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HT48R006 Datasheet(PDF) 3 Page - Holtek Semiconductor Inc |
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HT48R006 Datasheet(HTML) 3 Page - Holtek Semiconductor Inc |
3 / 72 page System Control Registers - CTRL0, CTRL1.........................................................20 Wake-up Function Register - PAWK ....................................................................20 Pull-high Registers - PAPU ..................................................................................20 Oscillator............................................................................................22 System Oscillator Overview.............................................................................................................22 System Clock Configurations................................................................................22 External Crystal/Resonator Oscillator - HXT ........................................................22 External RC Oscillator - ERC...............................................................................22 Internal RC Oscillator - HIRC...............................................................................23 External 32768Hz Crystal Oscillator - LXT...........................................................23 LXT Oscillator Low Power Function ......................................................................23 Internal Low Speed Oscillator - LIRC...................................................................23 Operating Modes ...............................................................................24 Mode Types and Selection ...................................................................................24 Mode Switching ....................................................................................................24 Standby Current Considerations...........................................................................25 Wake-up...............................................................................................................25 Watchdog Timer ................................................................................26 Watchdog Timer Operation...................................................................................26 Reset and Initialisation .....................................................................27 Reset Functions ...................................................................................................27 Reset Initial Conditions .........................................................................................28 HT46R006............................................................................................................29 HT48R006............................................................................................................30 Input/Output Ports.............................................................................31 Pull-high Resistors................................................................................................31 Port A Wake-up ....................................................................................................31 I/O Port Control Registers.....................................................................................32 Pin-shared Functions............................................................................................32 I/O Pin Structures .................................................................................................34 Programming Considerations ...............................................................................34 Timer/Event Counters .......................................................................34 Configuring the Timer/Event Counter Input Clock Source .....................................34 Timer Registers - TMR0, TMR1 ...........................................................................34 Timer Control Registers - TMR0C, TMR1C..........................................................38 Timer Mode ..........................................................................................................38 Event Counter Mode.............................................................................................38 Pulse Width Capture Mode...................................................................................39 Prescaler ..............................................................................................................40 Buzzer Function -- HT48R006 ..............................................................................40 PFD Function -- HT46R006 ..................................................................................41 I/O Interfacing.......................................................................................................41 HT48R006/HT46R006 Rev. 1.00 iii October 24, 2011 |
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