n = 0, 1
CHAPTER 10 SERIAL INTERFACE FUNCTION
(c) Stop condition
←
FFH Note
Note
2 3 4 5 6 7
D6 D5 D4 D3 D2 D1
data
User's Manual U13850EJ6V0UD
(When SPIEn = 1)
8 9
D0
N−ACK
Stop
condition
(When SPIEn = 1)
←
IICn address
1 2
AD6 AD5
Start
condition
333