CP2102-GMR Silicon Laboratories Inc, CP2102-GMR Datasheet - Page 12

• Manufacturer Part Number: CP2102-GMR
• Description: USB to UART Bridge 28-Pin QFN T/R
• Manufacturer: Silicon Laboratories Inc

Specifications of CP2102-GMR

• Package: 28QFN
• Operating Temperature: -40 to 85 °C
• Applications: USB
• Interface: UART
• Voltage - Supply: 3 V ~ 3.6 V
• Package / Case: 28-VQFN Exposed Pad, 28-HVQFN, 28-SQFN, 28-DHVQFN
• Mounting Type: Surface Mount
• Maximum Operating Temperature: + 125 C
• Minimum Operating Temperature: - 55 C
• Mounting Style: SMD/SMT
• Operating Supply Voltage: 3.6 V
• Supply Current (max): 100 mA
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: 336-1161 - KIT EVALUATION FOR CP2102
• Lead Free Status / Rohs Status: Details
• Other names: 336-1802-2; CP2102-GMR; Q4435029

CP2102
5. Asynchronous Serial Data Bus (UART) Interface
The CP2102 UART interface consists of the TX (transmit) and RX (receive) data signals as well as the RTS, CTS,
DSR, DTR, DCD, and RI control signals. The UART supports RTS/CTS, DSR/DTR, and X-On/X-Off handshaking.
The UART is programmable to support a variety of data formats and baud rates. If the Virtual COM Port drivers are
used, the data format and baud rate are set during COM port configuration on the PC. If the USBXpress drivers are
used, the CP2102 is configured through the USBXpress API. The data formats and baud rates available are listed
in Table 8.
6. Internal EEPROM
The CP2102 includes an internal EEPROM that may be used to customize the USB Vendor ID (VID), Product ID
(PID), Product Description String, Power Descriptor, Device Release Number and Device Serial Number as
desired for OEM applications. If the EEPROM is not programmed with OEM data, the default configuration data
shown in Table 9 is used.
While customization of the USB configuration data is optional, it is recommended to customize the VID/PID
combination. A unique VID/PID combination will prevent the driver from conflicting with any other USB driver. A
vendor ID can be obtained from
product that can be used with the Silicon Laboratories VID. It is also recommended to customize the serial number
if the OEM application is one in which it is possible for multiple CP2102-based devices to be connected to the
same PC.
The internal EEPROM is programmed via the USB. This allows the OEM's USB configuration data and serial
number to be written to the CP2102 on-board during the manufacturing and testing process. A stand-alone utility
for programming the internal EEPROM is available from Silicon Laboratories. A library of routines provided in the
form of a Windows
into custom software used by the OEM to streamline testing and serial number management during manufacturing.
The EEPROM has a typical endurance of 100,000 write cycles with a data retention of 100 years.
USB descriptors can be locked to prevent future modification.
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Notes:
Baud Rates
Parity Type None, Even, Odd, Mark, Space
Stop Bits
Data Bits
1. 5-bit only.
2. Additional baud rates are supported. See “AN205”.
3. 7 or 8 data bits only.
2
®
5, 6, 7, and 8
1, 1.5
300, 600, 1200, 1800, 2400, 4000, 4800, 7200, 9600, 14400, 16000, 19200, 28800,
38400, 51200, 56000, 57600, 64000, 76800, 115200, 128000, 153600, 230400, 250000,
256000, 460800, 500000, 576000, 921600
DLL is also available. This library can be used to integrate the EEPROM programming step
1
, and 2
http://www.usb.org/
Table 8. Data Formats and Baud Rates
Rev. 1.4
or Silicon Laboratories can provide a free PID for the OEM
3