Low power, cost effective, temperature compensated real time clock and method of clocking systems

摘要

A temperature compensated clock and method of clocking systems are provided. The clock preferably has an oscillator for generating an oscillating waveform signal at a preselected frequency and a frequency divider responsive to the oscillator for dividing the frequency of the oscillating waveform signal. A temperature monitoring circuit is positioned responsive to a voltage input signal independent of temperature and a voltage input signal proportional to temperature for monitoring temperature variations. A temperature compensating circuit, preferably including a programmable scaling circuit, is responsive to the frequency divider and the temperature monitoring circuit for scaling the divided frequency of the generated waveform and thereby advantageously produces a temperature compensated output timing signal.