Design Considerations for Using PSoC in a Noisy Environment
Anonymous
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Mar 26, 2011
02:27 AM
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Mar 26, 2011
02:27 AM
Question: What should be the design considerations for using PSoC1 in Noisy environment ?
Answer:
Consider the following design tips when using PSoC in a noisy environment such as near large DC motors:
-Stable supply voltage and ground are very important.
-You want an output impedance on SCLK (P1[1]) and SDATA (P1[0]). Noise on the SCLK signal can be perceived as a clock and place the part in test mode. We generally recommend you to connect 300 Ohms resistor on the P1[1] and P1[0] lines.
- Place a 10uF and a 0.1uF (ceramic) decoupling capacitors on the power supply to cover most frequencies of noise.
If you are using Capsense controllers, you can find more information on Design Considerations here: Getting Started with Capsense
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