HT46R004 datasheet(3/84 Pages) HOLTEK

3 / 84 page

Rev. 1.30

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Rev. 1.30

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HT46R004

Cost-Effective A/D 8-Bit OTP MCU

Power Down Mode and Wake-up.................................................................. 23

Powe� Down Mode................................................................................................................ �3

Ente�ing the Powe� Down Mode ........................................................................................... �3

Standb� C��ent Conside�ations........................................................................................... �3

Wake-�p................................................................................................................................ �4

Watchdog Timer............................................................................................. 25

Watchdog Time� Clock So��ce.............................................................................................. �5

Watchdog Time� Cont�ol Registe�s ....................................................................................... �5

Watchdog Time� Ope�ation ................................................................................................... ��

Reset and Initialization.................................................................................. 27

Reset F�nctions .................................................................................................................... �7

Reset Initial Conditions ......................................................................................................... 30

Input/Output Ports......................................................................................... 32

P�ll-high Resisto�s ................................................................................................................ 3�

Po�t A Wake-�p ..................................................................................................................... 33

I/O Po�t Cont�ol Registe�s..................................................................................................... 34

Pin-sha�ed F�nctions ............................................................................................................ 35

I/O Pin St��ct��es.................................................................................................................. 35

P�og�amming Conside�ations................................................................................................ 37

Timer/Event Counter ..................................................................................... 38

Configuring the Timer/Event Counter Input Clock Source .................................................... 38

Time� Registe� – TMR0......................................................................................................... 3�

Time� Cont�ol Registe� – TMR0C.......................................................................................... 3�

Time� Mode ........................................................................................................................... 41

Event Co�nte� Mode ............................................................................................................. 41

P�lse Width Capt��e Mode ................................................................................................... 4�

P�escale�............................................................................................................................... 43

PFD F�nction ........................................................................................................................ 43

I/O Inte�facing........................................................................................................................ 44

P�og�amming Conside�ations................................................................................................ 44

Time� P�og�am Example ....................................................................................................... 45

Pulse Width Modulator.................................................................................. 46

PWM Ope�ation..................................................................................................................... 4�

�+� PWM Mode .................................................................................................................... 4�

7+1 PWM Mode .................................................................................................................... 47

PWM O�tp�t Cont�ol............................................................................................................. 48

PWM P�og�amming Example................................................................................................ 48

Analog to Digital Converter ......................................................................... 49

A/D Ove�view ........................................................................................................................ 4�

A/D Conve�te� Data Registe�s – ADRL� ADRH ..................................................................... 4�

A/D Conve�te� Cont�ol Registe�s – ACSR� ADCR0� ADCR1................................................. 50

A/D Ope�ation ....................................................................................................................... 5�

A/D Inp�t Pins ....................................................................................................................... 53

S�mma�� of A/D Conve�sion Steps....................................................................................... 53

HT46R004 Datasheet(PDF) 3 Page - Holtek Semiconductor Inc

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