Silicon Labs CP210x: Is it OK to tie the NC pin to GND?
CP21xx
NC pins should be treated as described in the datasheet. If it is connected to GND, it may not work properly or a large current may flow.
| NC pin processing | |
| CP2102, CP2103, CP2109 | Not connected or connected to VDD |
| CP2104 | Not connected or connected to VIO |
| CP2105, CP2108 | disconnected |
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