HT46R017 datasheet(3/91 Pages) HOLTEK

3 / 91 page

Rev. 1.00

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Rev. 1.00

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HT46R016/HT46R017

Enhanced A/D 8-Bit OTP MCU

Oscillator ........................................................................................................ 25

S�stem Osci��ator Overview .................................................................................................. �5

System Clock Configurations................................................................................................ �5

Externa� Cr�sta�/Resonator Osci��ator – HXT........................................................................ �5

Interna� RC Osci��ator – HIRC ............................................................................................... ��

Interna� Low Speed Osci��ator – LIRC................................................................................... ��

Power Down Mode and Wake-up.................................................................. 27

Entering the Power Down Mode ........................................................................................... �7

Standb� C�rrent Considerations........................................................................................... �7

Wake-�p................................................................................................................................ �8

Watchdog Timer............................................................................................. 29

Watchdog Timer C�ock So�rce.............................................................................................. �9

Watchdog Timer Contro� Register ......................................................................................... �9

Watchdog Timer Operation ................................................................................................... 30

Reset and Initialisation.................................................................................. 32

Reset F�nctions .................................................................................................................... 3�

Reset Initia� Conditions ......................................................................................................... 35

Input/Output Ports......................................................................................... 37

P��-high Resistors ................................................................................................................ 37

Port A Wake-�p ..................................................................................................................... 37

I/O Port Contro� Registers..................................................................................................... 38

Pin-shared F�nctions ............................................................................................................ 38

I/O Pin Str�ct�res.................................................................................................................. 39

Programming Considerations................................................................................................ 40

Timer/Event Counter ..................................................................................... 41

Configuring the Timer/Event Counter Input Clock Source .................................................... 41

Timer Registers – TMR0� TMR1 ........................................................................................... 4�

Timer Contro� Registers – TMR0C� TMR1C.......................................................................... 4�

Timer Mode ........................................................................................................................... 44

Event Co�nter Mode ............................................................................................................. 44

P��se Width Capt�re Mode ................................................................................................... 45

Presca�er............................................................................................................................... 4�

PFD F�nction ........................................................................................................................ 4�

I/O Interfacing........................................................................................................................ 48

Programming Considerations................................................................................................ 48

Timer Program Examp�e ....................................................................................................... 49

Time Base....................................................................................................... 50

Pulse Width Modulator.................................................................................. 50

PWM Operation..................................................................................................................... 50

�+� PWM Mode .................................................................................................................... 51

7+1 PWM Mode .................................................................................................................... 5�

PWM O�tp�t Contro�............................................................................................................. 5�

PWM Programming Examp�e................................................................................................ 53

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