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CH344Q
USB to Quad Serial Ports Chip, LQFP-48
Schematic Symbol
Pin Configuration (48 pins)
| Pin | Name | Type |
|---|---|---|
| 19 | ~{DTR2}/TNOW2/GPIO9 | bidirectional |
| 20 | GND | passive |
| 1 | NC | no_connect |
| 2 | ~{DSR2} | input |
| 3 | ~{RI2} | input |
| 4 | ~{DCD2} | input |
| 5 | XI | input |
| 6 | XO | output |
| 7 | ~{RESET} | input |
| 8 | GND | power_in |
| 9 | VCC | power_in |
| 10 | ~{CTS1}/GPIO2 | bidirectional |
| 11 | ~{RTS1}/GPIO3 | bidirectional |
| 12 | TXD1 | output |
| 13 | RXD1 | input |
| 14 | ~{ACT}/~{CFG}/~{DCD3} | bidirectional |
| 15 | TX_S/~{RI3} | bidirectional |
| 16 | RX_S/~{DSR3} | bidirectional |
| 17 | ~{DSR1} | input |
| 18 | ~{DTR1}/TNOW1/GPIO9 | bidirectional |
| 21 | TXD2 | output |
| 22 | RXD2 | input |
| 23 | GND | passive |
| 24 | VCC | power_in |
| 25 | ~{RI1} | input |
| 26 | ~{CTS2}/GPIO4 | bidirectional |
| 27 | ~{RTS2}/GPIO5 | bidirectional |
| 28 | ~{DCD1}/GPIO15 | bidirectional |
| 29 | ~{DSR0}/GPIO14 | input |
| 30 | TXD0 | output |
| 31 | RXD0 | input |
| 32 | ~{RI0}/GPIO13 | bidirectional |
| 33 | ~{DCD0}/GPIO12 | bidirectional |
| 34 | ~{DTR3}/TNOW3/GPIO11 | bidirectional |
| 35 | GND | passive |
| 36 | VCC | power_in |
| 37 | TXD3 | output |
| 38 | RXD3 | input |
| 39 | ~{DTR0}/TNOW0/GPIO8 | bidirectional |
| 40 | ~{RTS0}/GPIO1 | bidirectional |
| 41 | ~{CTS0}/GPIO0 | bidirectional |
| 42 | UD- | bidirectional |
| 43 | UD+ | bidirectional |
| 44 | TEST | input |
| 45 | ~{RTS3}/GPIO7 | bidirectional |
| 46 | ~{CTS3}/GPIO6 | bidirectional |
| 47 | GND | passive |
| 48 | VCC | power_in |
Footprint
ConfirmedPackage_QFP/LQFP-48_7x7mm_P0.5mm
Pad Layout
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48
Pads (48)
| Number | Type |
|---|---|
| 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 |
| 26 | smd |
| 27 | smd |
| 28 | smd |
| 29 | smd |
| 30 | smd |
| 31 | smd |
| 32 | smd |
| 33 | smd |
| 34 | smd |
| 35 | smd |
| 36 | smd |
| 37 | smd |
| 38 | smd |
| 39 | smd |
| 40 | smd |
| 41 | smd |
| 42 | smd |
| 43 | smd |
| 44 | smd |
| 45 | smd |
| 46 | smd |
| 47 | smd |
| 48 | smd |