SN8P2604A Datasheet, PDF (4/101 Pages) SONiX Technology Company – 8-Bit Micro-Controller

SN8P2604A
8-Bit Micro-Controller
3.1 OVERVIEW..................................................................................................................................... 38
3.2 POWER ON RESET......................................................................................................................... 39
3.3 WATCHDOG RESET...................................................................................................................... 39
3.4 BROWN OUT RESET ..................................................................................................................... 40
3.4.1 BROWN OUT DESCRIPTION ............................................................................................... 40
3.4.2 THE SYSTEM OPERATING VOLTAGE DECSRIPTION ................................................... 41
3.4.3 BROWN OUT RESET IMPROVEMENT .............................................................................. 41
3.5 EXTERNAL RESET ........................................................................................................................ 44
3.6 EXTERNAL RESET CIRCUIT ....................................................................................................... 44
3.6.1 Simply RC Reset Circuit .......................................................................................................... 44
3.6.2 Diode & RC Reset Circuit ........................................................................................................ 45
3.6.3 Zener Diode Reset Circuit ........................................................................................................ 45
3.6.4 Voltage Bias Reset Circuit ....................................................................................................... 46
3.6.5 External Reset IC...................................................................................................................... 47
44 _{SYSTEM CLOCK .................................................................................................................................. 48}
4.1 OVERVIEW..................................................................................................................................... 48
4.2 CLOCK BLOCK DIAGRAM .......................................................................................................... 48
4.3 OSCM REGISTER ........................................................................................................................... 49
4.4 SYSTEM HIGH CLOCK ................................................................................................................. 50
4.4.1 EXTERNAL HIGH CLOCK.................................................................................................... 50
4.4.1.1 CRYSTAL/CERAMIC......................................................................................................... 51
4.4.1.2 RC......................................................................................................................................... 51
4.4.1.3 EXTERNAL CLOCK SIGNAL........................................................................................... 52
4.5 SYSTEM LOW CLOCK .................................................................................................................. 53
4.5.1 SYSTEM CLOCK MEASUREMENT .................................................................................... 54
55 _{SYSTEM OPERATION MODE ........................................................................................................... 55}
5.1 OVERVIEW..................................................................................................................................... 55
5.2 SYSTEM MODE SWITCHING....................................................................................................... 56
5.3 WAKEUP ......................................................................................................................................... 58
5.3.1 OVERVIEW............................................................................................................................. 58
5.3.2 WAKEUP TIME ...................................................................................................................... 58
5.3.3 P1W WAKEUP CONTROL REGISTER ................................................................................ 58
66 _{INTERRUPT........................................................................................................................................... 59}
6.1 OVERVIEW..................................................................................................................................... 59
6.2 INTEN INTERRUPT ENABLE REGISTER................................................................................... 60
6.3 INTRQ INTERRUPT REQUEST REGISTER ................................................................................ 61
6.4 GIE GLOBAL INTERRUPT OPERATION .................................................................................... 61
6.5 PUSH, POP ROUTINE .................................................................................................................... 62
SONiX TECHNOLOGY CO., LTD
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