Nucleus Embedded OS Support

The MCCI® Nucleus RTOS embedded operating system support package provides compatibility, performance, flexibility, and stability to the designer of Nucleus-based USB devices.

This technology integrates the MCCI USB DataPump® with Nucleus. It supports a large number of USB device controllers and virtually any CPU that is supported by Nucleus, allowing OEMs a simple integration path to a USB-IF certified USB device stack, for either 32-bit or 64-bit systems.

When the DataPump is combined with the Nucleus support for µITRON API, this package also creates an excellent platform for developing µITRON-based platforms.

Use of the MCCI USB DataPump with Nucleus

Block diagram of using DataPump in an embedded system with Nucleus

Performance is assured by MCCI’s decades of experience in supplying this technology for a wide range of USB devices. Our leading role in the USB standards community has resulted in firmware that you can always rely on for advanced communication and to make your next design project run smoothly.


Operating systems Nucleus
Microcontroller or CPU Any supported by Nucleus
API No specific API at this level
Technical Documentation Functional Specification
Basic Delivery Format C-source
Support MCCI supports its direct customers via telephone and email. Resellers or manufacturers of products incorporating MCCI technology are responsible for supporting their own customers.
Supported MCCI Device Class Modules
  • Audio Class 1.0 and 2.0
  • Still Image Class
  • Video Class 1.1 and 1.5
  • Mass Storage Bulk-Only Transport and UAS Protocoal
  • Human Interface Device (HID) 1.1
  • Device Firmware Update (DFU) 1.1, for firmware update over USB
  • CDC (Communications Device Class) 1.1 and 1.2 Wireless Mobile Communication subclass (WMC) for multi-function 2.5G and 3G handsets
  • CDC 1.2 WMC Abstract Control Model (ACM), for traditional modems and modem emulation (more info)
  • CDC 1.2 WMC Device Management
  • CDC 1.2 WMC OBEX (Object Exchange)
  • CDC 1.2 Ethernet Control Model (ECM), for Ethernet-like networking (more info)
  • Microsoft Remote NDIS (RNDIS), for Ethernet-like networking devices, targeting PCs running Windows
  • Vendor-Specific Class (VSC), for implementing high-performance vendor-specific classes. Optional Microsoft OS descriptors simplify integration with WinUSB
  • MCCI Loopback, for test and performance evaluation
  • Networking Control Model (NCM)