CP2102/CH340 module USB to TTL USB to serial port module UART STC downloader flashing

Link: https://pan.baidu.com/s/16uf9bsh3uvp0dhcg0jjvca

Extract code: 1234

Product Description:

1. The main chip is CP2102, and the virtual serial port is generated after installation

2. USB electricity pickup, the leading interface includes 3.3V (
3. Endorphy state indicator, receiving and receiving indicator, correctly installed the driven state indicator will often be on, 3. The sending and receiving indicator will flashes when communicating.

4. Support the baud rate between 300bps ~ 1Mbps 4.

5. Communication format support: 1) 5,6,7,8 digits; 2) support 1,1.5,2 stop bits; 3) ODD, EVEN, Mark, Space, None verification

6. Support operating system: Win XP/Win7/Win10, Mac OS-X/0S-9, Linux and other operating systems

7. The USB head is the male head, you can directly connect to the computer USB port

8. Patch component is produced by SMT process, and the quality is stable

Small common sense (very important): sending end, generally indicates that the sending end TXD:, normal communication must be connected to the RXDRXD: receiving end of another device, which generally indicates that it is the receiver of your own.When normal communication, the TXD will always pick up the RXD of the device! From receiving white hair: RXD connects the TXD of other devices during normal communication. ThereforeIt is the fastest and simplest test method to test it directly to the RXD to test itself. When a problem occurs, the test is determined to determine whether the product fails.Also known as the ring test.

Level logic:

TTL level: Generally data indicates binary, specifies that+5V equivalent to the logic "1" 0V equivalent to logic "0" is called the TTL signal system, which is positive logic RS232 level: use -12V to -3VLogic "0",+3V to+12V logic level, equivalent to logic "1", is negative logic