SN8P1600
8-bit micro-controller
7
OSCILLATORS ............................................................................................................................. 41
OVERVIEW................................................................................................................................................. 41
CLOCK BLOCK DIAGRAM .................................................................................................................... 41
OSCM REGISTER DESCRIPTION.......................................................................................................... 42
EXTERNAL HIGH-SPEED OSCILLATOR .............................................................................................. 43
OSCILLATOR MODE CODE OPTION ................................................................................................... 43
OSCILLATOR DEVIDE BY 2 CODE OPTION........................................................................................ 43
OSCILLATOR SAFE GUARD CODE OPTION....................................................................................... 43
SYSTEM OSCILLATOR CIRCUITS ......................................................................................................... 44
External RC Oscillator Frequency Measurement .................................................................................... 45
INTERNAL LOW-SPEED OSCILLATOR................................................................................................. 46
SYSTEM MODE DESCRIPTION............................................................................................................... 47
OVERVIEW .............................................................................................................................................. 47
NORMAL MODE...................................................................................................................................... 47
SLOW MODE ........................................................................................................................................... 47
POWER DOWN MODE ........................................................................................................................... 47
SYSTEM MODE CONTROL...................................................................................................................... 48
SYSTEM MODE SWITCHING ................................................................................................................. 49
WAKEUP TIME .......................................................................................................................................... 50
OVERVIEW .............................................................................................................................................. 50
HARDWARE WAKEUP............................................................................................................................ 50
8
TIMERS .......................................................................................................................................... 51
WATCHDOG TIMER (WDT)..................................................................................................................... 51
TIMER0 (TC0) (SN8P1602/1603 O
NLY
) .................................................................................................... 52
OVERVIEW .............................................................................................................................................. 52
TC0M MODE REGISTER ........................................................................................................................ 53
TC0C COUNTING REGISTER ................................................................................................................ 54
TC0 TIMER OPERATION SEQUENCE .................................................................................................. 55
TIMER1 (TC1) (SN8P1604 O
NLY
).............................................................................................................. 56
OVERVIEW .............................................................................................................................................. 56
TC1M MODE REGISTER ........................................................................................................................ 57
TC1C COUNTING REGISTER ................................................................................................................ 58
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