CP2102N-A02-GQFN24

Controllers Overview

The CP2102N-A02-GQFN24 is a USB-to-UART bridge controller from the Silicon Labs USBXpress family, housed in a 24-pin QFN package. It integrates a USB 2.0 full-speed function controller, transceiver, oscillator, and UART within a single chip. 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 power supply ranging from 3.0 V to 3.6 V or 3.0 V to 5.25 V via an internal regulator. The component includes 512-byte receive and transmit buffers, 960 bytes of programmable configuration memory, and four GPIO pins.

Controllers Feature Summary

• Eliminates firmware complexity by integrating all necessary USB components, including the transceiver and clock, without requiring external resistors or crystals.
• Provides royalty-free Virtual COM Port drivers compatible with Windows, Mac, and Linux operating systems for immediate plug-and-play functionality.
• Supports comprehensive UART handshaking protocols, including hardware RTS/CTS, DSR/DTR, and software Xon/Xoff methods.

Controllers Applications

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

Controllers Procurement Notes

Verify the specific ordering suffix GQFN24 to confirm the 24-pin QFN package type and pinout compatibility. Ensure the A02 revision matches the required firmware and hardware specifications. Confirm that the intended application environment falls within the -40°C to +85°C temperature grade range specified for this variant.

Controllers Selection Notes

Select this model when a compact 4x4 mm footprint is required alongside four available GPIO pins. Unlike the QFN28 variant, this version lacks battery charger detection capabilities. It serves as a direct pin-compatible replacement for the CP2104 in designs requiring fewer general-purpose I/O lines while maintaining USB 2.0 full-speed connectivity.

Controllers Part Context

This component belongs to the CP2102N series, which succeeds the classic CP2102 line by offering reduced development effort through integrated configuration tools. The QFN24 package provides a balance between the minimal 20-pin option and the feature-rich 28-pin version, specifically designed for applications needing moderate GPIO expansion without increasing PCB area significantly.

Controllers Replacement Considerations

CP2102N-A02-GQFN20 (Fewer GPIOs, smaller package)

Controllers FAQ

Does the CP2102N-A02-GQFN24 require an external crystal?

No, the device features an integrated internal oscillator calibrated to 48 MHz, eliminating the need for external crystal components.

What is the maximum supported baud rate for this bridge controller?

The device supports data transfer rates up to 3 Mbaud, configurable via the host driver or API.

How many General Purpose Input/Output (GPIO) pins are available on this package?

The QFN24 package provides four dedicated GPIO pins that can be configured for various digital input/output functions.