CP2101 Datasheet, PDF (5/14 Pages) List of Unclassifed Manufacturers – Single-Chip USB to UART Bridge

Preliminary
CP2101
1. SYSTEM OVERVIEW
The CP2101 is a highly-integrated USB-to-UART Bridge Controller providing a simple solution for updating RS232
designs to USB using a minimum of components and PCB space. The CP2101 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 5mm X 5mm MLP-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 Cygnal allow a CP2101-based product to appear as
a COM port to PC applications. The CP2101 UART interface implements all RS232 signals, including control and
handshaking signals, so existing system firmware does not need to be modified. In many existing RS232 designs, all
that is required to update the design from RS232 to USB is to replace the RS232 level-translator with the CP2101.
An evaluation kit for the CP2101 (Part Number: CP2101EK) is available. It includes a CP2101-based USB-to-
UART/RS232 evaluation board, a complete set of VCP device drivers, USB and RS232 cables and full
documentation. Contact any of Cygnal's sales representatives or go to www.cygnal.com to order the CP2101
Evaluation Kit.
2. ABSOLUTE MAXIMUM RATINGS
Table 2.1. Absolute Maximum Ratings^*
PARAMETER
CONDITIONS MIN TYP MAX UNITS
Ambient temperature under bias
-55
125
°C
Storage Temperature
-65
150
°C
Voltage on any I/O Pin or /RST with respect to
GND
-0.3
5.8
V
Voltage on VDD with respect to GND
-0.3
4.2
V
Maximum Total current through VDD and GND
500
mA
Maximum output current sunk by /RST or any
I/O pin
100
mA
*_{Note: stresses above those listed under “Absolute Maximum Ratings” may cause permanent damage to the device.}
This is a stress rating only and functional operation of the devices at those or any other conditions above those indi-
cated in the operation listings of this specification is not implied. Exposure to maximum rating conditions for
extended periods may affect device reliability.
© 2003 Cygnal Integrated Products, Inc. DS014-1.0 AUG03
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