CY8CKIT-031 PSoC® CapSense® Expansion Board Kit Guide, Doc. # 001-66474 Rev. *H
34
Appendix
A.3
Bill of Materials (BOM)
A.4
Board Files
The board files for the CY3280 Matrix Button Module and CY3280 Linear Slider Module are avail-
able at
<Install_Directory>:\PSoC CapSense EBK\<version>\Hardware.
A.5
Shielding Electrode
Some applications require reliable operation in the presence of water films or droplets. White goods,
automotive applications, various industrial applications, and others need capacitive sensors that do
not provide false triggering because of water, ice, and humidity changes. In this case, a separate
shielding electrode can be used. This electrode is located behind or outside the sensing electrode.
When water films are located on the device insulation overlay surface, the coupling between the
shielding and sensing electrodes is increased. The shielding electrode allows you to reduce the
influence of parasitic capacitance, which gives you more dynamic range for processing sense capac-
itance changes.
In some applications, it is useful to select the shielding electrode signal and its placement relative to
the sensing electrode such that increasing the coupling between these electrodes causes the oppo-
site of the touch change of the sensing electrode capacitance measurement. This simplifies the high
level software API work. The CSD User Module supports separate output for the shielding electrode.
A.6
Regulatory Compliance Information
CY8CKIT-031 has been tested and verified to comply with the following electromagnetic compatibil-
ity (EMC) regulations.
■
CISPR 22 - Emissions
■
EN 55022 Class A - Immunity (Europe)
Item Qty. Reference
Value
Description
Manufacturer
Mfr Part Number
PCB
Cypress
PDC-09801 Rev**
1
1
J1
40 Pin Header
CONN HEADER .100 DUAL R/A
40POS
Sullins Electronics
Corp.
PBC20DBAN
2
1
J2
44 Pin Header
CONN FMALE 44POS DL .1" R/A
GOLD
Sullins Electronics
Corp.
PPPC222LJBN-RC
3
1
J3
5 Pin Header
CONN HEADER VERT 5POS .100
TIN
Molex/Waldom
Electronics
22-28-4050
4
2
R1, R2
Zero
RES 0.0 OHM 1/10W 5% 0805
SMD
Panasonic-ECG
ERJ-6GEY0R00V
Install on the bttom of the PCB as close to the corners as possible
5
2
N/A
BUMPER
BUMPER CLEAR .500X.23"
SQUARE
Richco Plastic Co
RBS-3R
