I2C Tools USB-TO-I2C Elite Package I2C SPI GPIO Host Programmer Adapter

Description

The USB to I2C Elite hardware connects to a standard USB port found on most PCs and provides bi-directional communication with I²C devices using the I²C protocol. The hardware is powered directly from the PC’s USB port.
USB to I2C Elite is a general purpose I2C interface tool that allows a user to communicate with any I2C slave device. USB-to-I2C Elite includes the USB-based hardware and Windows downloadable software which is compatible with Windows XP, Vista, Windows 7,  8, and Windows 10. Windows drivers are available for 64-bit operating systems.
Download their Ultra/Elite/Pro Software Manual to view I2C Device part numbers which are supported.
The downloadable software has the capability to program I2C serial EEPROMs from 16 bytes (128 bits) to 512k bits (64k bytes). Two universal modes provide the flexibility to communicate with any I2C device. In addition to the EEPROM/RAM/FRAM support, the USB-to-I2C application has built in support for over 72 specific I2C devices (see description below) which is useful for debugging hardware containing these common devices. The SPI software can be used for EEPROMs, as well as most other SPI devices.
The I2C hardware is capable of transmitting up to 1 Mb/s (note the I2C spec limits the speed to 400 Kb/s) and SPI up to 30 Mb/s. There are 3.3V and 5V power outputs on the USB-to-I2C hardware allowing you to power low-power target systems.
The level translator board connects to the adapter and allows use with low voltage devices below 3.3V to 0.9V
The adapter was tested using Universal Device mode and a crude device definition was created for the AD5254 since it was not supported as a built-in device.  I could have created slider controls for the resistance value of the registers or bit mode, or incremental controls.  The software is very useful.
SPI Mode was not tested. I don't have a SPI target.
My return policy is the item must be returned within ten days of delivery.