LONG_INTERVAL_PROGRAMMABLE_TIMER

Published:2009/7/11 0:53:00 Author:May | From:SeekIC

Using an RC oscillator, an up to 24-stage ripple counter (÷) 16777216 or 224, and a 0.1-Hz count-rate with R=39 kΩ, C2 =0.001 μF, and R4-220 k0 for example, the count cycle would take about 654 s. This example shows the capabilities of this time circuit, using the Motorola MC14536 timer. A low-frequency oscillator can be used for longer time periods.



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