USB7252T/KDX

Controllers Overview

The Microchip USB7252T/KDX is a low-power, OEM-configurable USB 3.1 Gen 2 hub controller featuring four downstream ports and integrated system-level functions. It supports Super-Speed Plus (SS+) at 10 Gbps, Super-Speed (SS) at 5 Gbps, Hi-Speed (HS) at 480 Mbps, Full-Speed (FS) at 12 Mbps, and Low-Speed (LS) at 1.5 Mbps. The device includes two native Type-C ports and two Type-A ports (one USB 3.1 Gen 2, one USB 2.0). Operating voltage ranges from 1.09 V to 1.21 V for the core and 3 V to 3.6 V for I/O. It operates within an industrial temperature range of -40°C to +85°C and is housed in a 100-pin VQFN package.

Controllers Feature Summary

• Integrates Hub Feature Controller (HFC) enabling I/O Bridging via I2C, SPI, or GPIOs over USB.
• Supports FlexConnect technology allowing host port swapping and switching between two different hosts.
• Features native USB Type-C connectivity on two downstream ports with internal CC pin logic and multiplexer.
• Includes integrated battery charger detection circuitry supporting USB-IF BC1.2 profiles and legacy Apple charging.

Controllers Applications

• Embedded USB applications requiring advanced hub control
• Industrial systems needing I/O bridging capabilities
• Devices requiring flexible host/port role swapping

Controllers Procurement Notes

Verify component authenticity through authorized Microchip distributors. Confirm package integrity and lead times prior to ordering. Ensure compatibility with existing firmware configurations if utilizing OTP programming features.

Controllers Selection Notes

Select this model for designs requiring USB 3.1 Gen 2 performance combined with integrated MCU-like functionalities. Consider the 100-pin VQFN package constraints and verify thermal management requirements for industrial operating temperatures.

Controllers Part Context

The USB7252 belongs to Microchip's SmartHub family, designed to reduce system complexity by integrating hub control and peripheral interface functions into a single IC. It replaces separate hub controllers and microcontrollers in many embedded architectures.

Controllers Replacement Considerations

Check for updated revisions within the USB7252 series. Verify pin-to-pin compatibility with alternative hub controllers if sourcing from non-Microchip vendors.

Controllers FAQ

Does the USB7252 support both USB 3.1 Gen 2 and USB 2.0 simultaneously?

Yes, the SuperSpeed Plus hub controller operates in parallel with the dedicated USB 2.0 hub controller, decoupling 10 Gbps transfers from slower USB 2.0 traffic.

How is the startup configuration managed?

Configuration can be programmed into On-chip One Time Programmable (OTP) ROM using MPLAB Connect Configurator or set via external resistor bootstraps without OTP programming.