RL78/G1P
CHAPTER 12 SERIAL INTERFACE IICA
R01UH0895EJ0100 Rev.1.00
531
Nov 29, 2019
(f) When arbitration loss occurs due to low-level data when attempting to generate a restart condition
(i) When WTIMn = 0
1: IICSn = 1000×110B
2: IICSn = 1000×000B (Sets the WTIMn bit to 1)
3: IICSn = 1000×100B (Clears the WTIMn bit to 0)
4: IICSn = 01000000B
5: IICSn = 00000001B
Remark
: Always
generated
: Generated only when SPIEn = 1
×:
Don’t
care
(ii) When WTIMn = 1
1: IICSn = 1000×110B
2: IICSn = 1000×100B (Sets the STTn bit to 1)
3: IICSn = 01000100B
4: IICSn = 00000001B
Remark
: Always
generated
: Generated only when SPIEn = 1
×:
Don’t
care
Remark
n = 0, 1
ST
AD6 to AD0
R/W ACK
D7 to D0
D7 to D0
ACK
SP
ACK
D7 to D0
ACK
STTn = 1
3
4
2
1
ST
AD6 to AD0
R/W ACK
D7 to D0
D7 to D0
ACK
SP
ACK
D7 to D0
ACK
STTn = 1
3
4
5
2
1