Datasheet

CY8C21x34/B CapSense
®
Design Guide Document No. 001-66271 Rev. *B 27
3.11 SmartSense User Module Parameters
Figure 3-8. PSoC Designer SmartSense Parameters
3.12 Low-Level Parameters
3.12.1 Shield Electrode Out
A shield electrode is used to reduce parasitic capacitance. The shield electrode signal can be routed to one of the
free digital row buses (Row_0_Output_1 – Row_0_Output_3). Each row output can then be routed to one of the
allowed pins. Set the Row LUT Function to A.
3.12.2 Modulator Capacitor Pin
This parameter sets the pin to connect the external modulator capacitor (C
MOD
). Choose from the available pins P0[1],
P0[3].
3.12.3 Feedback Resistor Pin
This parameter sets the pin to connect the external feedback resistor (R
b
). Choose from the available pins: P1[1],
P1[5], P3[1]. Some pins are not available on some device packages. Use pins P1[5] or P3[1] to avoid programming
problems.
3.12.4 Threshold Setting Mode
Use this parameter to select between Automatic and Manual threshold settings.
3.12.5 Sensitivity Level
This parameter is used to increase and decrease the sensitivity of a sensor. Possible values are 0.1 pF (highest
sensitivity), 0.2 pF, and 0.4 pF (lowest sensitivity). Use a higher sensitivity setting for thicker overlay on capacitive
sensors.
High-Level
Low-Level
Low-Level
Low-Level
High-Level