CHAPTER 15 SERIAL INTERFACE IICA
Page 479 of 920
(1) Master device operation
(a)
Start ~ Address ~ Data ~ Data ~ Stop (transmission/reception)
(i) When WTIMn = 0
(ii) When WTIMn = 1
Remark
n = 0, 1
ST
AD6 to AD0
D7 to D0
R/W ACK
ACK
SP
D7 to D0
ACK
SPTn = 1
↓
5
1
2
3
4
▲
1: IICSn = 1000×110B
▲
2: IICSn = 1000×000B
▲
3: IICSn = 1000×000B (Sets the WTIMn bit to 1)
▲
4: IICSn = 1000××00B (Sets the SPTn bit to 1)
5: IICSn = 00000001B
Note
To generate a stop condition, set the WTIMn bit to 1 and change the timing for generating the INTIICAn interrupt
request signal.
Remark
▲
: Always generated
: Generated only when SPIEn = 1
× : Don’t care
ST
AD6 to AD0
D7 to D0
R/W ACK
ACK
SP
D7 to D0
ACK
SPTn = 1
↓
4
3
2
1
▲
1: IICSn = 1000×110B
▲
2: IICSn = 1000×100B
▲
3: IICSn = 1000××00B (Sets the SPTn bit to 1)
4: IICSn = 00000001B
Remark
▲
: Always generated
: Generated only when SPIEn = 1
× : Don’t care
Summary of Contents for RL78/G1H
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