USB Bridge Solutions

Product catalog summary

Overview
Silicon Labs' CP21xx USB bridge ICs provide a straightforward solution for integrating USB and HID-USB connectivity into various applications, such as medical devices, phones, card readers, and industrial systems. These ICs eliminate the need for complex USB software development, allowing developers to focus on their core applications.

Interface Solutions
The CP21xx series includes USB-to-UART bridge solutions that simplify the integration of USB connectivity into microcontroller-based designs. Key components include a voltage regulator, USB transceiver, oscillator, and UART interface. These solutions are designed to be easy to implement without requiring USB expertise.

Features

USB 2.0 compliant with full-speed (12 Mbps) capability
No external crystal required
EEPROM or EPROM up to 1024 bytes
Customizable baud rates up to 2 Mbps
Supports modem interface signals
Industrial temperature range from -40 to 85 °C
SMBus master device support (CP2112)
HID class support with no driver installation needed (CP2112)

Applications

USB to RS-232, RS-422/RS-485 converters
Legacy device upgrades
USB interface cables for PDAs and phones
Barcode readers and industrial connectivity
Portable medical equipment and PC peripherals

Development Tools
Silicon Labs provides comprehensive development tools and support, including evaluation kits, to facilitate the integration of USB connectivity into designs. These tools help in setting up, configuring, compiling, and debugging projects.

Product Specifications

Part Number	Description	EEPROM (Bytes)	RAM (Bytes)	Digital Port I/O Pins	Serial Buses	Internal Oscillator	Temp. Range	Other	Package	Eval Kit
CP2104	UART to USB Bridge	1024	1152	4	UART, USB 2.0	Yes	-40 to 85 ºC	Volt Reg, RS-485, Split VDDIO	QFN24	CP2104EK
CP2105	UART to Dual USB Bridge	296	608	—	UART, USB 2.0	Yes	-40 to 85 ºC	Volt Reg, RS-485, Split VDDIO	QFN24	CP2105EK
CP2110	HID USB to UART Bridge	343	960	10	UART, USB 2.0	Yes	-40 to 85 ºC	Volt Reg, RS-485, Split VDDIO	QFN24	CP2110EK
CP2112	USB to SMBus Bridge	194	512	8	USB 2.0, SMBus	Yes	-40 to 85 ºC	Volt Reg	QFN24	CP2112EK

Catalog excerpts

USB Bridge Solutions DESCRIPTION Silicon Labs’ new CP21xx USB bridge ICs eliminate software complexity and driver compatibility issues, providing a cost-effective, small-footprint turnkey solution for adding USB and human interface device (HID)-USB connectivity to applications such as personal medical devices, cellular and cordless phones, smart card and flash card readers, personal digital assistants, MP3 players, bar code readers, wireless modems and industrial control systems. With the rapid proliferation of USB and HID-USB in the embedded world, developers are looking for painless, economical ways to embed USB connectivity in their designs. A leading supplier of USB connectivity solutions, Silicon Labs developed the CP21xx bridge family so that designers can add USB to microcontroller-based applications without the cost and complexity of developing sophisticated USB software. The CP21xx ICs require no USB expertise to deploy, enabling developers to focus time and resources on end applications. www.silabs.com/usb INTERFACE SOLUTIONS USB-TO-UART BRIDGE BLOCK DIAGRAM Voltage Regulator USB Transceiver 48 MHz Oscillator TX Buffer RX Buffer EEPROM or EPROM USB Function Controller UART UART I/F D– (Modem) D+ VBUS I/O Control (Some Devices) UART (CP2105 Only) Download the white paper “USB Simplified”: www.silabs.com/usb www.silabs.com/usb CP21xx FEATURES • USB 2.0 Compliant, full-speed (12 Mbps) • No external crystal required • Up to 1024 Bytes of EEPROM or EPROM • User programmable custom Baud rates • Supports all modem interface signals • Baud rates up to 2 Mbps • Industrial temperature range -40 to 85 °C • SMBus master device (CP2112) • HID class support, no driver installation needed (CP2112) APPLICATIONS • USB to RS-232 converters • USB to Dual RS-232 converters • USB to RS-422/RS-285 converters • Upgrade of legacy RS-232 devices • PDA USB interface cable • Cellular phone USB interface cable • Barcode readers in Point-of-Sale terminals • Portable medical equipment • PC peripherals • Barcode readers in Point-of-Sale terminals • Industrial connectivity (CP2112) EASY USB TO UART BRIDGE COMMUNICATION

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© 2010, Silicon Laboratories Inc. Silicon Laboratories and the Silicon Labs logo are trademarks or registered trademarks of Silicon Laboratories Inc. All other product or service names are the property of their respective owners. For the most up to date information please see your sales representative or visit our website at www.silabs.com. USB Bridge Solutions www.silabs.com/usb Development Tools and Turnkey Support from Silicon Labs SILICON LABORATORIES INC. | 400 W. CESAR CHAVEZ | AUSTIN, TX 78701 | 877-444-3032 | SILABS.COM INTERFACE SOLUTIONS Silicon Labs offers several single-chip connectivity...

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USB Bridge Solutions

USB Bridge Solutions

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