Mô đun cổng USB CP2102 chuyển đổi sang TTL STC Download UART

Cp2102 module USB TO TTL USB TO serial port module UART STC downloader

(A) general knowledge (very important):
Txd: the sender, generally expressed as its own sender, must receive the RXD of another device for normal communication.
Rxd: the receiver, generally referred to as its own receiver, must receive the TXD of another device for normal communication.
The TXD of the normal communication time itself is always connected to the RXD of the device!
Spontaneous self-collection: RXD receives TXD from other devices when normal communication occurs, so if you want to receive the data you send, by definition, that is, you receive the data you send, i.e. your TXD is directly connected to RXD, to test whether your sending and receiving is normal, it is a quick and simple test method, and do it first to determine whether the product fails.Also called loop test.

Level logic:
Ttl level: usually data represent binary, set+5V equivalent to logic "1" and 0V equivalent to logic "0," known as TTL signal system, is positive logic
Rs232 level: logic level using - 12V to - 3V, equivalent to logic "0, "+3V to+12V, equivalent to logic" 1, "is negative logic

Product description:
- the main chip is cp 2102, which is installled and driven to generate a virtual serial port
2, USB charge, lead interface includes 3.3V (< 40mA), 5V, GND, TX, RX, signal foot level 3.3V, positive logic
- board-mounted status indicator, receiving and receiving indicator, and properly installled driving status indicator will be always bright, receiving and sending indicator will flicker when communicating, and the higher the wave rate will be the lower
- support the wave rate from 300 bps to 1Mbps
- communication format support: 1) 5, 6, 7, 8 bits of data; 2) support 1, 1.5, 2 stops; 3) odd, event, mark, space, none checksum
- support operating systems: windows vista/xp/server 2003/200, Mac OS-X/OS-9, Linux
7. USB head is male and can be connected directly to computer USB port
- smd components are produced for SMT process and are stable in qu