SN8P1602B
8-Bit Micro-Controller
LOW VOLTAGE DETECTOR (LVD) DESCRIPTION ............................................................................ 37
7
OSCILLATORS ............................................................................................................................. 38
OVERVIEW................................................................................................................................................. 38
CLOCK BLOCK DIAGRAM .................................................................................................................... 38
OSCM REGISTER DESCRIPTION.......................................................................................................... 39
EXTERNAL HIGH-SPEED OSCILLATOR.............................................................................................. 40
OSCILLATOR MODE CODE OPTION................................................................................................... 40
OSCILLATOR DEVIDE BY 2 CODE OPTION ....................................................................................... 40
OSCILLATOR SAFE GUARD CODE OPTION....................................................................................... 40
SYSTEM OSCILLATOR CIRCUITS......................................................................................................... 41
External RC Oscillator Frequency Measurement .................................................................................... 42
INTERNAL LOW-SPEED OSCILLATOR ................................................................................................ 43
SYSTEM MODE DESCRIPTION............................................................................................................... 44
OVERVIEW .............................................................................................................................................. 44
NORMAL MODE...................................................................................................................................... 44
SLOW MODE ........................................................................................................................................... 44
GREEN MODE......................................................................................................................................... 44
POWER DOWN MODE ........................................................................................................................... 44
SYSTEM MODE CONTROL...................................................................................................................... 45
SYSTEM MODE SWITCHING................................................................................................................. 46
WAKEUP TIME .......................................................................................................................................... 47
OVERVIEW .............................................................................................................................................. 47
HARDWARE WAKEUP............................................................................................................................ 47
EXTERNAL WAKEUP TRIGGER CONTROL......................................................................................... 48
8
TIMERS .......................................................................................................................................... 49
WATCHDOG TIMER (WDT)..................................................................................................................... 49
TIMER0 (TC0)............................................................................................................................................. 50
OVERVIEW .............................................................................................................................................. 50
TC0M MODE REGISTER ........................................................................................................................ 51
TC0C COUNTING REGISTER ................................................................................................................ 52
TC0 TIMER OPERATION SEQUENCE .................................................................................................. 53
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Version 1.2
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