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HT45F12 Datasheet(PDF) 3 Page - Holtek Semiconductor Inc |
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HT45F12 Datasheet(HTML) 3 Page - Holtek Semiconductor Inc |
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3 / 104 page  Rev. 0.00 � �e�te��e� ��� �01� Rev. 0.00 3 �e�te��e� ��� �01� HT45F12 8-Bit Flash MCU with Op Amps & Comparators HT45F12 8-Bit Flash MCU with Op Amps & Comparators EEPROM Data Memory.................................................................................. 29 EEPROM Data Me�o�y �t�uctu�e ........................................................................................ �9 EEPROM Registe�s .............................................................................................................. �9 Reading Data f�o� the EEPROM ......................................................................................... 31 W�iting Data to the EEPROM................................................................................................ 31 W�ite P�otection..................................................................................................................... 31 EEPROM Inte��u�t ................................................................................................................ 31 P�og�a��ing Conside�ations................................................................................................ 3� Oscillator ....................................................................................................... 33 Oscillato� Ove�view ............................................................................................................... 33 System Clock Configurations................................................................................................ 33 Exte�nal C�ystal/Ce�a�ic Oscillato� – HXT ........................................................................... 34 Exte�nal RC Oscillato� – ERC ............................................................................................... 35 Exte�nal Oscillato� – EC........................................................................................................ 35 Inte�nal RC Oscillato� – HIRC ............................................................................................... 35 Inte�nal 3�kHz Oscillato� – LIRC........................................................................................... 35 Operating Modes and System Clocks ........................................................ 36 �yste� Clocks ...................................................................................................................... 3� �yste� O�e�ation Modes...................................................................................................... 3� Cont�ol Registe� .................................................................................................................... 39 Fast Wake-u�........................................................................................................................ 40 O�e�ating Mode �witching and Wake-u�.............................................................................. 41 �LOW Mode to NORMAL Mode �witching........................................................................... 43 Ente�ing the �LEEP0 Mode .................................................................................................. 43 Ente�ing the �LEEP1 Mode .................................................................................................. 43 Ente�ing the IDLE0 Mode...................................................................................................... 43 Ente�ing the IDLE1 Mode...................................................................................................... 44 �tand�y Cu��ent Conside�ations........................................................................................... 44 Wake-u�................................................................................................................................ 44 Watchdog Timer............................................................................................. 45 Watchdog Ti�e� Clock �ou�ce.............................................................................................. 45 Watchdog Ti�e� Cont�ol Registe� ......................................................................................... 45 Watchdog Ti�e� O�e�ation ................................................................................................... 4� Reset and Initialisation.................................................................................. 48 Reset Functions .................................................................................................................... 48 Reset Initial Conditions ......................................................................................................... 50 Input/Output Ports......................................................................................... 52 Pull-high Resisto�s ................................................................................................................ 5� Po�t A Wake-u� ..................................................................................................................... 53 I/O Po�t Cont�ol Registe�s..................................................................................................... 54 I/O Pin �t�uctu�es.................................................................................................................. 55 P�og�a��ing Conside�ations................................................................................................ 5� |
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