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Silicon Labs CP21xx Smart Interface Connectivity Bridges
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The Silicon Labs CP2104, CP2105, CP2110, and CP2112
connectivity bridges are the latest additions to Silicon Labs’
industry-leading Smart Interface family. The Silicon Labs
CP21xx family of devices extends the Smart Interface
portfolio to include cost-sensitive USB to UART (CP2104),
USB to Dual UART (CP2105), USB HID (Human Interface Design) Class USB to
UART (CP2110), and USB HID Class to SMBUS / I²C bridge
(CP2112) solutions. Common to the Silicon Labs CP2104, CP2105, CP2110,
and CP2112 connectivity bridges are royalty-free software
driver suites, crystal-less operation, in-system programming memory,
and small 4 mm x 4 mm packages that in combination reduce cost, simplify
design, and shorten development time. Example applications include USB to RS-232 converters, USB to Dual RS-232 converters, upgrades of legacy RS-232 devices, and industrial connectivity devices. CP21xxEK evaluation kits
allow for complete evaluation and customization of these devices.
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CP2104 Features
- Single-Chip USB to UART Data Transfer
- USB Function Controller
- Asynchronous Serial Data BUS (UART)
- Virtual COM Port Device Drivers
- USBXpress™ Direct Driver Support
CP2105 Features
- Single-Chip USB to Dual UART Data Transfer
- USB Peripheral Function Controller
- Two UART Interfaces (“Enhanced” and “Standard”)
- Virtual COM Port Device Drivers
- USBXpress™ Direct Driver Support
| CP2110 Features
- Single-Chip USB HID-Class to UART Data Transfer
- USB Peripheral Function Controller
- HID Interface
- Enhanced UART Interface Features
- 10 GPIO Pins with Configurable Options
CP2112 Features
- Single-Chip USB HID-Class to SMBus Master Bridge
- USB Peripheral Function Controller
- HID Interface
- Enhanced SMBUS Configuration Options
- 8 GPIO Pins with COnfigurable Options
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CP21xx Product Specifications| Part Number | Description | EEPROM (Bytes) | RAM (Bytes) | Digital Port I/O Pins | Serial Buses |
| CP2104 | UART to USB Bridge | 1024 | 1152 | 4 | UART, USB 2.0 |
| CP2105 | UART to Dual USB Bridge | 296 | 608 | _ | UART, USB 2.0 |
| CP2110 | HID-Class USB to UART Bridge | 343 | 960 | 10 | UART, USB 2.0 |
| CP2112 | HID-Class USB to SMBus Bridge | 194 | 512 | 8 | USB 2.0, SMBus |
Silicon Labs CP21xx-EK Evaluation KitsCP2104EK BoardThe CP2104EK evaluation kit allows for a complete evaluation and customization of the CP2104 USB to UART bridge, including all GPIO functions, flow control, RS485 transceiver control, and Transmit and Receive LEDs. Windows, Mac, and Linux drivers as well as a USB and serial cable are included. |  | CP2105EK BoardThe CP2105EK evaluation kit allows for a complete evaluation and customization of the CP2105 USB to Dual UART bridge, including flow control, RS485 transceiver control, and Transmit and Receive LEDs. Windows, Mac, and Linux drivers as well as a USB and serial cable are included. |  | CP2110EK BoardThe CP2110EK evaluation kit allows a complete evaluation and customization of the CP2110 HID USB to UART bridge, including all GPIO functions, flow control, RS485 transceiver control, Transmit and Receive LEDs, and clock output. Windows and MAC applications examples as well as a USB and serial cable are included. |  | CP2112EK boardThe CP2112EK evaluation kit allows a complete evaluation and customization of the CP2112 HID USB to SMBUS Bridge, including all GPIO functions, Transmit LEDs, Receive LEDs, and clock output. Windows and MAC applications examples as well as a USB cable are included. |  |
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