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After reset: 00H
R/W
<7>
<6>
IICCn
IICEn
LRELn
(n = 0, 1)
IICEn
0
Operation stopped. IIC status register n (IICSn) preset. Internal operation stopped.
1
Enables operation.
Condition for clearing (IICEn = 0)
• Cleared by instruction
• When RESET is input
LRELn
0
Normal operation
1
This exits from the current communications operation and sets standby mode. This setting is automatically
cleared after being executed. Its uses include cases in which a locally irrelevant extension code has been
received.
The SCLn and SDAn lines are set to high impedance.
The following flags are cleared.
• STDn • ACKDn • TRCn • COIn • EXCn • MSTSn • STTn • SPTn
The standby mode following exit from communications remains in effect until the following communications entry conditions
are met.
• After a stop condition is detected, restart is in master mode.
• An address match or extension code reception occurs after the start condition.
Condition for clearing (LRELn = 0)
• Automatically cleared after execution
• When RESET is input
Note This flag's signal is invalid when IICEn = 0.
Remark
STDn:
Bit 1 of IIC state register n (IICSn)
ACKDn:
Bit 2 of IIC state register n (IICSn)
TRCn:
Bit 3 of IIC state register n (IICSn)
COIn:
Bit 4 of IIC state register n (IICSn)
EXCn:
Bit 5 of IIC state register n (IICSn)
MSTSn:
Bit 7 of IIC state register n (IICSn)
CHAPTER 10
SERIAL INTERFACE FUNCTION
Address: FFFFF340H, FFFFF350H
<5>
<4>
<3>
WRELn
SPIEn
WTIMn
2
I
Cn operation enable/disable specification
Exit from communications
Note
Condition for setting (LRELn = 1)
• Set by instruction
User's Manual U13850EJ6V0UD
<2>
<1>
ACKEn
STTn
Condition for setting (IICEn = 1)
• Set by instruction
(1/4)
<0>
SPTn
281
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