CP2102N-A01-GQFN28R

Controllers Overview

The CP2102N-A01-GQFN28R is a USB-to-UART bridge controller from the Silicon Labs USBXpress family, housed in a QFN28 package. It integrates a USB 2.0 full-speed function controller, transceiver, oscillator, and UART within a 5x5 mm footprint. The device supports data transfer rates up to 3 Mbaud with operating currents of 9.5 mA at 115200 baud and 13.7 mA at 3 Mbaud. It operates on a single supply voltage ranging from 3.0 V to 3.6 V on VDD and includes an internal 5 V regulator accepting inputs up to 5.25 V. The component features 7 GPIO pins, USB Battery Charger Detection compliant with USB BCS 1.2, and remote wakeup capabilities.

Controllers Feature Summary

• Eliminates firmware complexity by providing a highly integrated solution for adding USB connectivity to applications without external components.
• Includes an internal 960-byte programmable ROM for storing vendor ID, product ID, serial number, and other configuration strings.
• Supports hardware handshaking via RTS/CTS and DSR/DTR signals, as well as software Xon/Xoff flow control.
• Features a simple GUI-based configurator for customization and offers royalty-free Virtual COM port drivers.

Controllers Applications

• POS terminals
• USB dongles
• Gaming controllers
• Medical equipment
• Data loggers

Controllers Procurement Notes

Verify the specific ordering suffix against the manufacturer's current datasheet revision to confirm pinout compatibility and feature set. Ensure that the A01 firmware revision meets the application requirements, as different revisions may have distinct configuration memory behaviors or errata. Cross-reference the QFN28 package dimensions with PCB land pattern specifications during design validation.

Controllers Selection Notes

Select this model when seven digital I/O pins are required alongside USB-to-UART bridging functionality. The QFN28 package provides dedicated pins for battery charger detection and remote wakeup, which are absent in smaller packages. Confirm that the system design accommodates the 5x5 mm footprint and thermal dissipation characteristics associated with the exposed pad in this package type.

Controllers Part Context

This component belongs to the CP2102N series, designed as a drop-in replacement for legacy RS-232 designs. It shares pin compatibility with the CP2101, CP2102, and CP2109 devices in the QFN28 form factor. The device simplifies development by removing the need for complex USB stack implementation, allowing engineers to focus on application logic rather than protocol handling.

Controllers Replacement Considerations

CP2102N-A02-GQFN28R