SN8P1800
8-bit micro-controller build-in 12-bit ADC + 72 dots LCD driver
OVERVIEW................................................................................................................................. 44
EXTERNAL RESET DESCRIPTION........................................................................................... 45
LOW VOLTAGE DETECTOR (LVD) DESCRIPTION.................................................................. 46
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OSCILLATORS................................................................................................................ 47
OVERVIEW................................................................................................................................. 47
CLOCK BLOCK DIAGRAM ..................................................................................................... 47
OSCM REGISTER DESCRIPTION......................................................................................... 48
OPTION REGISTER DESCRIPTION...................................................................................... 48
EXTERNAL HIGH-SPEED OSCILLATOR............................................................................... 49
OSCILLATOR MODE CODE OPTION.................................................................................... 49
OSCILLATOR DEVIDE BY 2 CODE OPTION......................................................................... 49
OSCILLATOR SAFE GUARD CODE OPTION ....................................................................... 49
SYSTEM OSCILLATOR CIRCUITS ........................................................................................ 50
External RC Oscillator Frequency Measurement .................................................................... 51
SYSTEM MODE DESCRIPTION................................................................................................ 52
OVERVIEW............................................................................................................................. 52
NORMAL MODE ..................................................................................................................... 52
SLOW MODE.......................................................................................................................... 52
GREEN MODE........................................................................................................................ 52
POWER DOWN MODE........................................................................................................... 52
SYSTEM MODE CONTROL....................................................................................................... 53
SN8P1800 SYSTEM MODE BLOCK DIAGRAM..................................................................... 53
SYSTEM MODE SWITCHING ................................................................................................ 54
WAKEUP TIME........................................................................................................................... 55
OVERVIEW............................................................................................................................. 55
HARDWARE WAKEUP........................................................................................................... 55
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TIMERS COUNTERS....................................................................................................... 56
WATCHDOG TIMER (WDT)....................................................................................................... 56
BASIC TIMER 0 ( T0 ) ................................................................................................................ 57
OVERVIEW............................................................................................................................. 57
T0M REGISTER DESCRIPTION ............................................................................................ 57
T0C COUNTING REGISTER .................................................................................................. 58
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Revision 1.94