Hi, RI or Emissions are largely system and implementation specific. EMI/EMC testing is done at a system level based on a completed design for products. Certifications are not given out at an MCU device level. Any pretesting must be done with the completed system for it to be valid. Just because the MCU functions properly for EMC does not guarantee the whole system would do so after layout of additional components. That said, from a system standpoint, our TM4C1294NCPDT has been tested for EMC based on EMC Direction 2014 EU standards for our EK-TM4C1294XL LaunchPad and has passed. The Declaration of Conformity can be seen here: https://www.ti.com/lit/pdf/sszq113 The general best practices for EMC is to use proper grounding and shielding techniques to prevent unwanted electrical signals from entering or leaving the device. Grounding involves connecting the device to a ground plane or earth ground which provides a low-impedance path for unwanted electrical signals to dissipate. This article about EMI reduction may also help. https://www.ti.com/lit/wp/slyy200/slyy200.pdf
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