CP2102N-A02-GQFN28R

Controllers Overview

The CP2102N-A02-GQFN28R is a USB-to-UART bridge controller from the Silicon Labs USBXpress family, housed in a QFN-28 package. It integrates a USB 2.0 full-speed function controller, transceiver, oscillator, and UART interface within a 5x5 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 7 digital I/O pins. The component features an internal 960-byte programmable ROM for configuration strings and supports USB Battery Charger Detection per the USB BCS 1.2 specification.

Controllers Feature Summary

• Eliminates firmware complexity by integrating all necessary USB components, including the transceiver and clock, without requiring external crystals or resistors.
• Provides royalty-free Virtual COM Port drivers compatible with Windows, Mac, and Linux operating systems.
• Supports USB Battery Charger Detection (USB BCS 1.2) and remote wakeup functionality for suspended hosts.
• Includes a simple GUI-based configurator for customizing vendor IDs, product descriptions, and GPIO settings.

Controllers Applications

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

Controllers Procurement Notes

Verify that the ordering suffix 'R' corresponds to the tape and reel packaging format as specified in the datasheet. Confirm the temperature grade 'G' indicates operation within the -40 °C to +85 °C range. Ensure the specific hardware revision matches the design requirements, as pin indicators may vary between variants while maintaining the same landing diagram.

Controllers Selection Notes

Select this part when a compact solution is required to replace RS-232 designs with USB connectivity. The QFN28 package provides seven digital I/O pins, which is higher than the QFN20 or QFN24 options. Verify that the application requires battery charger detection capabilities, as this feature is exclusive to the QFN28 variant within the CP2102N series.

Controllers Part Context

This component belongs to the CP2102N series, designed to simplify USB integration by removing the need for complex firmware development. It serves as a direct upgrade path for legacy RS-232 interfaces, offering a highly integrated solution that minimizes PCB space and component count compared to traditional discrete USB controller implementations.

Controllers Replacement Considerations

Pin-compatible alternatives include the CP2102N-GQFN28 and CP2102N-A02-GQFN28. Note that the CP2101/2/9 devices are pin-compatible in the QFN28 package but lack the advanced features of the CP2102N series.

Controllers FAQ

Does the CP2102N require an external crystal?

No, the device includes an integrated internal oscillator, eliminating the need for an external crystal.

What is the maximum data transfer rate supported?

The device supports data transfer rates up to 3 Mbaud.

How many digital I/O pins are available in the QFN28 package?

The QFN28 package includes 7 digital I/O pins.