8.2 Revision 3

Revision 3 of SAM R21 Xplained Pro is the initial released version.

The VDDCORE capacitor C312 is mounted as 100nF on the SAM R21 Xplained Pro evaluation kit, while the ATSAMR21G18A datasheet recommends 1µF. Using 100nF for VDDCORE decoupling may create unwanted noise / ripple on the VDDCORE voltage.

Fix/Workaround:: Use a 1µF capacitor for new designs.

The online versions of the documents are provided as a courtesy. Verify all content and data in the device’s PDF documentation found on the device product page.