HT45F23 datasheet(5/152 Pages) HOLTEK

5 / 152 page

SPI Communication..............................................................................................86

2C Interface .........................................................................................................88

2C Bus Communication........................................................................................92

2C Bus Start Signal..............................................................................................92

Slave Address ......................................................................................................93

2C Bus Read/Write Signal....................................................................................93

2C Bus Slave Address Acknowledge Signal.........................................................93

2C 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/I

2C 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

Contents

Rev. 1.20

September 15, 2011

HT45F23 Datasheet(PDF) 5 Page - Holtek Semiconductor Inc

HT45F23 Datasheet(HTML) 5 Page - Holtek Semiconductor Inc

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