HT85F2240 datasheet(5/147 Pages) HOLTEK

5 / 147 page

Rev. 1.10

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A/D Flash 8051 Core Low Pin Count MCU

HT85F2230/HT85F2240

26 Timer/Event Counters ...................................................................................... 103

Timer/Event Co�nter S�mmar�....................................................................................... 10�

27 Timer/Event Counters 0, 1 ............................................................................... 104

Introd�ction...................................................................................................................... 104

Timer 0/Timer 1Register Description............................................................................... 104

Mode 0 – 1�-bit Co�nter/Timer Mode Operation............................................................. 109

Mode 1 – 16-bit Co�nter/Timer Mode Operation............................................................. 110

Mode � – 8-bit A�to-re�oad Co�nter/Timer Mode Operation ............................................111

Mode � – Two 8-Bit Timers/Co�nters Mode Operation – Timer 0 On��........................... 11�

28 Timer 2 with Additional 2-channel PCA.......................................................... 113

Introd�ction...................................................................................................................... 11�

Timer � ............................................................................................................................ 114

Timer f�nction..............................................................................................................................114

Event Co�nter f�nction................................................................................................................114

Gated Timer f�nction ...................................................................................................................11�

Timer � with PCA............................................................................................................. 11�

Timer � Register Description........................................................................................... 116

Capt�re Modes................................................................................................................ 118

Capt�re On Edge Mode...............................................................................................................118

Capt�re On Write Mode...............................................................................................................118

Compare Modes.............................................................................................................. 119

Compare Mode 0.........................................................................................................................119

Compare Mode 1........................................................................................................................ 1�0

Re�oad Mode................................................................................................................... 1��

Programmab�e C�ock O�tp�t Mode................................................................................. 1��

29 Analog to Digital Converter – ADC ................................................................. 124

A/D Overview .................................................................................................................. 1�4

A/D Converter Register Description ................................................................................ 1��

A/D Converter Data Registers – ADRL� ADRH ............................................................... 1��

A/D Converter Contro� Registers – ADCR0� ADCR1� ADCR�� ADPGA .......................... 1��

A/D Operation.................................................................................................................. 1�9

A/D Converter C�ock So�rce ........................................................................................... 1�0

A/D Inp�t Pins ................................................................................................................. 1�0

Temperat�re Sensor........................................................................................................ 1�1

A/D Reference Vo�tage So�rce ....................................................................................... 1�1

S�mmar� of A/D Conversion Steps................................................................................. 1��

A/D Conversion Timing.................................................................................................... 1��

Programming Considerations.......................................................................................... 1��

A/D Transfer F�nction ..................................................................................................... 1�4

HT85F2240 Datasheet(PDF) 5 Page - Holtek Semiconductor Inc

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