This USB to TTL adapter is based on the CP2102 USB to TTL serial converter IC. It is commonly used when microcontrollers like Arduino, Raspberry Pi, PIC etc have to communicate with computers through serial communication. As USB has DATA lines D+ and D- that can be connected and routed by CMOS switches. The USB can be connected to many peripheral devices and has a very fast speed of data transfer also it is used with Windows, Mac or any other operating system. On the other hand, Arduino and other microcontrollers works on UART data transfer protocol i.e. TTL logic level data transfer protocol it only works on 0V or 5V logic levels. That is why we need a USB to TTL serial converter IC so that Arduino or any other controller which work on UART protocol can be connected to the computer. It can also be used to program and or communicate with a GPS/GSM module through AT commands. The module supports both 3.3V and 5V interface.
Features:
- Stable and reliable chipset CP2102.
- USB specification 2.0 compliant with full-speed 12 Mbps.
- Standard USB type A male and TTL 5 pin connector.
- 5 pins for 3.3V, RST, TXD, RXD, GND & 5V.
- Baud rates: 300 bps to 1.5 Mbps
- Byte receive buffer; 640 byte transmit buffer.
- Hardware or X-On/X-Off handshaking supported.
- Event character support Line break transmission.
- USB suspend states supported via SUSPEND pins.
- Temperature Range: -40 to +85.
- Size: 42 mm X 15 mm.
Pinouts:
- TX = Connect to Transmit Pin(TXD) of Micro controller. This pin is RX pin of CP2102 on board.
- RX = Connect to Receive Pin(RXD) of Micro controller. This pin is TX pin of CP2102 on board.
- GND = Should be common to microcontroller ground.
- 3V3 = Optional output to power external circuit upto 50mA.
- 5V = Optional output to power external circuit upto 100mA
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