Product Parameter
1. Fully supports Windows 11, Windows 10 32-bit and 64-bit systems. The drivers fully support embedded applications. The serial port is a widely used communication peripheral in applications, but embedded engineers inevitably get confused by the various levels, standards, and voltages of the serial ports. Due to historical reasons, there emerged TTL-level ports, RS232-level interfaces, and RS485-level interfaces. Each interface has its own characteristics, and the preferred interface for devices also varies.
2. Chip Description:
• The main chip is CP2102. After installing the driver, a virtual serial port is generated.
• USB powers the device. The interface leads include 3.3V (< 40MA), 5V, GND, TX, R. The signal level of the pins is 3.3V, with positive logic.
• The board has built-in status indicator and transmit/receive indicator lights. After correctly installing the driver, the status indicator light will remain on, and the transmit/receive indicator light will flash during communication. The higher the baud rate, the lower the brightness.
• It supports baud rates ranging from 300 BPS to 1 MBBPS.
• Communication formats supported:
(1) 5, 6, 7, 8 data bits;
(2) Supports 1, 1.5, 2 stop bits;
(3) 0DD, EVEN, MARK, SPACE, NONE parity.
• It supports operating systems: WINDOWS Vista/XP/Server 2003/200, MAC 6.os-X/OS 9, LINUX.
• The USB connector is a male connector, and it can be directly connected to the USB port of the computer. The soldering components are produced by SMT technology, ensuring stable quality.
3. Logic Levels:
TTL logic level: Usually, data representation uses binary. +5V is equivalent to logic "1", and OV is equivalent to logic "0", known as the TTL signal system, which is positive logic. RS232 negative logic: Uses 12V to -3V, equivalent to logic "0", +3V to +12V logic level, equivalent to logic "1", which is negative logic.
4. Pin Description:
G: Ground (GND) Connect to the GND of the STC microcontroller
0: Power (OUTVCC) Connect to the VCC of the STC microcontroller
R: Receive (RXD) Connect to P3.1 of the STC microcontroller
T: Transmit (TXD) Connect to P3.0 of the STC microcontroller