cp2102 Silicon Laboratories, cp2102 Datasheet - Page 4

• Manufacturer Part Number: cp2102
• Description: Single-chip Usb To Uart Bridge
• Manufacturer: Silicon Laboratories

CP2102
1. System Overview
The CP2102 is a highly-integrated USB-to-UART Bridge Controller providing a simple solution for updating RS-232
designs to USB using a minimum of components and PCB space. The CP2102 includes a USB 2.0 full-speed
function controller, USB transceiver, oscillator, EEPROM, and asynchronous serial data bus (UART) with full
modem control signals in a compact 5 x 5 mm QFN-28 package. No other external USB components are required.
The on-chip EEPROM may be used to customize the USB Vendor ID, Product ID, Product Description String,
Power Descriptor, Device Release Number, and Device Serial Number as desired for OEM applications. The
EEPROM is programmed on-board via the USB allowing the programming step to be easily integrated into the
product manufacturing and testing process.
Royalty-free Virtual COM Port (VCP) device drivers provided by Silicon Laboratories allow a CP2102-based
product to appear as a COM port to PC applications. The CP2102 UART interface implements all RS-232 signals,
including control and handshaking signals, so existing system firmware does not need to be modified. In many
existing RS-232 designs, all that is required to update the design from RS-232 to USB is to replace the RS-232
level-translator with the CP2102. Direct access driver support is available through the Silicon Laboratories
USBXpress driver set.
An evaluation kit for the CP2102 (Part Number: CP2102EK) is available. It includes a CP2102-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 CP2102
Evaluation Kit.
2. Absolute Maximum Ratings
4
Table 1. Absolute Maximum Ratings
Ambient temperature under bias
Storage Temperature
Voltage on any I/O Pin or RST with respect to GND
Voltage on V
Maximum Total current through V
Maximum output current sunk by RST or any I/O pin
Note: Stresses above those listed may cause permanent damage to the device. This is a stress rating only, and functional
operation of the devices at or exceeding the conditions in the operation listings of this specification is not implied.
Exposure to maximum rating conditions for extended periods may affect device reliability.
DD
with respect to GND
Parameter
DD
and GND
Rev. 1.2
Conditions
–0.3
–0.3
Min
–55
–65
—
—
Typ
—
—
—
—
—
—
Max
125
150
500
100
5.8
4.2
Units
mA
mA
°C
°C
V
V