CY3270 PSoC® FirstTouch™ Kit Guide, Document No. 001-15945 Rev. *D
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Hardware
4.3
Expansion Card Overview
The FirstTouch expansion card is designed to plug and play with the FTPC bridge. All power for the
included expansion cards is provided by the FTPC bridge directly from the USB bus. No other power
supply is necessary when an expansion card is connected to the FTPC bridge. Connection to the
FTPC expansion port is through the 8×2 pin header on the expansion card.
The FirstTouch expansion cards have a dedicated host PSoC device installed. The particular PSoC
installed was chosen to act as an example as to which PSoC is most suitable for the types of appli-
cations that the particular expansion card supports. This also makes it easier to transfer your design
from the FirstTouch kit to your hardware.
By having a dedicated host PSoC, you can program and then remove the expansion card from the
FTPC bridge. When removed, it operates in a standalone mode or connects to your system-level
hardware. This creates a design that provides ‘PSoC Powered Peripherals’ and quickly integrates
them into your system. Before doing so, it is important to review the schematic for the particular
expansion card to determine the proper power and ground connections and voltage levels.
The expansion card contains a variety of peripheral components that allow you to experiment with
many different sensors and signal types. Each of the sensors use dedicated host PSoC I/O pins.
Therefore, it is important to note which pins connect the various sensors to the host PSoC. These
details are provided in the expansion card-specific portion of this guide.
4.4
Expansion Card Details
This section provides details for the expansion cards included with the CY3270 PSoC 1 FTK. Future
expansion cards will include additional documentation and demonstration projects that are specific
to their operation and configuration.
4.4.1
FirstTouch MultiFunction Expansion (FTMF) Card
The FTMF expansion card contains a CY8C21434 PSoC that acts as the 'host' for various demon-
strations. The FTMF expansion card has hardware to support the following PSoC-powered periph-
eral applications:
■
CapSense '7-Element Touch Slider'
■
CapSense 'NonTouch/Proximity Detection'
■
Ambient light-level detection
■
Thermistor-based temperature measurement
In addition to the above input sensors, the FTMF card also provides the following output devices:
■
Red-green-blue triple LED cluster
■
Buzzer
■
I
2
C digital communications
■
Four unused A/D GPIO lines for user functions
The dedicated sensors and output devices on the FTMF expansion card help you quickly evaluate
and experiment with a variety of PSoC applications, without having to build any hardware. Your
PSoC Designer project completely determines the remaining FTMF expansion card functions. The
kit installation contains demonstration projects that use the following input sensors:
■
CapSense slider
■
Temperature sensor
■
Ambient light sensor
■
CapSense proximity sensor