18. IIC MODE ........................................................................................................................128
18.1 IIC MODE GENERAL ...................................................................................................................................................128
18.2 IIC RELATED REGISTER ..............................................................................................................................................129
18.3 MASTER CONTROL MODE ...........................................................................................................................................132
18.3.1 I2C Master Control Mode Support .......................................................................................................................132
18.3.1.1 I2C Master Control Mode Operation........................................................................................................133
18.3.2 Baud Rate Generator ..........................................................................................................................................134
18.3.3 I2C Master Control Mode Transmit ......................................................................................................................135
18.3.3.1 BF Status Indication................................................................................................................................135
18.3.3.2 WCOL Status Indication .........................................................................................................................135
18.3.3.3 ACKSTAT Status Indication ....................................................................................................................135
18.3.4 I2C Master Control Mode Receive.......................................................................................................................136
18.3.4.1 BF Status Indication................................................................................................................................136
18.3.4.2 WCOL Status Indication .........................................................................................................................136
18.3.5 I2C Master Control Mode Start Condition Time Series ........................................................................................138
18.3.5.1 WCOL Status Indication .........................................................................................................................138
18.3.6 I2C Master Control Mode Repeat Condition Time Series ....................................................................................139
18.3.6.1 WCOL Status Indication .........................................................................................................................139
18.3.7 ACK Time Series.................................................................................................................................................140
18.3.7.1 WCOL Status Indication .........................................................................................................................140
18.3.8 Stop Condition.....................................................................................................................................................141
18.3.8.1 WCOL Status Indication .........................................................................................................................141
18.3.9 Clock Arbitration..................................................................................................................................................142
18.3.10 Multi Master Mode...............................................................................................................................................142
18.3.11 Multi Master Communication, Bus Conflict and Bus Arbitration ..........................................................................143
18.4 SLAVE MODE .............................................................................................................................................................143
18.4.1 Addressing ..........................................................................................................................................................144
18.4.2 Receiving ............................................................................................................................................................144
18.4.3 Transmit ..............................................................................................................................................................145
18.4.4 I2C Masking Register..........................................................................................................................................146
18.5 OPERATION UNDER SLEEP MODE ................................................................................................................................146
18.6 EFFECT OF RESET......................................................................................................................................................146
19. TOUCH BUTTON ............................................................................................................147
19.1 TOUCH BUTTON MOD GENERAL...................................................................................................................................147
19.2 TOUCH BUTTON RELATED REGISTER............................................................................................................................148
19.3 APPLICATION FOR TOUCH BUTTON MOD .......................................................................................................................151
19.3.1 The process of reading “data of touch button” in query mode.............................................................................151
19.3.2 Judge method of key press .................................................................................................................................152
19.4 PRECAUTIONS FOR TOUCH BUTTON MOD .....................................................................................................................153
20. LOW VOLTAGE DETECTION (LVD)...............................................................................154
20.1 LVD MOD GENERAL ...................................................................................................................................................154
20.2 LVD RELATED REGISTER ............................................................................................................................................154
20.3 LVD OPERATION ........................................................................................................................................................154
21. ELECTRICAL PARAMETER...........................................................................................155
21.1 LIMIT PARAMETER ......................................................................................................................................................155
21.2 DC FEATURE .............................................................................................................................................................155
21.3 ADC FEATURE...........................................................................................................................................................156
21.4 COMP FEATURE .......................................................................................................................................................156
21.5 PGA FEATURE...........................................................................................................................................................157