Renesas RL78 Series User Manual page 598

RL78/G1D
(3) Slave device operation (when receiving extension code)
The device is always participating in communication when it receives an extension code.
(a) Start ~ Code ~ Data ~ Data ~ Stop
(i) When WTIMn = 0
ST AD6 to AD0 R/W ACK
1: IICSn = 0010×010B
2: IICSn = 0010×000B
3: IICSn = 0010×000B
4: 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 = 0010×010B
2: IICSn = 0010×110B
3: IICSn = 0010×100B
4: IICSn = 0010××00B
5: IICSn = 00000001B
Remark : Always generated
: Generated only when SPIEn = 1
×: Don't care
Remark n = 0
R01UH0515EJ0120 Rev.1.20
Dec 16, 2016
D7 to D0
1
D7 to D0
1 2
CHAPTER 14 SERIAL INTERFACE IICA
ACK D7 to D0
2
ACK D7 to D0
3
ACK SP
3 4
ACK SP
4 5
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