【High Compatibility & Universal Use】 Supports USB 2.0 full speed (12Mbps); 3.3V/5V dual-level output; compatible with for Arduino, for Raspberry Pi, STM32; no external power required
【Robust Communication Stability】 Built-in 512-byte double buffer; supports UART asynchronous communication; 300bps to 1Mbps baud rate; error-checking options available
【Wide Operating Range & Protection Features】 Operates from -40°C to +85°C; ±2kV ESD protection; 500mA self-healing fuse; IP54 dust-proof design for reliable performance in harsh Settings
【Low Power Consumption & Efficient Operation】 Typical operating current 20mA; 150µA sleep mode; 5V DC input via USB bus; suitable for low-power embedded systems and microcontroller projects
【Easy Setup & Reliable Integration】 Plug-and-play with Windows, Linux, Mac; VCP driver required; DTR/RTS flow control support; not for high-voltage (>5V) systems to prevent damage

Power System:

Input Voltage: 5V DC (USB bus-powered, compliant with USB 2.0 specification)

Logic Level Output: 3.3V TTL (compatible with 5V TTL input)

Communication Protocol:

Interface: UART asynchronous serial communication

Baud Rate: 300bps–1Mbps (custom rates supported)

Data Format:

Data Bits: 5/6/7/8 bits

Stop Bits: 1/1.5/2 bits

Parity: Odd/Even/None (configurable via driver)

Buffer Capacity: 512-byte receive & transmit buffers

Protection & Reliability:

ESD Protection: ±2kV (HBM standard)

Short-Circuit Protection: 500mA self-recovery fuse

Operating Temperature: -40°C to +85°C (Reliable)

Dimensions: 16mm × 20mm (Micro USB interface version)

🔌 Pinout Configuration

VCC: 5V power output (max 100mA load) for target device power supply.

GND: Common ground (ensure impedance ≤0.1Ω with target system).

TXD: Serial data transmit (3.3V TTL), connect to target RXD.

RXD: Serial data receive (tolerates 5V TTL), connect to target TXD.

DTR: Data Terminal Ready (open-drain output, requires 10kΩ pull-up for for Arduino Pro Mini auto-reset).

RTS: Request to Send (flow control signal), connect to target CTS.

3V3: 3.3V auxiliary output (max 40mA) for low-power sensors.

❓ FAQ

Q1: Driver installation fails on Windows?

Solution: Enable "Device Install Service" via services.mscor disable driver signature enforcement (F8 during reboot).

Q2: TXD/RXD lights on but no communication?

Solution: Ensure cross-connection (TXD→target RXD, RXD→target TXD). Avoid simultaneous use with level shifters like MAX232.

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