1. Magnetically isolated serial port
2. Optically isolated serial port
FT232RL magnetically isolated USB to TTL serial port (ie UART, COM port)
This page product model: MCS-88
MCS-88 is a magnetically isolated USB to TTL serial interface (ie UART/COM port), the main control uses FTDI USB chip FT232RL, designed by DBS original technology, with 1000V DC isolation voltage and reliable communication speed up to 1Mbps, USB The side and the TTL side are completely isolated, fully ensuring computer security and effectively reducing interference.
main feature
? FT232RL main control, the industry's excellent USB to serial port chip, stable choice for industrial applications.
? ADI's latest generation of magnetic isolation chip ADU3201, high speed, high waveform, power consumption is significantly lower than photoelectric isolation.
? On-board large-pitch isolated power supply, no external power supply, just plug in the USB interface.
? Increase the isolation gap and PCB slotting to better avoid creepage and improve safety performance.
? Integrated protection diodes for improved protection.
? USB-A male connector, no need to connect the cable, plug directly into the computer USB port to use.
? The communication level can be easily switched to 5V or 3.3V through the jumper cap.
? VCC can output voltage 5V or 3.3V, and the communication level and VCC can be the same or different.
? TX leads the TX-D (open-drain output) through the reverse diode, which is convenient for burning the STC microcontroller, avoiding the failure of the power-off and not completely burning.
? Onboard power supply, send and receive three LED indicators, observe the communication status at any time (dedicated IO drive, not connected in parallel on the signal line, does not affect communication).
typical application
? Isolated USB to TTL serial communication and debugging equipment under high voltage and dangerous conditions.
? Upgrade peripheral firmware such as routers and set-top boxes.
? Burn (download) microcontroller program
? High-speed USB UART communication (up to 2Mbps)
? Built into the product to improve communication reliability
Product Image
Module picture
Function module description
Pin function
? Level selection pin: used to select the signal and power VCC pin level, must be connected to one of 5V or 3.3V.
? TX/RX: Serial data pin (refers to the module's own TX. Data transmission/RX. Data reception, corresponding to RX/TX of external device.)
? GND: Power ground (GND must be connected, and must not be connected incorrectly, otherwise it may damage the device or serial port module)
The above is the pin that must be connected for normal communication.
?VCC: Power output (depending on whether the external equipment needs power supply to determine whether the connection is connected or not, the maximum current must not exceed 500mA)
? TX-D: TX through the reverse diode, that is, the TX signal of the open-drain output, can only output low level, and needs to be pulled high externally. When the STC microcontroller downloads the program, use TX-D instead of TX to connect to the P30 pin of the MCU.
prompt
? This module can support signal pin and power pin to switch to 5V/3.3V at the same time (using VCC for external power supply, signal pin and VCC level are the same), and can also support different levels of signal and power supply (using 5V or 3.3) The V pin is powered externally).
? When the factory test, the level defaults to 3.3V. The TX/RX is directly connected and can be removed when in use.
Precautions
? This is a 5V/3.3V TTL level serial port. Do not connect RS-232 level devices (+-5V to +-15V).
? The load of this module must not exceed 150mA, otherwise the module or computer USB has the risk of overload damage (communication only needs GND/TX/RX three lines). Wiring diagram
Test Methods
Take the STC-ISP test for self-receiving as an example under Windows. Other situations are similar:
1. The module is plugged into the computer and the blue power indicator lights up.
2. Install the driver and view the serial port number from the device manager.
3. The computer opens the serial port assistant and selects the corresponding serial port number.
4. Enter any content in the send area. Select the text mode.
5. Use the jumper cap to connect directly to TX and RX, that is, the data sent out directly returns, spontaneously received.
6. Receive area (select text mode) to see the returned content, indicating that the serial port module is working properly.
Product Size
Specifications
Material
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Origin
Mainland China