Overview
The CP2102-GM, produced by Silicon Labs, is a highly integrated single-chip USB-to-UART bridge controller. This device provides a straightforward solution for upgrading legacy RS-232 designs to USB, requiring a minimal number of components and PCB space. The CP2102-GM is USB 2.0 compliant, operating at full-speed (12 Mbps), and includes an integrated USB transceiver, clock, and voltage regulator. It is designed to be 100% pin and software compatible with the CP2101 USB Function Controller, making it an ideal choice for various OEM applications.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Ambient Temperature under Bias | –55 | 125 | °C | |
| Storage Temperature | –65 | 150 | °C | |
| Voltage on VDD with respect to GND | –0.3 | 4.2 | V | |
| Maximum Total Current through VDD and GND | 500 | mA | ||
| Supply Voltage (Self-powered) | 3.0 | 3.6 | V | |
| Supply Voltage (USB bus powered) | 4.0 | 5.25 | V | |
| Package | 28-pin QFN (5x5 mm) | |||
| Temperature Range | –40 | +85 | °C |
Key Features
- Integrated USB transceiver; no external resistors required.
- Integrated clock; no external crystal required.
- Internal 1024-byte EEPROM for customizing USB configuration data (Vendor ID, Product ID, serial number, etc.).
- On-chip power-on reset circuit and voltage regulator (3.3 V output).
- USB 2.0 compliant; full-speed (12 Mbps) with support for USB suspend states.
- Asynchronous serial data bus (UART) with full modem control signals.
- Supports various data formats: 5, 6, 7, and 8 data bits; 1, 1.5, and 2 stop bits; odd, even, mark, space, and no parity.
- Baud rates from 300 bps to 1 Mbps.
- 576-byte receive buffer and 640-byte transmit buffer.
- Hardware or X-On/X-Off handshaking supported.
- Royalty-free Virtual COM Port (VCP) device drivers provided by Silicon Laboratories.
Applications
- Upgrade of RS-232 legacy devices to USB.
- Cellular phone USB interface cables.
- PDA USB interface cables.
- USB to RS-232 serial adapters.
- OEM applications requiring customized USB configuration data.
Q & A
- What is the primary function of the CP2102-GM?
The CP2102-GM is a single-chip USB-to-UART bridge controller, designed to convert USB signals to UART (RS-232) signals.
- What are the key integrated components of the CP2102-GM?
The CP2102-GM includes an integrated USB transceiver, clock, voltage regulator, and EEPROM.
- What is the operating temperature range of the CP2102-GM?
The operating temperature range is –40 to +85 °C.
- What are the supported baud rates for the UART interface?
The UART supports baud rates from 300 bps to 1 Mbps.
- Does the CP2102-GM support hardware handshaking?
- How is the EEPROM programmed in the CP2102-GM?
The EEPROM is programmed via the USB, allowing customization of USB configuration data during the manufacturing and testing process.
- What type of package does the CP2102-GM come in?
The CP2102-GM comes in a 28-pin QFN (5x5 mm) package.
- Is the CP2102-GM compatible with existing COM port PC applications?
- What are some common applications of the CP2102-GM?
- Can the CP2102-GM be used in OEM applications?
