CP2102 module USB to TTL USB turning port module UART STC downloader

Small common sense (very important):
TXD: Send end, generally indicates that it is your own sending end. Normal communication must connect the RXD of another device.
RXD: The receiving end is generally expressed as its own receiving end. Normal communication must connect the TXD of another device.
When communicating normally, the TXD will always connect the RXD of the device!
Self -receiving spontaneous: When normal communication, RXD connects the TXD of other devices, so if you want to receive the data sent by yourself, as the name implies, that is, you receive your own data, that is, your own TXD is directly connected to the RXD, which is used to test the sending and receiving itselfWhether it is normal is the fastest and simplest test method. When a problem occurs, first do the test to determine whether the product is faulty.Also known as the ring test.

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

Product Description:
1. The main chip is CP2102, and the virtual serial port is generated after installation
2. USB Electricity, the leading interface includes 3.3V (5V, GND, TX, RX, signal foot level is 3.3V, positive logic
3. Endorphy state indicator, receiving and receiving indicator, the state indicator light after the driver is correctly installed, the sending and receiving indicator will flash when communicating. The higher the baud rate, the lower the brightness.
4. Support the baud rate between 300bps ~ 1Mbps
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: Windows Vista/XP/Server 2003/200, Mac OS-X/OS-9, Linux
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
9. No USB head volume is: (mm)

Note: You can use STC-ISPV3.94 above versions to download the old version of STC89C (Le) and STC12C (Le) series with STC-ISPV3.94 or above.You can download when the rate setting is the same. We do not guarantee this, please consider it by yourself) (STC-sp download address: http://www.mcu-memory.com/datasheet/stc-sp- v4.83/stc-ISP-V4.83-NOT-SETUP-Chinese.exe, just decompress it after downloading) Please see clearly, this is not a driver!

Download the STC single -chip machine step: TXD receives the RXD of the single -chip microcomputer, RXD connects the TXD of the single -chip microcomputer, GND connected to GND, 5V connected to VCC, downloaded it on the software, and then insert the four feet mentioned above to the single -chip machine.(Note: The single -chip microcomputer must have the most basic working conditions, including power, reset and clock! At the same time, the single -chip microcomputer's TXD, RXD should not connect other peripheral devices, including MAX232Do not disconnect the connection between the module and the computer!))

Note: This product only allows your computer to have one more serial port, which can communicate with various serial port devices such as GPS, satellite receiver, hard disk, Bluetooth module and other communication.However, the owner's ability and time are limited, and it is impossible to know the use of each device. Therefore, the use of various equipment (such as brushing hard disk firmware, receiving machine firmware upgrades and other value -added services) is not a after -sales service scope of this product. Please check what you use.The instructions of the product are not accepting the evaluation because of this, please look at it again, thank you!

Common problems:

Q: Why is the USB conversion port not using DB9 seats like a PC?

A: The serial port of the PC is DB9, the level is ± 12V, and it is negative. If you want to receive the serial port of MCUs such as a single chip machine, you need to add a serial port conversion circuit such as MAX232 to obtain the level signal compatible with the MCU.And the USB transitional port is already a 3.3V level signal, which can directly connect 5V or 3.3V single -chip microcomputer.You only need TXD, RXD, GND during communication.Therefore, the USB serial port can directly receive the MCU's serial port without using conversion circuits such as MAX232, which is more convenient to use.

Q: Does the product need to install the driver?
A: You need to drive, the description has provided the driver of each system, please download it by yourself

Q: Do you provide a schematic or PCB diagram?
A: Sorry, no schematic and PCB diagrams are not provided.

Q: Can I brush the hard disk/satellite receiver?
A: This product allows your computer to have one more serial port, and it is the serial port of the TTL level. As for what purpose you use this serial port, because there are many serial port devices, our store cannot provide the corresponding after -sales service, and it is not guaranteed to be able to use it.For this purpose.If you receive the first thing to receive your baby, please test the self -receiving and spontaneous adoption.

Q: How to connect the single -chip machine?
A: We have given a description of a single -chip microcomputer, please take a closer look.

CP2102 Introduction:

Single -chip usb UART data converter
-The integrated USB transceiver does not require external resistance
-The integrated clock no external oscillator requires
-The integrated 512 byte EEPROM is used to provide storage space for the supplier code product code sequence number of the power sign number and product description.
-The electrical reset circuit in the chip-the voltage regulator in the chip 3.3V output USB function controller
-The USB specification 2.0 full speed (12 Mbps)
-Stit the USB supported by Suspend and RI pin
Asynchronous serial data bus (UART)
-All handshake and modem interface signals
-Data format support:
Data bit 8
Stop bit 1, 2
Checking position: Strange verification, even verification, no verification
-Poter rate 300bps to 921.6kbps
-512 byte receiving buffer 512 byte send buffer
-Poys hardware or X-ON/X-OFF handshake
-Chisure event status and line stop conditions
Practical COM Oral Device Driver Device
-It can be used with the existing COM port PC application
-The issuance permit for free copyright
-Windows 98/ME/2000/XP
-Mac OS-9
-Mac OS
-X-Windows CE
-Linux 2.40 or higher version
Application example
RS-232 traditional device to USB upgrade
-Mato mobile USB interface cable
-PDA USB interface cable
-USB to RS-232 serial adapter
Power supply voltage
-On self -power supply: 3.0V to 3.6V
-USB bus power supply: 4.0V to 5.25V
Encapsulate
-28 pin MLP (5mm * 5mm)