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Silicon Labs CP210x: How do I handle unused pins on the CP2105?
CP21xx
Unused pins of CP2105 should be handled as follows.
| UART pins (TXD, RXD) | disconnected |
| Flow control pins (CTS, RTS, DSR, DTR, DCD, RI) | Not connected (as described in the datasheet) |
| Suspend pin (SUSPEND, /SUSPEND) | Not connected (as described in the datasheet) |
| GPIO pins | Not connected (as described in the datasheet) |
| VPP pin | Not connected (as described in the datasheet) |
| NC pin | Not connected (as described in the datasheet) |
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