CP2101
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CP2101 - CP2101
CP2101
Single-Chip UART Bridge
Single-Chip UART Data Transfer Integrated Transceiver; External Resistors Required Integrated Clock; External Crystal Required Integrated 512-Byte EEPROM Vendor Product Serial Number, Power Descriptor, Release Number Product Description Strings On-Chip Power-On Reset Circuit On-Chip Voltage Regulator: Output
Virtual Port Device Drivers Works with Existing Port Applications Royalty-Free Distribution License Windows 98SE/2000/XP OS-9 OS-X Windows Linux 2.40 (currently supports binary only)
(Contact factory availability)
Function Controller Specification Compliant; Full Speed
Mbps) suspend states supported SUSPEND pins
Asynchronous Serial Data (UART) Handshaking Modem Interface Signals Data Formats Supported: Data Bits: Stop Bits: Parity: Odd, Even, Parity Baud Rates: 921.6 kbps Byte Receive Buffer; Byte Transmit Buffer Hardware X-On X-Off Handshaking Supported Event Character Support
Example Applications Upgrade RS-232 Legacy Devices Cellular Phone Interface Cable Interface Cable RS-232 Serial Adapter Supply Voltage Self-powered: Powered: 5.25 Package 28-pin Temperature Range:
REGIN
Voltage Regulator
CP2101
SUSPEND
external circuitry suspend states)
SUSPEND
CONNECTOR VBUS
VBUS
Oscillator
External RS-232 transceiver UART circuitry
Transceiver
Function Controller 512B 512B 512B EEPROM Buffer Buffer
UART
Example System Diagram
Rev. 1/05
Copyright 2005 Silicon Laboratories
CP2101
CP2101
Rev.
CP2101
Table Contents
System Overview. Absolute Maximum Ratings Table 2.1. Absolute Maximum Ratings. Global Electrical Characteristics Table 3.1. Global Electrical Characteristics Table 3.2. UART Suspend Electrical Characteristics Pinout Package Definitions. Table 4.1. Definitions CP2101 Figure 4.1. MLP-28 Pinout Diagram (Top View) Figure 4.2. MLP-28 Package Drawing Table 4.2. MLP-28 Package Dimensions Figure 4.3. Typical MLP-28 Landing Diagram Figure 4.4. Typical MLP-28 Solder Mask Function Controller Transceiver Figure 5.1. Typical Connection Diagram Asynchronous Serial Data (UART) Interface. Table 6.1. Data Formats Baud Rates. Internal EEPROM Table 7.1. Default Configuration Data. Virtual Port Device Drivers Voltage Regulator. Table 9.1. Voltage Regulator Electrical Specifications. Figure 9.1. Configuration Bus-Powered Figure 9.2. Configuration Self-Powered Figure 9.3. Configuration Self-Powered, Regulator Bypassed
Rev.
CP2101
System Overview
CP2101 highly-integrated USB-to-UART Bridge Controller providing simple solution updating RS-232 designs using minimum components space. CP2101 includes full-speed function controller, transceiver, oscillator, EEPROM asynchronous serial data (UART) with full modem control signals compact MLP-28 package. other external components required. on-chip EEPROM used customize Vendor Product Product Description String, Power Descriptor, Device Release Number Device Serial Number desired applications. EEPROM programmed on-board allowing programming step easily integrated into product manufacturing testing process. Royalty-free Virtual Port (VCP) device drivers provided Silicon Laboratories allow CP2101based product appear port applications. CP2101 UART interface implements RS-232 signals, including control handshaking signals, existing system firmware does need modified. many existing RS-232 designs, that required update design from RS-232 replace RS-232 level-translator with CP2101. evaluation CP2101 (Part Number: CP2101EK) available. includes CP2101-based USB-to-UART/RS-232 evaluation board, complete device drivers, RS-232 cables, full documentation. Contact Silicon Labs' sales representatives www.silabs.com order CP2101 Evaluation Kit.
Absolute Maximum Ratings
Table 2.1. Absolute Maximum Ratings
Parameter Conditions -0.3 -0.3 Units
Ambient temperature under bias Storage Temperature Voltage with respect Voltage with respect Maximum Total current through Maximum output current sunk
Note: stresses above those listed under "Absolute Maximum Ratings" cause permanent damage device. This stress rating only functional operation devices those other conditions above those indicated operation listings this specification implied. Exposure maximum rating conditions extended periods affect device reliability.
Rev.
CP2101
Global Electrical Characteristics
Table 3.1. Global Electrical Characteristics
unless otherwise specified Parameter Supply Voltage Supply Current Supply Current Suspend Specified Operating Temperature Range Conditions Units
Table 3.2. UART Suspend Electrical Characteristics
unless otherwise specified Parameters Conditions -3mA VDD-0.7 Output High Voltage -10µA -10mA 8.5mA Output Voltage Input High Voltage Input Voltage Input Leakage Current 10µA 25mA VDD-0.1 VDD-0.8 UNITS
Rev.
CP2101
Pinout Package Definitions
Table 4.1. Definitions CP2101
Name REGIN VBUS SUSPEND SUSPEND 13-22 Power Type Power Power Description 3.0-3.6 Power Supply Voltage Input. Voltage Regulator Output. Section Ground Device Reset. Open-drain output internal monitor. external source initiate system reset driving this least Regulator Input. This input on-chip voltage regulator. VBUS Sense Input. This should connected VBUS signal network. signal this indicates network connection. Asynchronous data output (UART Transmit) Asynchronous data input (UART Receive) Clear Send control input (active low) Ready Send control output (active low) Data Ready control input (active low) Data Terminal Ready control output (active low) Data Carrier Detect control input (active low) Ring Indicator control input (active low) This driven high when CP2101 enters suspend state. This driven when CP2101 enters suspend state. These pins should left unconnected tied VDD.
*Note: Pins left unconnected when used.
Rev.
CP2101
DVDD REGIN
CP2101 View
VBUS
SUSPEND
Figure 4.1. MLP-28 Pinout Diagram (Top View)
Rev.
SUSPEND
CP2101
Bottom View
Table 0.1. MLP-28 Package Dimensions
DETAIL
0.80 0.18 2.90 2.90 0.45 0.09 0.90 0.02 0.65 0.25 0.23 5.00 3.15 5.00 3.15 0.55 0.435 0.435 0.18 0.18 1.00 0.05 1.00 0.30 3.35 3.35 0.65
Side View
Rev.
DETAIL
Figure 4.2. MLP-28 Package Drawing
CP2101
View
0.20 0.50 0.20 0.30 0.85
0.50 0.35
0.50
0.20
Optional Connection
0.10
0.20
0.30
0.50 0.10
0.35
0.85
Figure 4.3. Typical MLP-28 Landing Diagram
Rev.
CP2101
View
0.50 0.20 0.20 0.30 0.85
0.50 0.60 0.60 0.70 0.30 0.20 0.40 0.35
0.50
0.20
0.10
0.20
0.30
0.50 0.10
0.35
0.85
Figure 4.4. Typical MLP-28 Solder Mask
Rev.
CP2101
Function Controller Transceiver
Universal Serial function controller CP2101 compliant full-speed device with integrated transceiver on-chip matching pull-up resistors. function controller manages data transfers between UART well command requests generated host controller commands controlling function UART. Suspend Resume signals supported power management both CP2101 device well external circuitry. CP2101 will enter Suspend mode when Suspend signaling detected bus. entering Suspend mode, CP2101 asserts SUSPEND SUSPEND signals. SUSPEND SUSPEND also asserted after CP2101 reset until device configuration during Enumeration complete CP2101 exits Suspend mode when following occur: Resume signaling detected generated, Reset signal detected, device reset occurs. exit Suspend mode, SUSPEND SUSPEND signals de-asserted. Both SUSPEND SUSPEND temporarily float high during CP2101 reset. this behavior undesirable, strong pulldown used ensure SUSPEND remains during reset. Figure other recommended options.
CP2101
REGIN SUSPEND TANT Option SUSPEND
Option
Option
external circuitry suspend states)
CONNECTOR VBUS
VBUS
External RS-232 transceiver UART circuitry
Option
Option pull-up resistor added increase noise immunity. Option tantalum capacitor added powering other devices from on-chip regulator. Option Avalanche transient voltage suppression diodes added protection. Option Littlefuse SP0503BAHT equivalent. Option resistor ground hold SUSPEND initial power device reset.
Figure 5.1. Typical Connection Diagram
Rev.
CP2101
Asynchronous Serial Data (UART) Interface
CP2101 UART interface consists (transmit) (receive) data signals well RTS, CTS, DSR, DTR, control signals. UART supports RTS/CTS, DSR/DTR X-On/XOff handshaking. UART programmable support variety data formats baud rates. data format baud rate programmed into UART during port configuration data formats baud rates available listed Table 6.1.
Table 6.1. Data Formats Baud Rates
Data Bits Stop Bits Parity Type Baud Rates None, Even, 300, 600, 1200, 1800, 2400, 4800, 7200, 9600, 14400, 19200, 28800, 38400, 56000, 57600, 115200, 128000, 230400, 460800, 921600
Internal EEPROM
CP2101 includes internal EEPROM that used customize Vendor Product Product Description String, Power Descriptor, Device Release Number Device Serial Number desired applications. Customization configuration data optional. EEPROM programmed with data, default configuration data shown Table used. However, unique serial number required applications which possible multiple CP2101-based devices connected same internal EEPROM programmed USB. This allows OEM's configuration data serial number written CP2101 on-board during manufacturing testing process. stand-alone utility programming internal EEPROM available from Silicon Laboratories. library routines provided form Windows® also available. This library used integrate EEPROM programming step into custom software used streamline testing serial number management during manufacturing. EEPROM typical endurance 100,000 write cycles with data retention years.
Table 7.1. Default Configuration Data
Name Vendor Product Power Descriptor (Max. Power) Release Number Serial Number Product Description String Value 10C4h EA60h 0100h 0001 characters maximum) "CP2101 UART Bridge Controller" (126 characters maximum)
Power Descriptor (Attributes)
Rev.
CP2101
Virtual Port Device Drivers
CP2101 Virtual Port (VCP) device drivers allow CP2101-based device appear PC's application software additional port addition existing hardware ports). Application software running accesses CP2101-based device would access standard hardware port. However, actual data transfer between CP2101 device performed over USB. Therefore, existing port applications used transfer data CP2101-based device without modifying application. Contact Silicon Laboratories latest list supported operating systems. Note: Silicon Laboratories device drivers required device operation only distributed part CP2101 Evaluation (Part Number: CP2101EK). Contact Silicon Lab's sales representatives www.silabs.com order CP2101 Evaluation Kit. CP2101 drivers programming utilities subject change without notice. Subscription website "Auto Email Alert" system automatic notification updates "Product Update Registration" service recommended.
Rev.
CP2101
Voltage Regulator
CP2101 includes on-chip 5-to-3 voltage regulator. This allows CP2101 configured either bus-powered device self-powered device. These configurations shown Figure Figure 9.2. When enabled, voltage regulator output appears used power external devices. Table voltage regulator electrical characteristics. Alternatively, power supplied pin, CP2101 function self-powered device with voltage regulator disabled. this configuration, recommended that REGIN input tied disable voltage regulator. This configuration shown Figure 9.3. power power attributes descriptor must match device power usage configuration. application note "AN144: CP2101 Customization Guide" information customize descriptors CP2101. Note: recommended that additional decoupling capacitance (e.g., parallel with provided REGIN input.
Table 9.1. Voltage Regulator Electrical Specifications
unless otherwise specified Parameter Input Voltage Range Output Voltage VBUS Detection Input Threshold Bias Current maximum regulator supply current Output Current Conditions 5.25 Units
CP2101
VBUS
From VBUS REGIN
VBUS Sense
Voltage Regulator (REG0)
Power Device Power
Figure 9.1. Configuration Bus-Powered
Rev.
CP2101
CP2101
From VBUS
VBUS
VBUS Sense From Power REGIN
Voltage Regulator (REG0)
Power Device Power
Figure 9.2. Configuration Self-Powered
CP2101
From VBUS
VBUS
VBUS Sense REGIN
Voltage Regulator (REG0)
From Power Device Power
Figure 9.3. Configuration Self-Powered, Regulator Bypassed
Rev.
CP2101
Document Change List
Revision Revision
"Virtual Port Device Drivers" page Added after Windows Changed "Linux 2.40 greater" "Linux 2.40 (currently supports binary only)"
Rev.
CP2101
Notes:
Rev.
CP2101
Contact Information
Silicon Laboratories Inc. 4635 Boston Lane Austin, 78735 Tel: 1+(512) 416-8500 Fax: 1+(512) 416-9669 Toll Free: 1+(877) 444-3032 Email: MCUinfo@silabs.com Internet: www.silabs.com
information this document believed accurate respects time publication subject change without notice. Silicon Laboratories assumes responsibility errors omissions, disclaims responsibility consequences resulting from information included herein. Additionally, Silicon Laboratories assumes responsibility functioning undescribed features parameters. Silicon Laboratories reserves right make changes without further notice. Silicon Laboratories makes warranty, representation guarantee regarding suitability products particular purpose, does Silicon Laboratories assume liability arising application product circuit, specifically disclaims liability, including without limitation consequential incidental damages. Silicon Laboratories products designed, intended, authorized applications intended support sustain life, other application which failure Silicon Laboratories product could create situation where personal injury death occur. Should Buyer purchase Silicon Laboratories products such unintended unauthorized application, Buyer shall indemnify hold Silicon Laboratories harmless against claims damages. Silicon Laboratories Silicon Labs trademarks Silicon Laboratories Inc. Other products brandnames mentioned herein trademarks registered trademarks their respective holders
Rev.
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