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USB To Uart 5V/3V3

3 years ago 1538
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USB To Uart 5V/3V3 is a USB to serial adapter,Which is base on CH340,CH340 is a USB bus convert chip and it can realize USB convert to serial interface, USB convert to IrDA infrared or USB convert to printer interface. this module is compatible with 5V and 3v3.and it can used for upload code or communicating with MCUs.

Features Full speed USB device interface, conforms to USB Specification Version 2.0 3.3V and 5V compatible I/Os. Supports baud rate varies from 2400bps to 115200bps. Hardware full duplex serial interface, set transceiver buffer LED Indicator

Specification Working Voltage :DC 5V Working Current <10mA Operation System: Windows,Linux,Mac

Resource USB To Uart 5V/3V3 v1.0 Eagle File Schematic in pdf Datasheet of CH340

Documents Please visit our wiki page for more info about this product. It will be appreciated if you can help us improve the documents, add more demo code or tutorials. For technical support, please post your questions to ourforum.

For more detail, please visit:


USB To Uart_5V_3V3 v1


ID Name Designator Footprint Quantity
1 CH340T U1 SSOP20 1
3 12MHz X1 2P-SMD-5X3.2 1
4 6P-SMD-2CH-2.54-7.0*3.5*1.5 SW1 6P-SMD-2CH-2.54-3.5X7.2 1
5 XC6206P332MR-G U2 SOT23 1
6 10uF_25V C1,C2 C0805 2
7 100nF C3,C5 C0402 2
8 10nF C4 C0402 1
9 22pF C6,C8 C0402 2
10 S8550 Q1,Q2 SOT23 2
11 RED TX,RX LED-0603 2
12 1k R1,R2,R3,R4,R5 R0402 5
13 GREEN PWR LED-0603 1
14 CESD5V0AP D1,D2 SOT23 2
15 1X7P-2.54-2.54-6.0-90D-1 J3 7P-2.54-6535MIL 1


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