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HT48R068B Datasheet(PDF) 3 Page - Holtek Semiconductor Inc

Part # HT48R068B
Description  Enhanced I/O 8-Bit OTP MCU
Download  118 Pages
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Manufacturer  HOLTEK [Holtek Semiconductor Inc]
Direct Link  http://www.holtek.com
Logo HOLTEK - Holtek Semiconductor Inc

HT48R068B Datasheet(HTML) 3 Page - Holtek Semiconductor Inc

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Rev. 1.30
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HT48R068B/HT48R069B
Enhanced I/O 8-Bit OTP MCU
HT48R068B/HT48R069B
Enhanced I/O 8-Bit OTP MCU
Oscillator ........................................................................................................ 32
S�stem Oscillato� Ove�view .................................................................................................. 3�
Exte�nal C��stal/Resonato� Oscillato� – HXT........................................................................ 3�
Exte�nal RC Oscillato� – ERC ............................................................................................... 33
Inte�nal RC Oscillato� – HIRC ............................................................................................... 34
Exte�nal 3�768Hz C��stal Oscillato� – LXT........................................................................... 34
LXT Oscillato� Low Powe� ��nction ...................................................................................... 3�
Inte�nal Low Speed Oscillato� – LIRC................................................................................... 3�
Operating Modes ........................................................................................... 36
Mode T�pes and Selection.................................................................................................... 36
Mode Switching..................................................................................................................... 37
Stand�� C���ent Conside�ations........................................................................................... 37
Wake-�p................................................................................................................................ 38
Watchdog Time� Ope�ation ................................................................................................... 39
Reset and Initialisation.................................................................................. 40
Reset ��nctions .................................................................................................................... 41
Reset Initial Conditions ......................................................................................................... 43
Input/Output Ports......................................................................................... 45
P�ll-high Resisto�s ................................................................................................................ 4�
Po�t A Wake-�p ..................................................................................................................... 4�
I/O Po�t Cont�ol Registe�s..................................................................................................... 47
Pin-sha�ed ��nctions ............................................................................................................ 48
Pin Remapping Configuration ............................................................................................... 49
I/O Pin St��ct��es.................................................................................................................. 49
P�og�amming Conside�ations................................................................................................ �1
Timer/Event Counters ................................................................................... 51
Configuring the Timer/Event Counter Input Clock Source .................................................... �1
Time� Registe�s – TMR0� TMR1� TMR�L� TMR�H ............................................................... ��
Time� Cont�ol Registe�s – TMR0C� TMR1C� TMR�C ........................................................... ��
Time� Mode ........................................................................................................................... �6
Event Co�nte� Mode ............................................................................................................. �6
P�lse Width Capt��e Mode ................................................................................................... �7
P�escale�............................................................................................................................... �8
P�D ��nction ........................................................................................................................ �8
I/O Inte�facing........................................................................................................................ �9
P�og�amming Conside�ations................................................................................................ �9
Time� P�og�am Example ....................................................................................................... 60
Time Base ............................................................................................................................. 60
Pulse Width Modulator.................................................................................. 61
PWM Ope�ation..................................................................................................................... 6�
6+� PWM Mode .................................................................................................................... 6�
7+1 PWM Mode .................................................................................................................... 63
PWM O�tp�t Cont�ol............................................................................................................. 64


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