Product description
Optimised circuitry for communication rates up to 12Mbps
On-board DC5V power supply interface, 500MA current output, improve load capacity.
On-board EROM, can be configured to JRAG/SPI and other interface forms through FTPROG software.
All available I0 are exported.
Each serial port has an independent transceiver indicator LED, easy to observe the serial port status
Four serial ports are connected at the same time, you can observe the data at the same time
Supply Voltage: Power(5.0V)
Operating Temperature:-40-85 degree Celsius
This is a 5V/3.3VTTL level port, please do not connect RS-232 level devices (+-5V to +-15V).
This module USB power supply with load shall not exceed 500mA, otherwise the module or computer USB overload risk of damage (communication only GND/TX/RX three wires)
RXD: module comes with the port of the receiving pin (TTL level, can not be directly connected to the RS232 level!)
Can be connected to the microcontroller TXD
TXD: Receive pin of the module's own port (TTL level, can't directly connect to RS232 level!)
Can be connected to the RXD of the microcontroller
Normal communication must be connected to the pin.
1.USB port: connect to computer or host, must be connected. Toggle the power selector switch to the V-USB
side to get power from USB.
2. TXA/B/C/D: Serial data transmission pins (refers to the module's own data outflow →, corresponding to the external device's RX. data reception.)
3, RXA/B/C/D: serial port data receiving pin (refers to the module's own data input ←, corresponds to the external device's TX. data transmission.)
4, GND: power ground (GND must be connected, can not be connected incorrectly, or may damage the device or serial module)
The following pins are not necessary for communication, you can decide whether to connect according to their needs
1, 10 pins on both sides: including CTS/RTS/DCD/RI/DSR and other flow control pins and 5V/3.3V power supply pins out of the serial port, generally do not use, according to their own situation to decide whether to connect the need.
2. Due to electrical characteristics, both sides of the 10 RX pin can not be used for communication, only for measuring signals. For communication, please use the RX on the white XH2.54 terminal, other I0 can be used normally.
3. When tested at the factory, TX/RX is directly connected and can be removed during use.