CP2102N-A01-GQFN20

Controllers Overview

The CP2102N-A01-GQFN20 is a USB-to-UART bridge controller from the Silicon Labs USBXpress family, housed in a 20-pin QFN package. It integrates a USB 2.0 full-speed function controller, transceiver, oscillator, and UART interface within a 3 mm x 3 mm footprint. The device operates on a single supply voltage ranging from 3.0 V to 3.6 V with a typical operating current of 9.5 mA at 115200 baud. It supports data transfer rates up to 3 Mbaud and includes 4 GPIO pins. Configuration memory provides 960 bytes for programmable strings.

Controllers Feature Summary

• Eliminates firmware development requirements through integrated USB-to-UART bridging capabilities
• Includes an internal oscillator and USB transceiver, removing the need for external crystals or resistors
• Supports USB Battery Charger Detection compliant with the USB BCS 1.2 specification
• Provides royalty-free Virtual COM port drivers compatible with Windows, Mac, and Linux systems

Controllers Applications

• Point-of-sale (POS) terminals
• USB dongles
• Gaming controllers
• Medical equipment
• Data loggers

Controllers Procurement Notes

Verify the specific hardware revision suffix against the manufacturer's ordering guide to ensure compatibility with required configuration parameters. Confirm that the QFN20 package dimensions align with the target PCB land pattern design. Check for any recent product change notices regarding pin indicators or marking updates before finalizing procurement specifications.

Controllers Selection Notes

Select this component when a compact solution is needed to upgrade RS-232 designs to USB without complex firmware development. Ensure the application requires only four general-purpose input/output pins, as larger packages offer more GPIO options. Verify that the power budget accommodates the specified operating current and that the host system supports USB 2.0 full-speed enumeration.

Controllers Part Context

This part belongs to the CP2102N series, which expands upon previous CP210x generations by integrating additional features into smaller packages. The QFN20 variant specifically targets space-constrained applications where fewer GPIO connections are sufficient. It maintains pin compatibility considerations with other members of the USBXpress family while offering distinct electrical characteristics suited for low-power operation.

Controllers Replacement Considerations

The CP2102N-A02-GQFN20 serves as a direct functional replacement within the same package type. Verify that the A02 firmware revision meets all application-specific configuration requirements previously handled by the A01 version.