Renesas RL78/G1P Hardware User Manual page 552

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