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Renesas rl78 User Manual

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RL78/G1A 
 
CHAPTER  13   SERIAL  INTERFACE  IICA 
(4)   Operation without communication 
 
(a)   Start ~ Code ~ Data ~ Data ~ Stop 
 
 
ST
AD6 to AD0
R/W ACK
D7 to D0
D7 to D0
ACK
ACK
SP
  1
 
 
1: IICS0 = 00000001B 
 
Remark  
:  Generated only when SPIE0 = 1 
 
 
(5)   Arbitration loss operation (operation as slave after arbitration loss) 
When the device is used as a master in a multi-master system, read the MSTS0 bit each time interrupt request 
signal INTIICA0 has occurred to check the arbitration result. 
 
(a)   When arbitration loss occurs during transmission of slave address data 
 
(i)   When WTIM0 = 0 
 
 
ST
AD6 to AD0
R/W ACK
D7 to D0
D7 to D0
ACK
ACK
SP
  3
  4
  2
  1
 
 
1: IICS0 = 0101×110B 
2: IICS0 = 0001×000B 
3: IICS0 = 0001×000B 
4: IICS0 = 00000001B 
 
Remark 
: Always 
generated 
 
:  Generated only when SPIE0 = 1 
 ×: 
 
Don’t 
care 
 
 
R01UH0305EJ0200  Rev.2.00 
 
 
628  
Jul 04, 2013