CP2102N-A02-GQFN28R is a Silicon Labs USB-to-UART bridge in a 5 × 5 mm QFN-28 package with an exposed pad. The R suffix specifies tape-and-reel packing. On this 28-pin variant, UART I/O uses VDD; a separate VIO configuration from another package must not be assumed. Check the A02 revision errata, USB host configuration, VBUS/power design and target logic thresholds before approving the interface.
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