Application Notes

AN-1071 Delay cell calculations in GreenPAK3 Family CMIC’s

When using a delay cell in a GreenPAK design, one must consider the accuracy of the delay cell. This is because the GreenPAK IC delay time depends on the clock frequency and counter data. If the counter data is a fixed value, the clock frequency can vary, especially if internal RC OSC is used. That is why the accuracy of the delay cell is determined by the OSC inaccuracy. This application note offers a way to calculate the accuracy of the delay cell in a GreenPAK3 IC in different cases such as: 25kHz or 2MHz RC OSC used, different VDD voltages or ranges, different temperatures, different combinations of the delay cells connections.

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Tags

Delay Time, Oscillator, Variation, Series Connection


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