STM32Cube SMBus/PMBus embedded software (AN4502)

X-CUBE-SMBUS software package contains SMBus/PMBus stack implementation for STM32Cube.

The SMBus stack is built on STM32Cube HAL drivers to implement the transport layer. The middleware also includes the template for further expansion and personalization of PMBus support.

Strict usage of the STM32Cube ensures high portability to other microcontrollers of the STM32 family.

The package comes with an example and basic functionality tests intended for below boards: 32F072BDISCOVERY, 32L0538DISCOVERY, 32L476GDISCOVERY and STM32F3DISCOVERY.

Key Features

  • SMBus 3.0 transfers:
    • Quick command
    • Read/Write byte/word
    • Block transfers
    • Process call
    • Zone commands
  • PMBus 1.3.1 support:
    • Group command
    • Extended command
  • Notable features:
    • Alert signal and response
    • Address resolution protocol
    • Packet error checking
    • Host notification protocol
    • Up to 1 MHz speed tested


Technical Documentation

Product Specifications
Description Version Size
STM32 SMBus / PMBus™ embedded software expansion for STM32Cube 2.0 123 KB
Application Notes
Description Version Size
STM32 SMBus / PMBus™ embedded software expansion for STM32Cube 2.0 1 MB
User Manuals
Description Version Size
Development checklist for STM32Cube Expansion Packages 1.0 283 KB
Development guidelines for STM32Cube Expansion Packages 1.0 485 KB

Publications and Collaterals

Description Version Size
STM32 Open Development Environment Brochure 15.10 4 MB


License Agreement
Description Version Size
Mix Ultimate Liberty+OSS+3rd-party V1 - SOFTWARE LICENSE AGREEMENT 3.1 104 KB

Tools and Software

Embedded Software
MCUs Embedded Software
Evaluation Tools
Product Evaluation Tools

Get Software

Part Number Software Version Marketing Status Supplier Order from ST
X-CUBE-SMBUS 2.0.1 Active ST


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