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CP2104
Single-Chip USB-to-UART Bridge, USB 2.0 Full-Speed, 2Mbps UART, QFN-24
Schematic Symbol
Pin Configuration (25 pins)
| Pin | Name | Type |
|---|---|---|
| 1 | ~{RI} | input |
| 2 | GND | power_in |
| 3 | D+ | bidirectional |
| 4 | D- | bidirectional |
| 5 | VIO | power_in |
| 6 | VDD | power_in |
| 7 | REGIN | power_in |
| 8 | VBUS | input |
| 9 | ~{RST} | bidirectional |
| 10 | NC | no_connect |
| 11 | GPIO.3 | bidirectional |
| 12 | RS485/GPIO.2 | bidirectional |
| 13 | RXT/GPIO.1 | bidirectional |
| 14 | TXT/GPIO.0 | bidirectional |
| 15 | ~{SUSPEND} | output |
| 16 | VPP | passive |
| 17 | SUSPEND | output |
| 18 | ~{CTS} | input |
| 19 | ~{RTS} | output |
| 20 | RXD | input |
| 21 | TXD | output |
| 22 | ~{DSR} | input |
| 23 | ~{DTR} | output |
| 24 | ~{DCD} | input |
| 25 | GND | passive |
Footprint
ConfirmedPackage_DFN_QFN/QFN-24-1EP_4x4mm_P0.5mm_EP2.6x2.6mm
Pad Layout
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Pads (29)
| Number | Type |
|---|---|
| — | smd |
| — | smd |
| — | smd |
| — | smd |
| 1 | smd |
| 2 | smd |
| 3 | smd |
| 4 | smd |
| 5 | smd |
| 6 | smd |
| 7 | smd |
| 8 | smd |
| 9 | smd |
| 10 | smd |
| 11 | smd |
| 12 | smd |
| 13 | smd |
| 14 | smd |
| 15 | smd |
| 16 | smd |
| 17 | smd |
| 18 | smd |
| 19 | smd |
| 20 | smd |
| 21 | smd |
| 22 | smd |
| 23 | smd |
| 24 | smd |
| 25 | smd |