USB to I2C Adapter
Programmable SCL clock frequency from 255Hz to 3.8Mhz (20nS steps)
Supports Standard-mode, Fast-mode, Fast-mode-Plus, and High-Speed-mode
Variable bus voltage from 1.50V to 5.25V (10mV steps)
Software selectable bus pull-up resistors (16 values including open)
USB 2.0 host interface
Switched target bus voltage at connector
I2C Device Discovery Utility
Easy to use Graphical User Interface (GUI)
- Message execution status - Success / Failure w/ details
- EEPROM Programming Utility
- Programming file formats include: Binary, Intel HEX, Motorola S-record
Create custom software applications using either direct or Virtual COM Port
(VCP) drivers. Programming requires no in-depth knowledge of USB!
Includes everything needed to get started – I2C Adapter unit, I2C cable, USB
cable, and a CD-ROM containing application software and user’s manual.
Firmware debugging and hardware troubleshooting.
Equipment repair and diagnostics.
Documents and Downloads
Software Driver Links
Questions or comments? Please email or call:
or Ph: 949-716-0154
Jupiter Instruments www.jupiteri.com
Updated on 11/19/17
The JI-300 is a versatile, easy to use PC hosted adapter used to drive I2C communications
to/from a target device. The desktop unit can be configured to interface a variety of I2C
networks. Bus parameters such as clock frequency, duty-cycle, setup and hold times, bus
voltage, and pull-up resistor values can be varied. JI-300’s diagnostic features including
“excessive clock-stretch”, “bus-not-free”, and “bus contention” monitoring, as well as status
reporting at the conclusion of each message transaction simplifies I2C trouble-shooting. A
Windows software application manages the setup and control of the instrument.
Communications and unit power is provided via a USB 2.0 connection.
USB to I2C Adapter
- Single-step execution option
|Unique instrumentation products
- Data Logging - Select continuous or scheduled
Selectable SDA/SCL drive current (10mA, 20mA, or 30mA)
Examples & Videos