CP2102

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, including 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 EEPROM is programmed on-board via the USB allowing the programming step to be easily integrated into the product manufacturing and testing process. 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. 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.

The features of CP2102 can be summarized as (1)ambient temperature under bias; -55 to 125 °C; (2)storage temperature 65 - 150 °C; (3)voltage on any I/O Pin or RST with respect to GND: 0.3 - 5.8 V; (4)voltage on VDD with respect to GND: 0.3 to 4.2 V; (5)maximum total current through VDD and GND: 500 mA; (6)maximum output current sunk by RST or any I/O pin: 100mA( Stresses above those listed may cause permanent damage to the device. This is a stress rating only, and functional 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.).

The absolute maximum ratings of CP2102 are (1)single-chip USB to UART data transfer:integrated USB transceiver; no external resistors required; (2)integrated clock; no external crystal required; (3)integrated 1024-Byte EEPROM for vendor ID, product ID, serial number, power descriptor, release number, and product description strings; (4)on-chip power-on reset circuit; (5)on-chip voltage regulator: 33 V output; (6)100% pin and software compatible with CP2101; (7)USB function controller: USB specification 20 compliant; full-speed (12 Mbps); USB suspend states supported via SUSPEND pins; (8)asynchronous serial data BUS (UART): all handshaking and modem interface signals; Data formats supported: data bits: 5, 6, 7, and 8; stop bits: 1, 15, and 2; Parity: odd, even, mark, space, no parity; (9)baud rates: 300 bps to 1 Mbits; (10)576 Byte receive buffer; 640 byte transmit buffer; (11)hardware or X-On/X-off handshaking supported; (12)event character support ; (13)line break transmission; (14)virtual COM port device drivers: works with existing COM port PC applications; royalty-free distribution license; windows 98 SE/2000/XP; MAC OS-9; MAC OS-X; linux 240; (15)usbxpress? direct driver support; (16)example applications: upgrade of RS-232 legacy devices to USB; cellular phone USB interface cable; PDA USB interface cable; USB to RS-232 serial adapter; (17)supply voltage: self-powered: 30 to 36 V; USB bus powered: 40 to 525 V; (18)package: lead free 28-pin QFN (5 x 5 mm); (19)ordering part number: CP2102-GM; (20)temperature range: 40 to +85 °C.