CHAPTER 10 SERIAL INTERFACE FUNCTION
User’s Manual U13850EJ6V0UD
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Condition for clearing (STCENn = 0)
• Detection of start condition
• RESET input
Condition for setting (STCENn = 1)
• Setting by instruction
STCENn
0
1
After operation is enabled (IICEn = 1), cannot generate a start condition until a stop condition is detected.
After operation is enabled (IICEn = 1), can generates a start condition without detecting a stop condition.
Initial start enable trigger
Condition for clearing (IICRSVn = 0)
• Clearing by instruction
• RESET input
Condition for setting (IICRSVn = 1)
• Setting by instruction
IICRSVn
0
1
Enable communication reservation
Disable communication reservation
Communication reservation function disable bit
Cautions 1. Write to the STCENn bit only when the operation is stopped (IICEn = 0).
2. As the bus release status (IICBSYn = 0) is recognized immediately after I
2
C
operation is enabled regardless of the actual bus status when STCENn = 1,
when generating the first start condition (STTn = 1), it is necessary to verify
that the bus has been released in order to prevent such communications from
being destroyed.
3. Write to the IICRSVn bit only when the operation is stopped (IICEn = 0).
Remark
STTn: Bit 1 of IIC control register n (IICCn)
IICEn: Bit 7 of IIC control register n (IICCn)
Содержание V850/SB1
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