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



Description バージョン サイズ
DB2538 DB2538: STM32 SMBus / PMBus™ embedded software expansion for STM32Cube 2.0 123 KB
Description バージョン サイズ
AN4502 AN4502: STM32 SMBus / PMBus™ embedded software expansion for STM32Cube 2.0 1 MB
Description バージョン サイズ
UM2312 UM2312: Development checklist for STM32Cube Expansion Packages 1.0 283 KB
UM2285 UM2285: Development guidelines for STM32Cube Expansion Packages 1.0 485 KB

プレゼンテーション & トレーニング資料

Description バージョン サイズ
STM32 and STM8 embedded software solutions 6.0 2 MB

Publications and Collaterals

Description バージョン サイズ
STM32 Open Development Environment Brochure 15.10 1 MB


Description バージョン サイズ
SLA0048 SLA0048: Mix Ultimate Liberty+OSS+3rd-party V1 - SOFTWARE LICENSE AGREEMENT 4.9 86 KB

ツール & ソフトウェア

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製品型番 Software Version Marketing Status Supplier Order from ST
X-CUBE-SMBUS 2.0.2 Active ST