CP2105-F01-GMR

Controllers Overview

The CP2105-F01-GMR is a single-chip USB to dual UART bridge controller manufactured by Silicon Labs. It integrates a USB 2.0 full-speed function controller, transceiver, and oscillator within a 4x4 mm QFN-24 package. The device supports self-powered operation at 3.0 V to 3.6 V or bus power at 4.0 V to 5.25 V, with an I/O voltage range of 1.8 V to VDD. Normal supply current is typically 17 mA. It features two asynchronous serial interfaces: an Enhanced Communications Interface (ECI) supporting baud rates from 300 bps to 2.0 Mbps with up to 320-byte buffers, and a Standard Communications Interface (SCI) supporting rates from 2400 bps to 921600 bps with 288-byte buffers. The component includes five user-configurable GPIO pins and operates within a temperature range of –40 °C to +85 °C.

Controllers Feature Summary

• Integrates USB 2.0 full-speed peripheral controller and transceiver without requiring external resistors or crystals
• Provides two independent UART interfaces with configurable hardware flow control and modem signals
• Includes on-chip one-time programmable ROM for customizing product identification and configuration data
• Supports royalty-free Virtual COM Port drivers for Windows, Mac OS-X, and Linux environments

Controllers Applications

• Replacing legacy RS-232 designs in embedded systems using minimal PCB space
• Industrial equipment requiring dual serial communication channels over USB
• IoT devices needing customizable USB enumeration parameters via OTP ROM
• Evaluation and prototyping using the dedicated CP2105EK development kit

Controllers Procurement Notes

Verify that the specific ordering suffix matches the required packaging format, as the 'R' suffix indicates tape-and-reel delivery. Confirm that the intended application voltage aligns with the specified 3.0 V to 3.6 V digital supply range for self-powered configurations. Ensure compatibility with the provided royalty-free driver licenses for the target operating system before finalizing procurement specifications.

Controllers Selection Notes

Select this component when a design requires two distinct UART ports connected to a single USB interface. The ECI interface offers higher baud rate flexibility compared to the SCI interface. Consider the integrated voltage regulator if the design utilizes bus power, ensuring the REGIN pin is properly decoupled. Verify that the 4x4 mm QFN-24 footprint fits within the mechanical constraints of the target enclosure.

Controllers Part Context

This part belongs to the CP2105 family of USB-to-UART bridges. It is distinguished by its dual-channel capability, unlike single-port variants such as the CP2102. The F01 designation typically refers to the specific factory programming configuration or revision level. The GMR suffix denotes the RoHS-compliant tape-and-reel packaging variant suitable for automated surface-mount assembly processes.

Controllers Replacement Considerations

Direct functional replacements include other dual UART bridge controllers from competing manufacturers, though pinouts may differ. For single-channel applications, the CP2102 serves as a simplified alternative. When substituting, verify that the new component supports the required baud rates and buffer sizes, and ensure that any custom VID/PID configurations programmed into the original OTP ROM are replicated in the replacement.