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  • J-Link debug probes
  • J-Mem

    J-Mem
    Display memory contents of microcontrollers

    J-Mem is a GUI application that displays memory contents of microcontrollers and allows modifications of RAM as well as special function registers while the target is running.

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    SEGGER Debug & Trace Probes
    1. 1.Licensing
    2. 2.System requirements
    3. 3.Latest news

    Overview

    J-Mem is a small stand-alone application available for Windows, macOS and Linux. J-Mem makes it possible to look into the memory of a chip at run-time using J-Link or J-Trace.

    The memory accesses can be selected to be 8, 16 or 32 bit. J-Mem works nicely when modifying SFRs, especially because it writes the SFR only after the complete value has been entered.

    JMem

    Key features

    • RAM can be modified
    • Special Function Registers (SFRs) can be written
    • Whole regions in RAM can be filled with a desired value
    • Memory sections can be saved to a .bin file
    • A periodic refresh of the displayed memory contents can be set

    Licensing

    J-Mem comes as part of the J-Link Software and Documentation Package. The software package is free for any J-Link or J-Trace device and can be downloaded here:

    DownloadJ-Link Software and Documentation Pack

    System requirements

    Supported OS
    WindowsMicrosoft Windows (x86/x64)
    macOSmacOS (x86/Apple Silicon)
    LinuxLinux (x86/x64/Arm)

    Latest news

    2025
    Sep.11
    J-Link
    J-Link and Flasher next to Geehy G33R50x chip

    SEGGER J-Link and Flasher product families now support Geehy G32R50x MCUs

    SEGGER's market-leading J-Link debug probes and Flasher in-system programmers can now be used with Geehy's G32R50x series of real-time microcontroller units (MCUs).

    [Read more...]

    All news

    • Release notes
    • Update notification
    • Pricing
    • Support
    • Silicon vendor resources
    • J-Link Prime

    全球总部

    德国: SEGGER Microcontroller GmbH

    地址: Ecolab-Allee 5
    40789 Monheim am Rhein, Germany
    电邮: info@segger.com
    电话: +49-2173-99312-0
    传真: +49-2173-99312-28

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    中国:哲戈微系统科技(上海)有限公司

    地址: 中国上海市闵行区秀涟路133号
    大虹桥国际A 栋218室
    邮编201199
    电邮: china@segger.com
    电话: +86-133-619-907-60


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    30多年的嵌入式行业经验

    First-class embedded software tools since 1992
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