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BC68FB540 데이터시트(PDF) 3 Page - Holtek Semiconductor Inc |
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BC68FB540 데이터시트(HTML) 3 Page - Holtek Semiconductor Inc |
3 / 200 page Rev. 1.10 � De�e��e� ��� �01� Rev. 1.10 3 De�e��e� ��� �01� BC68FB540 I/O Flash USB 8-Bit MCU with 2.4GHz RF Transceiver BC68FB540 I/O Flash USB 8-Bit MCU with 2.4GHz RF Transceiver Oscillator ........................................................................................................ 38 Os�illato� Ove�view ............................................................................................................... 38 System Clock Configurations................................................................................................ 38 Exte�nal C�ystal Os�illato� – HXT.......................................................................................... 39 Inte�nal PLL F�equen�y Gene�ato�........................................................................................ �0 Inte�nal High Speed RC Os�illato� – HIRC ........................................................................... �� Inte�nal Low Speed 3�kHz RC Os�illato� – LIRC.................................................................. �� Supple�enta�y Inte�nal Clo�ks ............................................................................................. �� Operating Modes and System Clocks ......................................................... 43 Syste� Clo�ks ...................................................................................................................... �3 Syste� Ope�ation Modes...................................................................................................... �3 Cont�ol Registe� .................................................................................................................... �5 Fast Wake-up........................................................................................................................ �6 Ope�ating Mode Swit�hing.................................................................................................... �7 Stand�y Cu��ent Conside�ations........................................................................................... 51 Wake-up................................................................................................................................ 51 P�og�a��ing Conside�ations................................................................................................ 5� Watchdog Timer............................................................................................. 52 Wat�hdog Ti�e� Clo�k Sou��e.............................................................................................. 5� Wat�hdog Ti�e� Cont�ol Registe� ......................................................................................... 5� Wat�hdog Ti�e� Ope�ation ................................................................................................... 5� Reset and Initialisation.................................................................................. 55 Reset Ove�view..................................................................................................................... 55 Reset Fun�tions .................................................................................................................... 56 Reset Initial Conditions ......................................................................................................... 59 Input/Output Ports......................................................................................... 63 Pull-high Resisto�s ................................................................................................................ 6� Po�t Wake-up ........................................................................................................................ 65 Po�t A Wake-up Pala�ity Cont�ol Registe� ............................................................................. 65 I/O Po�t Cont�ol Registe�s..................................................................................................... 66 Po�t A Powe� Sou��e Cont�ol Registe�.................................................................................. 67 I/O Pin St�u�tu�es.................................................................................................................. 69 P�og�a��ing Conside�ations................................................................................................ 69 Timer Modules – TM ...................................................................................... 70 Int�odu�tion ........................................................................................................................... 70 TM Ope�ation ........................................................................................................................ 70 TM Clo�k Sou��e................................................................................................................... 71 TM Inte��upts......................................................................................................................... 71 TM Exte�nal Pins................................................................................................................... 71 TM Input/Output Pin Cont�ol Registe�s ................................................................................. 7� P�og�a��ing Conside�ations................................................................................................ 75 |
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