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HT56R642 Datasheet(PDF) 3 Page - Holtek Semiconductor Inc

Part # HT56R642
Description  TinyPowerTM A/D Type with LCD 8-Bit OTP MCU
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Manufacturer  HOLTEK [Holtek Semiconductor Inc]
Direct Link  http://www.holtek.com
Logo HOLTEK - Holtek Semiconductor Inc

HT56R642 Datasheet(HTML) 3 Page - Holtek Semiconductor Inc

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Rev. 1.30
�a��� �� �013
Rev. 1.30
3
�a��� �� �013
HT56R62/HT56R65
HT56R642/HT56R644/HT56R654/HT56R656
TinyPowerTM A/D Type with LCD 8-Bit OTP MCU
HT56R62/HT56R65
HT56R642/HT56R644/HT56R654/HT56R656
TinyPowerTM A/D Type with LCD 8-Bit OTP MCU
Se�ial Inte�fa�e Registe�s...................................................................................................... 37
Port A Wake-up Register − PAWU ........................................................................................ 37
Pull-High Resistors − PAPU, PBPU, PDPU .......................................................................... 37
Register − CLKMOD ............................................................................................................. 37
LCD/LED Registe�s – LCDCTRL� LEDCTRL� LCDOUT1� LCDOUT� .................................. 37
Miscellaneous Register − MISC............................................................................................ 37
Input/Output Ports ......................................................................................... 38
Pull-�ig� Resisto�s ................................................................................................................ 38
Po�t A Wake-up ..................................................................................................................... 38
Po�t A Open D�ain Fun�tion .................................................................................................. 38
I/O Po�t Cont�ol Registe�s ..................................................................................................... 39
Pin-s�a�ed Fun�tions ............................................................................................................ 39
I/O Pin St�u�tu�es.................................................................................................................. 40
P�og�amming Conside�ations................................................................................................ 41
LCD and LED Driver ...................................................................................... 42
Display �emo�y .................................................................................................................... 45
LCD/LED Registe�s............................................................................................................... 4�
LCD Reset Fun�tion.............................................................................................................. 49
Clo�k Sou��e......................................................................................................................... 49
LCD D�ive� Output................................................................................................................. 49
LED D�ive� Output................................................................................................................. 50
LCD Voltage Sou��e and Biasing.......................................................................................... 50
P�og�amming Conside�ations................................................................................................ 51
Timer/Event Counters ................................................................................... 58
Configuring the Timer/Event Counter Input Clock Source .................................................... 58
Timer Registers − TMR0, TMR1, TMR1L/TMR1H, TMR2..................................................... 59
Timer Control Registers − TMR0C, TMR1C, TMR2C ........................................................... �0
Configuring the Timer Mode.................................................................................................. ��
Configuring the Event Counter Mode.................................................................................... �3
Configuring the Pulse Width Measurement Mode................................................................. �4
Programmable Frequency Divider − PFD ............................................................................. �5
P�es�ale� ............................................................................................................................... �5
I/O Inte�fa�ing........................................................................................................................ �5
Time�/Event Counte� Pins Inte�nal Filte� ............................................................................... ��
P�og�amming Conside�ations................................................................................................ ��
Time� P�og�am Example ....................................................................................................... �7
Pulse Width Modulator.................................................................................. 68
PW� Ove�view ..................................................................................................................... �8
8+4 PW� �ode �odulation.................................................................................................. �9
PW� Output Cont�ol ............................................................................................................. �9
PW� P�og�amming Example................................................................................................ 70


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