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CP2102数据手册

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  • 日期: 2016-08-15
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标签: CP2102

cp2102是一款高度集成的USB-UART桥接器,能够提供一个使用最小化元件和PCB空间来实现RS232转换USB的简便解决方案。简单点说就是:用户使用cp2102能够将USB接口与RS232接口进行相互转换。

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CP2102 SINGLECHIP USB TO UART BRIDGE SingleChip USB to UART Data Transfer Virtual COM Port Device Drivers cid122 Integrated USB transceiver no external resistors required cid122 Integrated clock no external crystal required cid122 Integrated 1024Byte EEPROM for vendor ID product ID serial number power descriptor release number and product description strings cid122 Onchip poweron reset circuit cid122 Onchip voltage regulator 33 V output cid122 100 pin and software compatible with CP2101 USB F......

CP2102 SINGLE-CHIP USB TO UART BRIDGE Single-Chip USB to UART Data Transfer Virtual COM Port Device Drivers (cid:122) Integrated USB transceiver; no external resistors required (cid:122) Integrated clock; no external crystal required (cid:122) Integrated 1024-Byte EEPROM for vendor ID, product ID, serial number, power descriptor, release number, and product description strings (cid:122) On-chip power-on reset circuit (cid:122) On-chip voltage regulator: 3.3 V output (cid:122) 100% pin and software compatible with CP2101 USB Function Controller (cid:122) USB Specification 2.0 compliant; full-speed (12 Mbps) (cid:122) USB suspend states supported via SUSPEND pins Asynchronous Serial Data BUS (UART) (cid:122) All handshaking and modem interface signals (cid:122) Data formats supported: - Data bits: 5, 6, 7, and 8 - Stop bits: 1, 1.5, and 2 - Parity: odd, even, mark, space, no parity (cid:122) Baud rates: 300 bps to 1 Mbits (cid:122) 576 Byte receive buffer; 640 byte transmit buffer (cid:122) Hardware or X-On/X-Off handshaking supported (cid:122) Event character support (cid:122) Line break transmission (cid:122) Works with existing COM Port PC applications (cid:122) Royalty-free distribution license (cid:122) Windows 98 SE/2000/XP (cid:122) MAC OS-9 (cid:122) MAC OS-X (cid:122) Linux 2.40 USBXpress™ Direct Driver Support Example Applications (cid:122) Upgrade of RS-232 legacy devices to USB (cid:122) Cellular phone USB interface cable (cid:122) PDA USB interface cable (cid:122) USB to RS-232 serial adapter Supply Voltage (cid:122) Self-powered: 3.0 to 3.6 V (cid:122) USB bus powered: 4.0 to 5.25 V Package (cid:122) Lead free 28-pin QFN (5 x 5 mm) Ordering Part Number (cid:122) CP2102-GM Temperature Range: –40 to +85 °C CP2102 VDD (to external circuitry for USB suspend states) External RS-232 transceiver or UART circuitry RST SUSPEND SUSPEND RI DCD DTR DSR TXD RXD RTS CTS 9 12 11 2 1 28 27 26 25 24 23 7 6 3 8 5 4 REGIN VDD GND VBUS D- D+ USB CONNECTOR 1 2 3 GND 4 VBUS D- D+ 56 D1 D2 D3 IN Voltage Regulator OUT 3.3 V 48 MHz Oscillator USB Transceiver USB Function Controller 1024B EEPROM 640B TX Buffer 576B RX Buffer UART Figure 1. Example System Diagram Rev. 1.1 9/05 Copyright © 2005 by Silicon Laboratories CP2102 CP2102 2 Rev. 1.1 TABLE OF CONTENTS CP2102 Page Section 1. System Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4 2. Absolute Maximum Ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5 3. Global DC Electrical Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5 4. Pinout and Package Definitions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6 5. USB Function Controller and Transceiver . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11 6. Asynchronous Serial Data Bus (UART) Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12 7. Internal EEPROM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12 8. Virtual Com Port Device Drivers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13 9. USBXpress Direct Driver Support . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13 10. Voltage Regulator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13 Contact Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16 Rev. 1.1 3 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. 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. 4 Rev. 1.1 2. Absolute Maximum Ratings Table 1. Absolute Maximum Ratings CP2102 Conditions Parameter Ambient temperature under bias Storage Temperature Voltage on any I/O Pin or RST with respect to GND Voltage on VDD with respect to GND Maximum Total current through VDD and GND 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 Units °C °C V V mA mA Min –55 –65 –0.3 –0.3 — — Typ — — — — — — Max 125 150 5.8 4.2 500 100 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. 3. Global DC Electrical Characteristics Table 2. Global DC Electrical Characteristics VDD = 2.7 to 3.6 V, –40 to +85 °C unless otherwise specified. Parameter Supply Voltage Supply Current Supply Current in Suspend Specified Operating Temperature Range Conditions VDD = 3.3 V VDD = 3.3 V Min 3.0 — — –40 Typ 3.3 26 330 — Max 3.6 — — +85 Units V mA µA °C Table 3. UART and Suspend I/O DC Electrical Characteristics VDD = 2.7 to 3.6 V, –40 to +85 °C unless otherwise specified. Parameters Output High Voltage Output Low Voltage Input High Voltage Input Low Voltage Input Leakage Current Conditions IOH = –3 mA IOH = –10 µA IOH = –10 mA IOL = 8.5 mA IOL = 10 µA IOL = 25 mA Min VDD – 0.7 VDD – 0.1 — — — — 2.0 — — Typ — — VDD – 0.8 — — 1.0 — — 25 Max — — — 0.6 0.1 — — 0.8 50 UNITS V V V V µA Rev. 1.1 5
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