CP2105-F01-GM I/O Controller Interface IC USB to Dual UART Bridge 

Description

The CP2105 is a highly integrated USB-to-Dual-UART Bridge Controller providing a simple solution for

updatingRS-232 designs to USB using a minimum of components and PCB space. The CP2105 includes

a USB 2.0 fullspeed function controller, USB transceiver, oscillator, one-time programmable ROM, and two

asynchronous serialdata 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,

ProductDescription String, Power Descriptor, Device Release Number, Interface Strings, Device Serial

Number, andModem/GPIO configuration as desired for OEM applications.Royalty-free Virtual COM Port

(VCP) device drivers provided by Silicon Labs allow a CP2105-based product toappear as two COM ports

in PC applications. The CP2105 UART interfaces implement all RS-232 signalsincluding control and

handshaking, so existing system firmware does not need to be modified. The device alsofeatures a total of

five GPIO signals that can be user-defined for status and control information. Support forI/O interface

voltages down to 1.8 V is provided via a VIO pin. Direct access driver support is also available through 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. 

Single-Chip USB to Dual UART Data Transfer
●Integrated USB transceiver; no extemal resistors required
●Integrated clock; no extemal crystal required
●Integrated 296-Byte One-Time Programmable ROM for storing customizable product information
●On-chip power-on reset circuit
●On-chip voltage regulator: 3.45 V output

USB Peripheral Function Controller
●USB Specification 2.0 compliant; fll-speed (12 Mbps)
●USB Suspend states supported via SUSPEND pins
 

Two UART Interfaces ("Enhanced" and“Standard")
●Flow control options:
--Hardware (CTS/ RTS)
--Software (X-On 1 X-Of)
--No flow control
●Configurable /O (1.8 V to Vpo) using Vo pin
●Configurable 10 (Voo to 5 V) using external pull-up
●All modem interface signals available (when GPIO is not used)

Enhanced UART Interface Features
●Data formats supported:
--Data bits: 5, 6, 7, and 8
--Stop bits: 1, 1.5, and 2
--Parity: odd, even, mark, space, no parity
●Baud rates: 300 bps to 2.0 Mbps
●320 Byte receive and transmit buffers
●Two GPIO signals for status and control
●RS-485 mode with bus transceiver control

Standard UART Interface Features
●Data format: 8 data bits, 1 Stop bit
●Parity: Even, Odd, No parity
●Baud rates: 2400 bps to 921600 bps
●288 Byte receive and transmit buffers

●Three GPIO signals for status and control

Virtual COM Port Device Drivers
●Works with Existing COM Port PC Applications
●Royalty-Free Distribution License
●Windows 7/Mista/XP/Server 2003/2000
●Mac OS-X
●Linux

USBXpress TM Direct Driver Support
●Royalty-Free Distribution License
●Windows 7/Mista/XP/Server 2003/2000
● Windows CE 6.0, 5.0, and 4.2

Supply Voltage
●Self-powered: 3.0 to 3.6 V
●USB bus powered: 4.0 to 5.25 V
●I/0 voltage: 1.8 V to VDD

Package
●RoHS-compliant 24-pin QFN (4 x 4 mm)
 

Ordering Part Number
●CP2105-F01-GM

Temperature Range: -40 to +85.C