Every electronic device is required to comply with specific limits for emitted energy and susceptibility to external upsets. These limits are specified by the FCC in the US and by similar regulatory bodies in other countries. The regulations help assure that electronic devices will not interfere with each other, so that your computer will not interfere with your television, or worse yet, a hospital X-ray machine or ventilator will not corrupt the operation of a critical medical monitor. Modern high-speed digital electronics are capable of generating very high-speed signals that have the potential for radiating substantial amounts of noise. CMOS analog and digital circuits have essentially infinite input impedance. As a result, they can be quite sensitive to external fields and suitable precautions must be taken to ensure their proper operation in the presence of large amounts of radiated and conducted (interfering) energy. This Application Note will outline the basic specifications involved, provide guidance for secure and compliant designs and show the test results from a successful PSoC design.
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Example Project |
Supported H/W and S/W | Supported PSoC1 Devices | |||||||||
| PSoC Designer Version | H/W Kit |
CY8C20xxx |
CY8C21xxx |
CY8C22xxx |
CY8C23xxx |
CY8C24xxx |
CY8C27xxx |
CY8C28xxx |
CY8C29xxx |
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| No | N/A | N/A | x45 | x23A, x94 | x43 | ||||||
