CP2101 Silicon Laboratories Inc, CP2101 Datasheet - Page 4

• Manufacturer Part Number: CP2101
• Description: IC USB-TO-UART BRIDGE 28MLP
• Manufacturer: Silicon Laboratories Inc

Specifications of CP2101

• Applications: USB
• Interface: USB
• Voltage - Supply: 3 V ~ 3.6 V
• Package / Case: 28-VQFN Exposed Pad, 28-HVQFN, 28-SQFN, 28-DHVQFN
• Mounting Type: Surface Mount
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

1.
The CP2101 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 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 5 x 5 mm 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 Silicon Laboratories allow a CP2101-
based product to appear as a COM port to PC applications. The CP2101 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 CP2101.
An evaluation kit for the CP2101 (Part Number: CP2101EK) is available. It includes a CP2101-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
CP2101 Evaluation Kit.
2.
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 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 condi-
tions above those indicated in the operation listings of this specification is not implied. Exposure to maxi-
mum rating conditions for extended periods may affect device reliability.
System Overview
Absolute Maximum Ratings
DD
with respect to GND
Parameter
Table 2.1. Absolute Maximum Ratings
DD
and GND
Conditions
Rev. 1.6
–0.3
–0.3
Min
–55
–65
—
—
Typ
—
—
—
—
—
—
Max
125
150
500
100
5.8
4.2
CP2101
Units
mA
mA
°C
°C
V
V
4