SN8P2501DP データシートの表示（PDF） - Sonix Technology Co., Ltd
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SN8P2501DP Datasheet PDF : 93 Pages
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SN8P2501D
8-Bit Micro-Controller
3.9.2 Diode & RC Reset Circuit ........................................................................................................ 36
3.9.3 Zener Diode Reset Circuit ........................................................................................................ 36
3.9.4 Voltage Bias Reset Circuit ....................................................................................................... 37
3.9.5 External Reset IC ...................................................................................................................... 37
44 SYSTEM CLOCK .................................................................................................................................. 38
4.1 OVERVIEW ..................................................................................................................................... 38
4.2 FCPU (INSTRUCTION CYCLE)...................................................................................................... 38
4.3 NOISE FILTER ................................................................................................................................ 39
4.4 SYSTEM HIGH-SPEED CLOCK.................................................................................................... 39
4.4.1 HIGH_CLK CODE OPTION................................................................................................... 39
4.4.2 INTERNAL HIGH-SPEED OSCILLATOR RC TYPE (IHRC) ............................................. 39
4.4.3 EXTERNAL HIGH-SPEED OSCILLATOR........................................................................... 39
4.4.4 EXTERNAL OSCILLATOR APPLICATION CIRCUIT ....................................................... 40
4.5 SYSTEM LOW-SPEED CLOCK..................................................................................................... 41
4.6 OSCM REGISTER ........................................................................................................................... 42
4.7 SYSTEM CLOCK MEASUREMENT ............................................................................................. 42
4.8 SYSTEM CLOCK TIMING............................................................................................................. 43
55 SYSTEM OPERATION MODE ........................................................................................................... 46
5.1 OVERVIEW ..................................................................................................................................... 46
5.2 NORMAL MODE ............................................................................................................................ 47
5.3 SLOW MODE .................................................................................................................................. 47
5.4 POWER DOWN MODE .................................................................................................................. 47
5.5 GREEN MODE ................................................................................................................................ 48
5.6 OPERATING MODE CONTROL MACRO .................................................................................... 49
5.7 WAKEUP ......................................................................................................................................... 50
5.7.1 OVERVIEW ............................................................................................................................. 50
5.7.2 WAKEUP TIME ...................................................................................................................... 50
5.7.3 P1W WAKEUP CONTROL REGISTER ................................................................................ 51
66 INTERRUPT........................................................................................................................................... 52
6.1 OVERVIEW ..................................................................................................................................... 52
6.2 INTEN INTERRUPT ENABLE REGISTER ................................................................................... 52
6.3 INTRQ INTERRUPT REQUEST REGISTER ................................................................................ 53
6.4 GIE GLOBAL INTERRUPT OPERATION .................................................................................... 53
6.5 PUSH, POP ROUTINE..................................................................................................................... 54
6.6 EXTERNAL INTERRUPT OPERATION (INT0)........................................................................... 55
6.7 T0 INTERRUPT OPERATION........................................................................................................ 56
6.8 TC0 INTERRUPT OPERATION ..................................................................................................... 58
6.9 MULTI-INTERRUPT OPERATION............................................................................................... 59
77 I/O PORT ................................................................................................................................................ 60
7.1 OVERVIEW ..................................................................................................................................... 60
7.2 I/O PORT MODE ............................................................................................................................. 61
7.3 I/O PULL UP REGISTER ................................................................................................................ 62
7.4 I/O OPEN-DRAIN REGISTER........................................................................................................ 63
7.5 I/O PORT DATA REGISTER .......................................................................................................... 64
88 TIMERS .................................................................................................................................................. 65
8.1 WATCHDOG TIMER...................................................................................................................... 65
8.2 TIMER 0 (T0) ................................................................................................................................... 67
8.2.1 OVERVIEW ............................................................................................................................. 67
8.2.2 T0 Timer Operation .................................................................................................................. 68
8.2.3 T0M MODE REGISTER ......................................................................................................... 69
8.2.4 T0C COUNTING REGISTER ................................................................................................. 69
8.2.5 T0 TIMER OPERATION EXPLAME..................................................................................... 70
SONiX TECHNOLOGY CO., LTD
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Version 1.2
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