Single-Chip USB to UART Bridge
Rev. 1.8 5/07Copyright © 2007 by Silicon Laboratories
CP2101
Single-Chip USB to UART Data Transfer
-Integrated USB Transceiver; No External Resistors Required
-Integrated Clock; No External Crystal Required -Integrated 512-Byte EEPROM for Vendor ID, Product ID, Serial Number, Power Descriptor, Relea Number and Product Description Strings -On-Chip Power-On Ret Circuit
-On-Chip Voltage Regulator: 3.3 V Output
USB Function Controller
-USB Specification 2.0 Compliant; Full Speed (12 Mbps)
-
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USB suspend states supported via SUSPEND pins
Asynchronous Serial Data BUS (UART)-All Handshaking and Modem Interface Signals -Data Forma
西湖古诗ts Supported:
•Data Bits: 8•Stop Bits: 1
•Parity: Odd, Even, No Parity -Baud Rates: 300 bps to 921.6 kbps
氨金黄敏颗粒-512 Byte Receive Buffer; 512 Byte Transmit Buffer -Hardware or X-On / X-Off Handshaking Supported -Event Character Support
Virtual COM Port Device Drivers
-Works with Existing COM Port PC Applications -Royalty-Free Distribution Licen
-Windows Vista/XP/Server 2003/2000/98SE -Mac OS-X/OS-9-Linux 2.40
USBXpress™ Direct Driver Support -Royalty-Free Distribution Licen -Windows Vista/XP/Server 2003/2000-Windows CE 6.0, 5.0, and 4.2
Example Applications
-Upgrade of RS-232 Legacy Devices to USB -Cellular Phone USB Interface Cable -PDA USB Interfa
ce Cable -USB to RS-232 Serial Adapter Supply Voltage
十九峰
-Self-powered: 3.0 to 3.6 V
-USB Bus Powered: 4.0 to 5.25 V Package
-Pb-free 28-pin QFN (5 x 5 mm)Ordering Part Number -CP2101-GM
Temperature Range: -40 to +85 °C
Note: The CP2101 is a mature product and is not rec-ommended for new designs. The CP2102 is a pin and software compatible alternative for the CP2101. The CP2102 is recommended for all new designs.
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Rev. 1.8
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Table of Contents
1. 52.Absolute Maximum Ratings.. (5)
Table 2.1. Absolute Maximum Ratings (5)
3.Global DC Electrical Characteristics (6)
Table 3.1. Global DC Electrical Characteristics ...................................................6Table 3.2. UART an
d Suspend I/O DC Electrical Characteristics ........................6Table 3.3. Ret Electrical Characteristics ..........................................................64.Pinout and Package Definitions.. (7)
Table 4.1. Pin Definitions for 7Figure 4.1. QFN-28 Pinout Diagram (Top View) ..................................................8Figure 4.2. QFN-28 Package Drawing .................................................................9Table 4.2. QFN-28 9Figure 4.3. Typical QFN-28 Landing Diagram ...................................................10Figure 4.4. Typical QFN-28 Solder Paste Recommendation .. (11)
5.USB Function Controller and Transceiver (12)
Figure 5.1. Typical Connection Diagram (12)
6.Asynchronous Serial Data Bus (UART) Interface (12)
Table 6.1. Data Formats and Baud Rates (13)
7.Internal EEPROM (13)
Table 7.1. Default USB 138.CP2101 Device Dr
< 148.1. Virtual COM Port Drivers ..................................................................................148.2. USBXpress Drivers ...........................................................................................148.3. Driver Customization ........................................................................................148.4. Driver Certification ............................................................................................149.Voltage Regulator.. (15)
Table 9.1. Voltage Regulator Electrical Specifications .......................................15Figure 9.1. Configuration 1: USB Bus-Powered .................................................15Figure 9.2. Configuration 2: USB Self-Powered .................................................16Figure 9.3. Configuration 3: USB Self-Powered, Regulator Bypasd ..............1610.Relevant 17Document Change List ...............................................................................................18Contact Information . (20)
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1.
System Overview
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 incl
udes a USB 2.0 full-speed function controller, USB transceiver, oscillator, EEPROM and asynchronous rial 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 ud to customize the USB Vendor ID, Product ID, Product Description String, Power Descriptor, Device Relea Number and Device Serial Number as desired for OEM applica-tions. The EEPROM is programmed on-board via the USB allowing the programming step to be easily inte-grated into the product manufacturing and testing process.
Royalty-free Virtual COM Port (VCP) device drivers provided by Silicon Laboratories allow a CP2101-bad 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. Direct access driver support is available through the Silicon Laboratories USBXpress driver t.
The CP2101 is a mature product and is not recommended for new designs. The CP2102 is a pin and soft-ware compatible alternative for the CP2101. The CP2102 is recommended for all new desi
碎花瓶理论
gns. Contact Silicon Laboratories customer support at for any questions about replacing the CP2101.
2.Absolute Maximum Ratings
Table 2.1. Absolute Maximum Ratings
Note:Stress above tho listed under “Absolute Maximum Ratings” may cau permanent damage to the device.
This is a stress rating only and functional operation of the devices at tho or any other conditions above tho indicated in the operation listings of this specification is not implied. Exposure to maximum rating conditions for extended periods may affect device reliability.
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— 5.8V Voltage on V DD with respect to GND
–0.3— 4.2V Maximum Total current through V DD and GND ——500mA Maximum output current sunk by RST or any I/O pin
—
—
100
mA
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3.Global DC Electrical Characteristics
Table 3.1. Global DC Electrical Characteristics
V DD = 3.0 to 3.6 V, –40 to +85 °C unless otherwi specified.
1.USB Pull-up Current should be added for total supply current.
2. The USB Pull-up supply current values are calculated values bad on USB specifications. Table
3.2. UART and Suspend I/O DC Electrical Characteristics
V DD = 3.0 to 3.6 V, -40 to +85 °C unless otherwi specified.
I OH = –3 mA I OH = –10 µA I OH = –10 mA V DD – 0.7
V DD – 0.1
—
—
—
V DD – 0.8
—
—
—
I OL = 8.5 mA I OL = 10 µA I OL = 25 mA —
—
—
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—
1.0
0.6
0.1
—
Table 3.3. Ret Electrical Characteristics
-40°C to +85°C unless otherwi specified.
Parameter Conditions Min Typ Max Units /RST Output Low Voltage I OL = 8.5 mA,
VDD = 3.0 V to 3.6 V
——0.6V /RST Input High Voltage0.7 x VDD——V /RST Input Low Voltage——0.3 x VDD
安踏广告语>黄轩资料个人资料/RST Input Pull-Up Current/RST = 0.0 V—2540µA
Minimum /RST Low Time to Generate a System Ret 15——µs
Parameter Conditions Min Typ Max Units Supply Voltage 3.0 3.3 3.6V Supply Current1Normal Operation;
V REG Enable
—2226mA
Supply Current1Suspended;
V REG Enable
—78200µA Supply Current - USB Pull-up2—200228µA Specified Operating Temperature Range–40—+85°C Notes:
Parameters Conditions Min Typ Max Units Output High Voltage V Output Low Voltage V
Input High Voltage 2.0——V Input Low Voltage——0.8V Input Leakage Current—2550µA
