CP2105EK Silicon Laboratories Inc, CP2105EK Datasheet - Page 4

• Manufacturer Part Number: CP2105EK
• Description: KIT EVAL FOR CP2105
• Manufacturer: Silicon Laboratories Inc

Specifications of CP2105EK

• Main Purpose: Interface, Dual USB 2.0 to UART (RS485) Bridge
• Embedded: No
• Utilized Ic / Part: CP2105
• Primary Attributes: Full Speed (12Mbps)
• Secondary Attributes: LED Status Indicators
• Interface Type: RS-232, USB
• Operating Supply Voltage: 3.3 V
• Product: Interface Development Tools
• For Use With/related Products: CP2105
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 336-2005

CP2105
1. System Overview
The CP2105 is a highly-integrated USB-to-Dual-UART Bridge Controller providing a simple solution for updating
RS-232 designs to USB using a minimum of components and PCB space. The CP2105 includes a USB 2.0 full-
speed function controller, USB transceiver, oscillator, one-time programmable ROM, and two asynchronous serial
data buses (UART) with full modem control signals in a compact 4 x 4 mm QFN-24 package (sometimes called
“MLF” or “MLP”).
The on-chip one-time programmable ROM may be used to customize the USB Vendor ID, Product ID, Product
Description String, Power Descriptor, Device Release Number, Interface Strings, Device Serial Number, and
Modem/GPIO configuration as desired for OEM applications.
Royalty-free Virtual COM Port (VCP) device drivers provided by Silicon Labs allow a CP2105-based product to
appear as two COM ports in PC applications. The CP2105 UART interfaces implement all RS-232 signals
including control and handshaking, so existing system firmware does not need to be modified. The device also
features a total of five GPIO signals that can be user-defined for status and control information. Support for
I/O interface voltages down to 1.8 V is provided via a V
pin. Direct access driver support is also available through
IO
the Silicon Labs USBXpress driver set. See www.silabs.com for the latest application notes and product support
information for the CP2105.
An evaluation kit for the CP2105 (Part Number: CP2105EK) is available. It includes a CP2105-based USB-to-
UART/RS-232 evaluation board, a complete set of VCP device drivers, USB and RS-232 cables, and full
documentation. Contact a Silicon Labs sales representatives or go to www.silabs.com to order the CP2105
Evaluation Kit.
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