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Small USB-C board with loose wires attached

TRENDnet CP2112 USB-C to SMBus I2C data converter with wires

SKU CH-KRWG-EB5MK

Connects USB-C hosts to SMBus or I²C devices at up to 12 megabits per second using a CP2112 bridge with a 512-byte buffer and 194-byte OTP ROM

  • Adapter typeHDMI
  • First connectorUsb3.0_c
  • Second connectorUSB, CP2112 Adapter, usb3.0_c
  • Connector typeRJ45
  • Product typeCP2112 Adapter(TYPE-C Interface)
  • DetailsCP2112 Adapter, Dupont Line, 12 Mbit/s, usb3.0_c, 1 Year Man
  • USB-C to SMBus I²C bridge with 512-byte buffer for reliable data logging
  • Single-chip design needs no external crystal or resistor for simpler prototyping
  • 194-byte OTP ROM stores custom product IDs without extra memory chips
  • HID library API on Windows, Mac and Linux speeds application development
  • 12 Mbps SMBus clock range from 48 MHz down to 94 kHz for flexible timing

USB-C to SMBus bridge for developers

The CP2112 adapter provides a single-chip HID USB to SMBus bridge with a Type-C connector, a 512-byte data buffer and 194-byte OTP ROM for custom device information. It targets engineers building portable controllers, USB dongles or data-logging hardware who need direct I2C access from a host computer.

Replaces discrete USB-I2C dongles

The module integrates the USB transceiver and requires no external crystal or resistor, reducing board space compared with multi-chip solutions. The upgrade is worthwhile when a project needs configurable clock speeds from 48 MHz down to 94 kHz and cross-platform HID library support for Windows, Mac and Linux.

Sustained throughput at 12 megabits per second

The 512-byte buffer handles continuous SMBus traffic without host-side polling gaps, while configurable timeouts and SCL low-limit detection prevent bus lock-up during long captures. LED indicators show read and write activity so developers can verify link health in real time.

How it compares

Measured against everything we stock in Serial & Protocol Converters, at today’s prices. Recalculated every night.

Price $13.99
Cheaper than about 70% of the 121 comparable items (median $19.99).

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Specifications

Product
Brand nameTRENDnet
Product lineCP2112
Model nameCP2112
Part numberCP2112
Product typeCP2112 Adapter(TYPE-C Interface)
Adapter typeHDMI
Ports & slots
First connectorUsb3.0_c
Second connectorUSB, CP2112 Adapter, usb3.0_c
Connector typeRJ45
In the box
In the boxCP2112 Adapter, Dupont Line

Questions about this item

What connector and cable style are required to mount the CP2112 board?

The board uses a USB-C connector and ships with a USB-C cable plus two 7-pin DuPont wire sets for header connections.

Which driver step is often missed when installing the CP2112 on Windows, Mac or Linux?

Install the HID-to-SMBus library API before plugging in the module; without it the device will not enumerate as a bridge.

What on-board storage may need reprogramming if the device address or product ID changes?

The 194-byte one-time programmable ROM stores the customizable product information and slave address.

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