CP2102 USB to TTL UART Serial Convertor Module

The CP2102 Module is a compact and versatile USB to UART bridge module that facilitates communication between a computer's USB port and UART devices, such as microcontrollers, sensors, and other electronics. The CP2102 provides a convenient and straightforward way to interface with devices that use UART (Universal Asynchronous Receiver-Transmitter) communication.

This converter supports many Operating Systems such as Windows, Windows server, Mac OS-X/OS-9, and Linux.

Specifications of CP2102 USB to TTL UART Serial Convertor Module:

• Supporting various OS: Windows (XP to 10, both 32&64 bit), Mac OS 9/X, Linux, Android
• Chip: CP2102 USB to UART bridge chip
• USB Compatibility: USB 2.0 Full-Speed (12 Mbps) support
• UART Communication: Provides TX and RX pins for UART communication
• Voltage Levels: supports both 3.3V and 5V logic levels
• Baud Rate: 300bps ~1Mbps
• Working temperature: -40°C ~ 85°C.
• Dimensions:45mm x 14mm

Features of CP2102 USB to TTL UART Serial Convertor Module:

• USB 2.0 Interface: The CP2102 typically supports USB 2.0, providing a fast and reliable connection.
• On-Chip Voltage Regulator: The chip includes an on-chip voltage regulator, allowing it to operate at different supply voltage levels.

Pinout of CP2102 USB to TTL UART Serial Convertor Module

• 5V: Power supply voltage.
• GND: Ground connection.
• RXD: Receive Data. This is the UART receive pin, and it receives data from the connected device.
• TXD: Transmit Data. This is the UART transmit pin, and it sends data from the CP2102 to the connected device.
• 3V3 (or 3.3V): Output from the on-chip voltage regulator, providing a 3.3V supply. This pin can be used to power external devices that require a 3.3V supply.

Common Applications of CP2102 USB to TTL UART Serial Convertor Module

• Programming Microcontrollers: The CP2102 is often used for programming and debugging microcontrollers that use UART communication.
• Serial Communication: It can be employed for general-purpose serial communication between a computer and embedded systems.

In order to connect this module to other devices (such as microcontrolles) you need Jumper wire (female to female or female to male).

How do I install drivers for the CP2102 on my computer?

Windows:

• Download the latest CP210x USB to UART Bridge VCP Drivers from the Silicon Labs website.
• Run the installer executable and follow the on-screen instructions.
• Reboot your computer if prompted.
• Verify Installation: Open the Device Manager on your computer.Look for the CP2102 device under the "Ports (COM & LPT)" section.

Mac OS X:

• Plug the CP2102 module into a USB port on your Mac.
• Automatic Driver Installation: Mac OS X often includes built-in drivers for the CP2102, and no additional installation is required.
• Verify Installation: Open the "Applications" folder and go to "Utilities" > "Terminal."
• Run the command ls /dev/cu.* to list available serial ports.
• Look for a device with a name similar to /dev/cu.SLAB_USBtoUART.

Linux:

• Plug the CP2102 module into a USB port on your Linux machine.
• Automatic Driver Installation (kernel-based): Many Linux distributions include the CP210x driver in the kernel. In most cases, the driver will be loaded automatically when you connect the CP2102.
• Manual Installation (if needed): If the driver is not automatically loaded, you may need to install it manually. Run the following command in the terminal:

sudo modprobe cp210x

• Verify Installation: Run the command “dmesg | grep tty” to list available serial ports. Look for a device with a name similar to”/dev/ttyUSB0” or “/dev/ttyS0”.

Can I power my microcontroller using the 3.3V output from the CP2102?

No, you can’t power your microcontroller using the 3.3V output from the CP2102. You can use 5V output of module instead to do this or use some external power supply module.

What is TTL voltage level of CP2102?

A TTL input signal is defined as "low" when between 0 V and 0.8 V with respect to the ground terminal, and "high" when between 2 V and VCC (5 V).

If a voltage signal ranging between 0.8 V and 2.0 V is sent into the input of a TTL gate, there is no certain response from the gate and therefore it is considered "uncertain".