RATOC Systems Japan

SPI/I2C Bus Analyzer
Model: REX-USB62

The REX-USB62 is a USB-based analyzer used to monitor and analyze communication on a computer’s SPI or I2C bus. It acts as a tool for developers and engineers to capture, display, filter, and analyze data signals exchanged between a computer and a device on these serial communication buses.

Key functions and features

Bus monitoring: It can monitor and display the data flowing across SPI and I2C buses, either in a one-shot or free-running mode.
Data capture: Users can capture data based on external triggers or when specific data patterns are detected.
Data analysis: The software allows for displaying captured data, filtering it (for I2C only), searching for specific data, and saving the results.
Power supply: The device can provide a power supply (up to 100mA) to the target device and supports interface voltages of 1.8V, 2.5V, 3.3V, and 5.0V.
USB powered: It operates using power from a USB connection, meaning it doesn’t require an AC adapter

• Supported interfaces: The REX-USB62 supports both SPI and I²C communication protocols.
• Bus speed (SPI): The maximum frequency for SPI is 24 MHz in Monitor mode and 16 MHz in Analyzer mode.
• Bus speed (I²C): The maximum frequency for I²C is 1 MHz in Monitor mode and 4 MHz in Analyzer mode.
• Supported voltage: The device can operate with voltage levels of 1.8V, 2.5V, 3.3V, and 5.0V. It supports both input from the target device and output to power it. 
• Host interface: The analyzer connects to a computer via a USB 2.0 Full Speed Device interface.
• Host connector: The connector on the REX-USB62 is a USB mini B type.
• Target bus connector: The device connects to the target bus via a 2.54mm pitch 20-pin connector.
• Power supply: The REX-USB62 is powered by the USB bus. It can also supply up to 100mA of power to the target device.
• Dimensions: 58(W) x 95(D) x 18(H) mm, excluding bundled cables and rubber feet.
• Weight: Approximately 60g, excluding bundled cables.
• Supported OS: The bundled software is compatible with Windows 11, 10, 8.1, 8, and 7 (both 32-bit and 64-bit).
• Software modes: The software supports two capture modes: a Monitor mode for real-time capture and an Analyzer mode for one-shot, detailed analysis.
• Included software: The device includes bundled utility software for monitoring and analysis. 

Pic.: RATOC Systems SPI/I2C Bus Analyzer REX-USB62 at Semiki’s warehouse

Hardware specifications

Host Interface USB2.0 Full Speed Device
Connector USB mini B connector
Voltage 5V (available from USB bus power)
Consumption Current 150mA
Device Interface SPI Max frequency 24MHz (Monitor mode)
Max frequency 16MHz (Analyzer mode)
I2C Max frequency 1MHz (Monitor mode)
Max frequency 4MHz (Analyzer mode)
Power supply 1.8V(+/-5%), 2.5V(+/-5%), 3.3V(+/-5%)
5.0V(+/-5%, VBUS=5.0V)
Dimension 2.28[W] x 3.74[D] x 0.71[H] in (58[W] x 95[D] x 18[H] mm)
(Exclude the bundled cable / rubber foot)
Weight Approx. 0.212 oz (60g) (except cable)
Operating environment Temperature: 5 to 55 degrees Celsius
Humidity: 20 to 80% (non condensing)

DISTRIBUTED BY:

Semiki instrumentation Co., Ltd
Email:  sales@semiki.com
Office tel: +84 28 2253 3522

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