CP2102 module USB TO TTL USB to serial module UART STC downloader comes with 5 DuPont cables

This downloader supports 3.3V and 5V STC full series microcontroller burning
Equipped 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 communication debugging!
The highest baud rate of 115200 is perfectly supported! Don't worry about burning the STC12 series, STC11 series, and STC15 series anymore!
Pin Description:
G: Ground wire (GND) connected to the GND of STC microcontroller
O: Power supply (OUT VCC) connected to VCC of STC microcontroller
R: Receive (RXD) P3.1 connected to STC microcontroller
T: Send (TXD) P3.0 connected to STC microcontroller
CP2102 module USB to TTL USB to serial port module UART STC downloader flashing upgrade board
Download address for driver information: http://www.xhl.com.cn/CN/ProductShow/Search.aspx?cont=CP210x
Common sense (very important):
TXD: The sender, usually referred to as its own sender, must connect to another device's RXD for normal communication.
RXD: The receiving end, usually represented as its own receiving end, must be connected to another device's TXD for normal communication.
During normal communication, the TXD itself is always connected to the RXD of the device!
Self collection spontaneous: During normal communication, the RXD is connected to the TXD of other devices. Therefore, if you want to receive the data you send, as the name suggests, it means that you receive the data you send yourself. That is, your own TXD is directly connected to the RXD to test whether your transmission and reception are normal. This is the fastest and simplest testing method. When a problem occurs, the first step is to do this test to determine whether the product is faulty. Also known as loop back testing.
Level logic:
TTL level: Usually, data representation is in binary format, where+5V is equivalent to logic "1" and 0V is equivalent to logic "0". It is called a TTL signal system and is a positive logic
RS232 level: using -12V to -3V, equivalent to logic "0",+3V to+12V logic level, equivalent to logic "1", is negative logic
Product Description:
1. The main chip is CP2102, which generates a virtual serial port after installing the driver
2. USB power on, output interface includes 3.3V (<40mA), 5V, GND, TX, RX, signal pin level is 3.3V, positive logic
3. The onboard status indicator light and transceiver indicator light will remain on when the driver is correctly installed. The transceiver indicator light will flash during communication, and the higher the baud rate, the lower the brightness
4. Supports baud rates from 300bps to 1Mbps
5. Communication format support: 1) 5, 6, 7, and 8 data bits; 2) Supports stops of 1, 1.5, and 2; 3) OD, even, mark, spa