CP2102N-A01-GQFN28

Controllers Overview

The CP2102N-A01-GQFN28 is a single-chip USB-to-UART bridge controller from the Silicon Labs USBXpress family. It integrates a USB 2.0 full-speed function controller, transceiver, oscillator, and UART within a QFN28 package. The device supports data transfer rates up to 3 Mbaud with operating currents of 9.5 mA during normal operation and 195 µA in suspend mode. It operates on a supply voltage range of 3.0 V to 3.6 V on VDD and includes an internal 5 V-to-3.3 V regulator for self-powered applications.

Controllers Feature Summary

• Eliminates firmware development requirements through integrated USB-to-UART bridging capabilities
• Includes an internal 48 MHz 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 operating systems

Controllers Applications

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

Controllers Procurement Notes

Verify the specific ordering suffix against official documentation to confirm package type and temperature grade. Ensure compatibility with the target application's power supply configuration, particularly regarding the use of the internal voltage regulator versus external sourcing. Confirm that the selected variant meets all required regulatory standards for the intended deployment environment.

Controllers Selection Notes

Select this component when a compact solution is needed to interface legacy RS-232 designs with modern USB hosts without custom firmware. The QFN28 package offers seven digital I/O pins for additional control functions. Consider the low operating current and small footprint benefits for battery-powered or space-constrained embedded systems requiring reliable serial communication.

Controllers Part Context

This part belongs to the CP2102N series, which expands upon the classic CP2102 architecture by adding features such as battery charger detection and configurable GPIOs. The A01 designation indicates a specific hardware and firmware revision within the USBXpress product line, ensuring backward compatibility with standard Virtual COM Port implementations while offering enhanced configuration flexibility via the Xpress configurator tool.

Controllers Replacement Considerations

The CP2102N-A02-GQFN28 serves as a direct functional replacement within the same package, differing primarily in configuration memory options. For pin-compatible alternatives in smaller footprints, consider the CP2102N-GQFN24 or CP2102N-GQFN20 variants, noting the reduction in available digital I/O pins.