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CP2102 module USB to TTL USB to serial module UART STC Downloader Brush upgrade board


Tips ( very important ) :
TXD: the sender , usually expressed as its sender , the normal communication must be connected to another device RXD.
RXD: the receive side, generally expressed as the receiving end of their normal communication to another device connected to TXD.
When normal communication TXD never received their equipment RXD!
Collected spontaneously : normal communication other devices connected RXD TXD, so if you want to receive data sent their name suggests, it is their own transmitted data received , which is connected directly to its own TXD RXD, used to send and receive the test itself is normal, is the quickest and easiest way to test if a problem occurs first do the test to determine whether a product failure. Also known as the loopback test .
Level logic :
TTL level : typically binary data representation , provides +5 V equivalent to the logic \"1\", 0V is equivalent to logic \"0\" , is called a TTL signal system is the positive logic
RS232 level : the -12V to -3V, equivalent to logic \"0\", +3 V to +12 V logic level is equivalent to logic \"1\" , the negative logic
Product description :
1, the main chip CP2102, generate a virtual serial port after installing the driver
2, USB to take power , leads to the interface includes 3.3V(\u003c40mA),5V, GND, TX, RX, the signal pin level is 3.3V, positive logic
3 , onboard status indicator lights transceiver , install the correct drivers status indicator lit, when the communication transceiver indicator flashes , the higher the intensity , the lower the baud rate
4, support from 300bps ~ 1Mbps baud rate between
5, the communication format support: 1 ) 5,6,7,8 data bits ; 2 ) support 1.5, 2 stop bits ; 3) odd, even, mark, space, none parity
6 , support for the operating system : windows vista / xp / server 2003/200, Mac OS-X/OS-9, Linux
7, USB head for the male , can be directly connected to the computer USB port
8 , SMT chip components for the production process , quality and stability
9 , does not have USB head volume : (mm)
Buy this product includes the following accessories:
A welding test a good module