Cypress Perform

Answer: Resolution is equal to the inverse of sensitivity. Sensitivity is calculated using the following formula:

Where:

For example, given the following User Module settings:

Resolution = 0.00543 pF

Note: Although the calculation indicates that a change as small as 0.00543 pF can be detected, raw-count noise limits the use of such high resolution. CapSense is not recommended for measuring absolute capacitances.

Note: The “sensitivity” calculated above is the capacitive measurement module sensitivity, not the system sensitivity to button/sensor activation.