USB To TTL CP2102 Converter

Descriptions :

The CP2102 TTL module is a USB to UART (Universal Asynchronous Receiver-Transmitter) bridge controller. It uses the CP2102 integrated circuit (IC) from Silicon Labs to provide a convenient way to interface microcontrollers or other UART-enabled devices with a computer through a USB connection. The module is widely used for programming and communication with devices that have UART interfaces. Here are some key features and information about the CP2102 TTL module:

Key Features :

 1. USB to UART Conversion:  The CP2102 TTL module converts USB signals to UART signals, allowing devices without native USB support to communicate with a computer.

 2. CP2102 IC: The module is built around the CP2102 IC, which is a single-chip USB-to-UART bridge that includes USB 2.0 full-speed controller, voltage regulator, and a UART interface.

 3. TTL Levels: The module typically operates with TTL-level UART signals (3.3V or 5V), making it compatible with a wide range of microcontrollers.

 4. Onboard Components: The module often includes additional components such as a crystal oscillator, USB connector, and voltage regulator.

 5. 3.3V and 5V Operation: Some CP2102 modules allow the selection of the operating voltage (3.3V or 5V) through jumper settings.

 6. TX and RX LEDs: Many CP2102 modules include onboard LEDs that indicate the transmit (TX) and receive (RX) activities.

Pin Configuration :

The CP2102 TTL module typically has the following pin configuration:

1. 3V3 (3.3V): Power supply output (optional, depending on jumper settings).
2. 5V: Power supply output (optional, depending on jumper settings).
3. GND (Ground): Ground reference.
4. TXD (Transmit Data): Transmit data (connects to the RX pin of the microcontroller).
5. RXD (Receive Data): Receive data (connects to the TX pin of the microcontroller).
6. DTR (Data Terminal Ready): Optional pin for hardware flow control (not always used).
7. RTS (Ready To Send): Optional pin for hardware flow control (not always used).
8. GND (Ground): Ground reference.

Jumper Settings :

Some CP2102 modules have jumper settings that allow you to configure the operating voltage (3.3V or 5V) and other options. Common jumper configurations include:

• VCC or 3V3 (Jumper): Selects the operating voltage (3.3V).
• VCC or 5V (Jumper): Selects the operating voltage (5V).
• TXD and RXD LEDs (Jumper): Enables or disables the onboard LEDs.

Wiring Example :

Here's a basic wiring example for connecting the CP2102 TTL module to a microcontroller:

Technical Specifications:

Package Included:

• 1 x USB To TTL CP2102 Converter