Rc Oscillation Monitor - Oki ML63611 User Manual

ML63611 User's Manual
Chapter 16 A/D Converter (ADC)

16.3.4 RC Oscillation Monitor

By setting Bit 0 (MON) of the Port E mode register (PEMOD) to "1", the RC oscillation clock (OSCCLK) can be
output to PE.0.
The RC oscillation monitor is useful when checking the characteristics of the RC oscillation circuit. For instance,
it is possible to measure the relationship between sensors such as a thermistor and an oscillation frequency. For
example, by examining the relationship between ambient temperature of a thermistor built-in RC oscillation
circuit and oscillation frequencies of the thermistor RT0 and the reference resistance RS0, it is possible to obtain
the conversion coefficient from the value of nA1 to the temperature display values.
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OPTION A (C): 1.5 V (3.0 V), Without regulator OPTION B (D): 1.5 V (3.0 V), With regulator
circuit for LCD bias circuit for LCD bias