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SKU: 00212-1#4
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1PCS CP2102-USB To TTL-USB To Serial Port Module UART STC Downloader With 5 DuPont Lines

TEJIATE/特加特
In stock
¥2.10
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Product characteristics

This downloader supports 3.3V and 5V STC series single chip microcomputer burning

With USB to TTL and USB to serial port functions, it can be used for upgrading USB to TTL electronic products without affecting normal serial port communication debugging!

High baud rate 115200 support! No need to worry about STC12 series stc11 series and stc15 series burning!
CP2102-USB To TTL-USB To Serial Port Module UART STC Downloader With 5 DuPont Lines
 
Product advantage
 
TXD: the sender, which is generally represented as its own sender. Normal communication must be connected to the RXD of another device.
RXD: the receiver, which is generally represented as its own receiver. Normal communication must be connected to the TXD of another device.
In normal communication, TXD is always connected to RXD of the device!
Spontaneous self receiving: RXD is connected to TXD of other devices during normal communication, so if you want to receive the data sent by yourself, as the name implies, that is, you want to receive the data sent by yourself, that is, your TXD is directly connected to RXD, which is used to test whether your sending and receiving are normal. It is a test method of quick list. When there is a problem, you should first do this test to determine whether the product is faulty. Also called loop back test. 
 
Chip description
 
1. The main chip is CP2102, and the virtual serial port is generated after the driver is installed
2. USB power on, outgoing interface includes 3.3V (< 40mA), 5V, gndtx, Rx, signal pin level is 3.3V, positive logic
3. On board status indicator light and transceiver indicator light, the status indicator light will be on after the driver is installed correctly, the transceiver indicator light will flash when communicating, and the higher the baud rate, the lower the brightness
4. Support baud rate between 300bps1mbps
5. Communication format support: 1) 5,6,7,8-bit data bits; 2) 1,1.5,2-stop bits; 3) odd even, mark, space, none verification
6. Support operating system: Windows Vista / XP / Server 2003 / 200mac0s-x / OS-9 Linux supports W10
7. USB head is male, which can be directly connected to the USB port of the computer. 8. SMT technology is used to produce chip components, with stable quality
 
Level logic
 
TTL level: generally, binary is used for data representation. It is specified that + 5V is equivalent to logic '1,0v is equivalent to logic 0, which is called TTL signal system. It is positive logic RS232 level. It is - 12V to - 3V, which is equivalent to logic 0, + 3V to + 12V, which is equivalent to logic "1", which is negative logic
 
Pin description
 
G: Ground wire (GND) connected to GND of STC single chip microcomputer
0: power supply (out VCC) connected to VCC of STC single chip microcomputer
R: RXD connected to P3.1 of STC MCU
T: Transmit (TXD) to P3.0 of STC MCU
 
 
 

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