KNX

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KNX is the the worldwide standard for all applications in home and building control, ranging from lighting and shutter control to various security systems, heating, ventilation, air conditioning, monitoring, alarming, water control, energy management, smart metering as well as household appliances, audio/video and lots more.

STM – KNX solutions

  • STKNX – Miniature KNX transceiver with voltage regulators
    • Key Features
      • Very thin fine pitch 4 x 4 mm VQFNPN24 package
      • KNX certified, KNX TP1-256 supported
      • Easy interface to μC
      • Very small system solution
      • Two integrated voltage regulators for external use in application
        • Selectable 3.3 V / 5 V – 20 mA linear regulator
        • Adjustable 1 V to 12 V – 150 mA high- efficiency DC/DC step down switching converter
      • KNX bus power extractor supporting bus current up to 30 mA
      • Adjustable KNX bus current slew rate dI/dt
      • No crystal required
      • Operating temperature range -40 °C to +85 °C
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      • STKNX Twisted Pair Transceiver presentation
      • Application – STKNX chipset for building automation system

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    • EVALKITSTKNX eval board for STKNX based on STM32F103
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    • EVALKITSTKNX presentation
      • Key Features
        • Full KNX twisted pair device development kit based on the STKNX miniature transceiver
        • Controlled by STM32F103 microcontroller 32-bit Cortex® -M3 – 16 MHz – 128 kB Flash
        • Twisted pair TP1-256 support
        • Compatible with ETS engineering tool software
        • Test firmware already downloaded in the board to demonstrate features
        • Includes originally TAPKO KNX protocol stack KAIstack
        • Supported development environments: AC6 OpenSTM32 (Linux® , Windows® and Mac OS-X) or Atollic TrueSTUDIO® (Linux and Windows)
        • JTAG debug through isolated USB host interface (ST-LINK/V2-1 on-board)
        • Standard serial wire debug (SWD) and JTAG interfaces available on standard HE10 20-pin connector
        • Connectors for extension board compatible with Arduino™ and ST Morpho standards
        • UART through isolated USB host interface for connecting a PC
        • No external supply needed during SW development in “desktop mode” (KNX disconnected), USB supply only
        • Power supply flexibility exploiting whole supplies options offered by STKNX
        • 1 button and 1 LED for KNX programming
        • 4 buttons and 4 LEDs for basic KNX sensors and actuators emulation
        • Optional 32.768 kHz crystal for RTC mode
        • Optional CPU reset control from STKNX
        • STKNX area routed on 2 PCB layers only, for reference layout
        • Compliant with bus family standard EN 50491
        • Complete reference design suitable to implement products compatibles with KNX standards:
          • CENELEC EN 50090 (EU HBES)
          • CEN EN 13321-1/2 (EU BA)
          • ISO/IEC 14543-3 (World HES)
          • GB/T 20965 (Chinese HBC)
          • ANSI/ASHRAE Standard 135 (USA)
        • Includes optional isolation mode for developing SELV product according to EN 61140
        • Operating temperature range -40 °C to +85 °C
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      • Quick Start Guide EVALKITSTKNX v1.4
      • KNX presentation, April 2019