STMicroelectronics P-NUCLEO-USB001

Overview

P-NUCLEO-USB001 from STMicroelectronics is a USB Type-C™ and Power Delivery development pack comprising the NUCLEO-F072RB MCU board and MB1257 USB-C expansion board. It enables dual-port DRP (Dual-Role Port) configuration using an STM32F072RBT6 Cortex-M0 microcontroller, supports USB 2.0 FS peripheral mode on Port 0, integrates VBUS load/discharge and VCONN switches, and provides voltage/current sensing for real-time PD policy management in embedded USB-C systems.

For engineers reviewing the P-NUCLEO-USB001 datasheet, P-NUCLEO-USB001 pinout, P-NUCLEO-USB001 application, or P-NUCLEO-USB001 equivalent, this kit delivers certified X-CUBE-USB-PD stack support for USB Type-C 1.2 and Power Delivery 2.0 compliance testing, CC line analog front-end PHY interfacing, dead-battery management, and configurable provider/consumer/DRP role implementation without external host controller dependency.

Technical Context

The system separates control (NUCLEO-F072RB) and interface (MB1257) functions: the STM32F072RBT6 executes the X-CUBE-USB-PD stack with dedicated firmware handling Policy Engine, Protocol Layer (BMC encoding, SOP tokens, CRC), and Physical Layer signaling via discrete analog CC AFE circuitry. All USB-C port management-including Rp/Rd termination, VCONN switching, VBUS discharge timing, and current/voltage monitoring-is performed through GPIO-controlled MOSFETs and analog sensing paths routed to ADC inputs.

MB1257 implements two fully independent USB Type-C™ receptacles with EMI filtering, dead-battery wake-up capability, and on-board power management generating internal 3.3 V and 5 V rails. The expansion board connects to the NUCLEO-F072RB via ST morpho headers, exposing all required CC, VBUS, VCONN, and sense signals-no additional level-shifting or signal conditioning is needed for basic PD negotiation.

Key Specifications

Availability

P-NUCLEO-USB001 is available at Aetrix Electronics and suitable for USB-C PD reference design validation, embedded firmware stack integration, and dual-port DRP prototyping requiring stable component supply, traceable sourcing, and lifecycle continuity.

Supply support for P-NUCLEO-USB001 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

STMicroelectronics is a global semiconductor leader headquartered in Geneva, Switzerland, designing and manufacturing microcontrollers, analog ICs, power devices, and sensors for industrial, automotive, and consumer applications.

The STM32 Nucleo series targets rapid prototyping and evaluation of STM32 MCUs, with P-NUCLEO-USB001 specifically engineered to accelerate USB Type-C™ and Power Delivery system development using certified software stacks and hardware-ready expansion boards.

FAQ

Does P-NUCLEO-USB001 include the X-CUBE-USB-PD software stack?

Yes. The P-NUCLEO-USB001 pack ships with pre-certified X-CUBE-USB-PD firmware compliant with USB Type-C 1.2 and Power Delivery 2.0 specifications. The stack runs on the included NUCLEO-F072RB board and supports full Policy Engine, Protocol Layer, and Physical Layer operations including BMC decoding, SOP token handling, and VDM command exchange without modification.

Can both USB-C ports operate simultaneously as providers or consumers?

Yes. The dual-port DRP configuration allows independent role assignment per port via firmware control. Each port's Rp/Rd termination, VBUS switching, and VCONN routing are separately managed by the STM32F072RBT6, enabling simultaneous provider/consumer operation-for example, one port sourcing 20 V/3 A while the other sinks 5 V/1.5 A-subject to external power supply capability and board-level thermal limits.

Is external power required to use VCONN on both ports?

Yes. VCONN must be supplied externally via the dedicated 5 V power connector on MB1257. The board does not generate VCONN from USB VBUS or MCU rails. This ensures stable 5 V ±5 % delivery to cable electronics during active PD negotiation, meeting USB Type-C™ specification requirements for VCONN current up to 1 W per port.

What debug interfaces are supported on the NUCLEO-F072RB board included in this pack?

The NUCLEO-F072RB features an integrated ST-LINK/V2-1 debugger/programmer with SWD interface. It supports programming, real-time debugging, and virtual COM port bridging. A mode switch allows reconfiguration as a standalone ST-LINK/V2-1 for use with other target boards, retaining full SWD/JTAG functionality and USB CDC serial communication capability.