Back to browse
CH9102F
WCH-IC, Single-Chip USB-to-UART Bridge, USB 2.0 Full-Speed, 4Mbps 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 | V3 | power_out |
| 7 | VDD5 | power_in |
| 8 | VBUS | input |
| 9 | ~{RST} | input |
| 10 | ~{ACT} | output |
| 11 | ~{WAKEUP}/GPIO3 | bidirectional |
| 12 | TNOW/GPIO2 | bidirectional |
| 13 | RXS/GPIO1 | bidirectional |
| 14 | TXS/GPIO0 | bidirectional |
| 15 | ~{SUSPEND} | output |
| 16 | GPIO4 | bidirectional |
| 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
—
—
—
—
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
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 |