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HT85F2250 Datasheet(PDF) 4 Page - Holtek Semiconductor Inc |
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HT85F2250 Datasheet(HTML) 4 Page - Holtek Semiconductor Inc |
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4 / 187 page  Rev. 1.10 4 of 187 ���� �1� �01� A/D Flash 8051 Core Low Pin Count MCU HT85F2250/HT85F2262 23 Reset and Initialisation....................................................................................... 72 Reset Overview................................................................................................................. 7� Reset Operations .............................................................................................................. 7� Reset So�rce Register – RSTSRC............................................................................................... 7� Power-on Reset............................................................................................................................ 74 RESET Pin Reset......................................................................................................................... 7� Low Vo�tage Reset – LVR............................................................................................................. 76 Watchdog Reset .......................................................................................................................... 77 Comparator 0 Reset ..................................................................................................................... 78 Software Resets ........................................................................................................................... 78 SRST Register Software Reset.................................................................................................... 79 WDTCR Register Software Reset ................................................................................................ 79 LVRCR Register Software Reset.................................................................................................. 80 Reset Initia� Conditions...................................................................................................... 80 24 Interrupts............................................................................................................. 86 Interr�pt Registers............................................................................................................. 86 Interr�pt Operation ............................................................................................................ 94 Interr�pt Priorit�................................................................................................................. 9� Priorit� Leve�s............................................................................................................................... 9� Priorit� Contro� Registers.............................................................................................................. 96 Externa� Interr�pt............................................................................................................. 100 Comparator Interr�pt....................................................................................................... 100 A/D Converter Interr�pt ................................................................................................... 100 Timer/Co�nter Interr�pt ................................................................................................... 101 Time Base Interr�pts ....................................................................................................... 101 I�C Interface Interr�pt ...................................................................................................... 10� UART Interface Interr�pt ................................................................................................. 10� LVD Interr�pt ................................................................................................................... 10� Interr�pt Wake-�p F�nction............................................................................................. 10� Programming Considerations.......................................................................................... 10� 25 Input/Output Ports............................................................................................ 104 Inp�t/O�tp�t Port Overview............................................................................................. 104 Register Description........................................................................................................ 104 PnM0/PnM1 Registers – Port Mode Registers........................................................................... 106 P0WAKE Register – Port 0 Wake-�p ......................................................................................... 108 SRCR Register – S�ew Rate Contro�.......................................................................................... 108 Pin-remapping F�nction .................................................................................................. 109 PRM Register – Pin-remapping Contro� Register....................................................................... 109 I/O Pin Str�ct�res............................................................................................................ 110 |
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