Contents
SPI Communication..............................................................................................86
I2C Interface .........................................................................................................88
I2C Bus Communication........................................................................................92
I2C Bus Start Signal..............................................................................................92
Slave Address ......................................................................................................93
I2C Bus Read/Write Signal....................................................................................93
I2C Bus Slave Address Acknowledge Signal.........................................................93
I2C Bus Data and Acknowledge Signal.................................................................93
Peripheral Clock Output ...................................................................95
Peripheral Clock Operation...................................................................................95
SCOM Function for LCD ...................................................................96
LCD Operation .....................................................................................................96
LCD Bias Control..................................................................................................97
LDO Function .......................................................................................................98
Operational Amplifiers......................................................................99
Operational Amplifier Registers ............................................................................99
Operational Amplifier Operation..........................................................................102
Operational Amplifier Functions..........................................................................103
Comparators....................................................................................107
Comparator Operation........................................................................................107
Comparator Registers ........................................................................................107
Comparator Functions ........................................................................................110
Interrupts..........................................................................................114
Interrupt Registers ..............................................................................................114
Interrupt Operation..............................................................................................114
Interrupt Priority ..................................................................................................115
External Interrupt ................................................................................................117
External Peripheral Interrupt ...............................................................................119
Timer/Event Counter Interrupt.............................................................................119
SPI/I2C Interface Interrupt...................................................................................120
Multi-function Interrupt........................................................................................120
A/D Interrupt.......................................................................................................120
Time Base Interrupt ............................................................................................121
External Peripheral Interrupt...............................................................................122
Comparator Interrupt ..........................................................................................122
EEPROM Interrupt .............................................................................................122
LVD Interrupt ......................................................................................................122
Interrupt Wake-up Function ................................................................................123
Programming Considerations .............................................................................123
Buzzer...............................................................................................123
Power Down Mode and Wake-up ...................................................126
Entering the IDLE or SLEEP Mode.....................................................................126
Rev. 1.20
5
September 15, 2011
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