Overview
The CP2104-F03-GMR, produced by Silicon Labs, is a highly integrated USB-to-UART Bridge Controller designed to provide a simple and efficient solution for updating legacy RS-232 and RS-485 designs to USB. This single-chip solution integrates a USB 2.0 full-speed function controller, a USB transceiver, a 48 MHz oscillator, and an asynchronous serial data bus (UART) with full modem control signals. The device is packaged in a compact 24-pin QFN (4x4 mm) and is RoHS-compliant. It supports royalty-free Virtual COM Port (VCP) device drivers, making it compatible with various operating systems including Windows, Mac OS-X, and Linux.
Key Specifications
| Parameter | Description |
|---|---|
| Package Type | 24-pin QFN (4x4 mm) |
| USB Specification | USB 2.0 compliant, full-speed (12 Mbps) |
| UART Interface | All handshaking and modem interface signals, data bits: 5, 6, 7, 8; stop bits: 1, 1.5, 2; parity: odd, even, mark, space, no parity |
| Baud Rates | 300 bps to 2 Mbits |
| Supply Voltage | Self-powered: 3.0 to 3.6 V, USB bus powered: 4.0 to 5.25 V |
| I/O Voltage | 1.8 V to VDD |
| GPIO | Four GPIO signals for status and control |
| Temperature Range | –40 to +85 °C |
| Integrated Components | Integrated USB transceiver, clock, one-time programmable ROM, and voltage regulator |
Key Features
- Integrated USB transceiver with no external resistors required
- Integrated 48 MHz oscillator with no external crystal needed
- Integrated 1024-Byte One-Time Programmable ROM for customizable product information
- On-chip power-on reset circuit and voltage regulator (3.45 V output)
- Support for USB Suspend states via SUSPEND and SUSPEND pins
- Four user-defined GPIO signals for status and control
- Support for I/O interface voltages down to 1.8 V via VIO pin
- Royalty-free Virtual COM Port (VCP) device drivers
- Compatibility with Windows, Mac OS-X, and Linux operating systems
Applications
- Upgrade of RS-232 legacy devices to USB
- Upgrade of RS-485 legacy devices to USB
- Cellular phone USB interface cable
- PDA USB interface cable
- USB to RS-232 serial adapter
Q & A
- What is the primary function of the CP2104-F03-GMR?
The CP2104-F03-GMR is a USB-to-UART Bridge Controller that converts USB signals to UART (RS-232/RS-485) signals.
- What operating systems are supported by the CP2104-F03-GMR?
The device supports Windows, Mac OS-X, and Linux operating systems.
- What is the package type and size of the CP2104-F03-GMR?
The device is packaged in a 24-pin QFN (4x4 mm).
- What are the supported baud rates for the CP2104-F03-GMR?
The device supports baud rates from 300 bps to 2 Mbits.
- Does the CP2104-F03-GMR require external components for USB functionality?
No, the CP2104-F03-GMR integrates all necessary components, including the USB transceiver and clock, eliminating the need for external resistors or a crystal.
- What is the temperature range for the CP2104-F03-GMR?
The device operates within a temperature range of –40 to +85 °C.
- Can the CP2104-F03-GMR be used in self-powered and bus-powered configurations?
- What is the purpose of the integrated one-time programmable ROM in the CP2104-F03-GMR?
The integrated ROM allows for customizable product information such as USB Vendor ID, Product ID, and other descriptors.
- Does the CP2104-F03-GMR support GPIO signals?
- Is the CP2104-F03-GMR RoHS-compliant?
