CY8CKIT-003A Cypress Semiconductor Corp, CY8CKIT-003A Datasheet - Page 22

• Manufacturer Part Number: CY8CKIT-003A
• Description: KIT DEV PSOC3 FIRSTTOUCH STARTER
• Manufacturer: Cypress Semiconductor Corp
• Series: PSoC® 3 FirstTouch™r
• Type: MCUr

Specifications of CY8CKIT-003A

• Contents: Board, Battery, Cable, CD, Documentation, Wire
• Lead Free Status / Rohs Status: Lead free by exemption / RoHS compliant by exemption
• For Use With/related Products: PSoC® 3
• Other names: 428-3113

Example Projects
4.3
4.3.1
22
ThermistorTemperatureSense
This project measures the current room temperature and displays it as a rasterized image when the
board is waved.
Running the ThermistorTemperatureSense project:
1. Connect the PSoC 3 FirstTouch Starter Kit board to the USB port of the PC through the USB
2. Click on the example project ThemistorTemperatureSense from Kits and Solutions present on
3. Make a folder in the desired location and click OK.
4. Project opens up in PSoC Creator and gets saved in that folder.
5. Follow step 1 to 4 in section
6. When the download is complete, remove the PSoC 3 FirstTouch Starter Kit board from the USB
7. Hold the board and wave it continuously from left to right as shown in
How the ThermistorTemperatureSense Project Works
The thermistor example demonstrates how the PSoC device senses temperature using a thermistor.
The thermistor resistance varies with temperature following a predictable nonlinear curve. The
temperature-resistance relationship is given by the Steinhart-Hart equation:
In this equation:
■
■
■
The same equation, when converted to Celsius scale becomes:
In this equation, T
cable.
the Startup page of the PSoC Creator.
to program the project into the PSoC 3 FirstTouch Starter Kit board.
port and connect a 9V DC battery to the battery connector of the PSoC 3 FirstTouch Starter Kit
board.
rasterized image of the current measured temperature in degree Celsius is visible in the air.
Press the S1 switch and continue to wave the board. The display has switched from Celsius to
Fahrenheit.
A, B, and C are empirical constants known as Steinhart-Hart coefficients.
R is the resistance of the thermistor in Ohms.
T
k
is the temperature in degree Kelvins.
c
is the temperature in degree Celsius.
CY8CKIT-003 PSoC 3 FirstTouch Starter Kit Guide, Spec. # 001-49613 Rev. *B
4.1.3 Build, Program, and Run the PSoC Rocks Project on page 14
1 /T
k
= A + B*ln(R) + C*(ln(R))
T
c
= T
k
- 273.15
3
Figure 3-1 on page
9. A