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HT68F002 Datasheet(PDF) 3 Page - Holtek Semiconductor Inc |
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HT68F002 Datasheet(HTML) 3 Page - Holtek Semiconductor Inc |
3 / 119 page Rev. 1.41 2 April 11, 2017 Rev. 1.41 3 April 11, 2017 HT68F002/HT68F0025/HT68F003 Cost-Effective Flash MCU with EEPROM HT68F002/HT68F0025/HT68F003 Cost-Effective Flash MCU with EEPROM EEPROM Data Memory.................................................................................. 28 EEPROM Data Memory Structure ........................................................................................ 28 EEPROM Registers .............................................................................................................. 28 Reading Data from the EEPROM ........................................................................................ 30 Writing Data to the EEPROM................................................................................................ 30 Write Protection..................................................................................................................... 30 EEPROM Interrupt ................................................................................................................ 30 Programming Considerations................................................................................................ 31 Oscillators ...................................................................................................... 32 Oscillator Overview ............................................................................................................... 32 System Clock Configurations................................................................................................ 32 Internal RC Oscillator – HIRC ............................................................................................... 32 Internal 32kHz Oscillator – LIRC........................................................................................... 33 Supplementary Oscillator...................................................................................................... 33 Operating Modes and System Clocks ......................................................... 33 System Clocks ...................................................................................................................... 33 System Operation Modes...................................................................................................... 34 Control Register .................................................................................................................... 36 Operating Mode Switching ................................................................................................... 38 Standby Current Considerations........................................................................................... 42 Wake-up................................................................................................................................ 42 Watchdog Timer............................................................................................. 43 Watchdog Timer Clock Source.............................................................................................. 43 Watchdog Timer Control Register ......................................................................................... 43 Watchdog Timer Operation ................................................................................................... 44 Reset and Initialisation.................................................................................. 45 Reset Functions .................................................................................................................... 45 Reset Initial Conditions ......................................................................................................... 48 Input/Output Ports......................................................................................... 50 Pull-high Resistors ................................................................................................................ 51 Port A Wake-up ..................................................................................................................... 52 I/O Port Control Registers..................................................................................................... 52 Pin-Shared Functions............................................................................................................ 53 I/O Pin Structures.................................................................................................................. 56 Programming Considerations................................................................................................ 56 Timer Modules – TM ...................................................................................... 57 Introduction ........................................................................................................................... 57 TM Operation ........................................................................................................................ 57 TM Clock Source................................................................................................................... 57 TM Interrupts......................................................................................................................... 58 TM External Pins................................................................................................................... 58 TM Input/Output Pin Control ................................................................................................. 58 Programming Considerations................................................................................................ 59 |
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