View source for Segger Microcontroller Systems

{{redirect|Segger}}
{{Short description|Private company in the embedded systems industry}}
{{More citations needed|date=January 2022}}
{{Infobox company
|name = Segger Microcontroller
|logo = SEGGER-Logo-the-embedded-experts-RGB.svg
|type = [[Gesellschaft mit beschränkter Haftung|GmbH]]
|foundation = {{Start date and age|1992}}
|location = [[Monheim am Rhein]], Germany
|industry = [[Embedded software]]
|products = [[Middleware]] components, [[JTAG]] development tools
|website = {{URL|www.segger.com}}
}}

'''Segger Microcontroller''' is a private company involved in the [[embedded system]]s industry.<ref name="Segger-Home">{{cite web |title=Home Page |url=https://www.segger.com/ |website=Segger |archive-url=https://web.archive.org/web/20241206190353/https://www.segger.com/ |archive-date=December 6, 2024 |url-status=live}}</ref>  It provides products used to develop and manufacture four categories of embedded systems: [[real-time operating system]]s (RTOS) and software [[Library (computing)|libraries]] ([[middleware]]), [[debugging]] and [[Stack trace|trace]] probes, [[programming tool]]s ([[integrated development environment]] (IDE), [[compiler]], [[Linker (computing)|linker]]), and [[In-system programming|in-system programmers]] (Flasher line of products). The company is headquartered in [[Monheim am Rhein]], Germany, with remote offices in [[Gardner, Massachusetts]]; [[Milpitas, California]]; and [[Shanghai]], China.

==History==
Segger Microcontroller was founded in 1992 by Rolf Segger in [[Hilden]], Germany.<ref name="Segger-About-Company">{{cite web |title=About Us - The Company |url=https://www.segger.com/about-us/the-company/ |website=Segger |archive-url=https://web.archive.org/web/20241206190958/https://www.segger.com/about-us/the-company/ |archive-date=December 6, 2024 |url-status=live}}</ref>  The first product was the [[real-time operating system]] (RTOS), now named embOS. It was followed by emWin two years later. Initial products focused on RTOS and [[middleware]] products. However, the company later produced ISP-programming tools (Flasher) and debug probes (J-Link). In 2015, Segger introduced Embedded Studio, their [[Cross-platform software|cross-platform]] IDE for [[central processing unit]]s conforming to the [[ARM architecture]], though recent versions are also used by [[RISC-V]]. All products are developed, maintained and updated in Germany except for Embedded Studio, which is primarily developed by a team of developers in the [[United Kingdom]].

==Product categories==
===Debug and trace probes===
Segger is most noted for its J-Link family, which supports [[JTAG]] (Joint Test Action Group) and SWD (Serial Wire Debug) debug probes for microcontrollers that have older ARM cores ([[ARM7]], [[ARM9]], [[ARM11]]), ARM Cortex-M cores ([[ARM Cortex-M0|M0]], [[ARM Cortex-M0+|M0+]], [[ARM Cortex-M1|M1]], [[ARM Cortex-M3|M3]], [[ARM Cortex-M4|M4]], [[ARM Cortex-M7|M7]], [[ARM Cortex-M23|M23]], [[ARM Cortex-M33|M33]], M85), ARM Cortex-R cores ([[ARM Cortex-R4|R4]], [[ARM Cortex-R5|R5]], [[ARM Cortex-R8|R8]]), ARM Cortex-A cores ([[ARM Cortex-A5|A5]], [[ARM Cortex-A7|A7]], [[ARM Cortex-A8|A8]], [[ARM Cortex-A9|A9]], [[ARM Cortex-A12|A12]], [[ARM Cortex-A15|A15]], [[ARM Cortex-A17|A17]], A53, A72), [[Renesas RX]], Microchip [[PIC32]], [[Silicon Labs|SiLab]] EFM8, [[RISC-V]].<ref>[http://www.segger.com/cms/development-tools.html Segger J-Link Product Line]</ref> It is also repackaged and sold as an OEM item<ref>[http://www.edn.com/article/CA6301710.html Advertisement<!-- Bot generated title -->]</ref> by [[Analog Devices]] as the mIDASLink, [[Atmel]] as the SAM-ICE, [[Digi International]] as the Digi JTAG Link, and [[IAR Systems]] as the J-Link and the J-Link KS. This is the only JTAG emulator that can add Segger's patented flash breakpoint software to a debugger to enable the setting of multiple [[breakpoint]]s in flash while running on an ARM device which is typically hindered by the limited availability of hardware breakpoints.<ref>[http://www.circuitcellar.com/library/newproducts/180/segger.htm Circuit Cellar - Digital Library - New Product News<!-- Bot generated title -->] {{webarchive|url=https://web.archive.org/web/20070311133130/http://www.circuitcellar.com/library/newproducts/180/segger.htm |date=2007-03-11 }}</ref>

In the following table, the top group are trace devices, the bottom group are educational / hobbyist devices.

{| class="wikitable nounderlines sortable" style="text-align: center;"
|+ <big>J-Trace & J-Link Models</big><ref>{{cite web |title=J-Trace Products |url=https://www.segger.com/products/debug-probes/j-trace/ |website=Segger Microcontroller Systems |archive-url=https://web.archive.org/web/20241007101418/https://www.segger.com/products/debug-probes/j-trace/ |archive-date=October 7, 2024 |url-status=live}}</ref><ref>{{cite web |title=J-Link Products |url=https://www.segger.com/products/debug-probes/j-link/ |website=Segger Microcontroller Systems |archive-url=https://web.archive.org/web/20241112024425/https://www.segger.com/products/debug-probes/j-link/ |archive-date=November 12, 2024 |url-status=live}}</ref>
|-
! Model !! Host<br/>[[USB#Release_versions|USB]]<br />speed !! Host<br/>[[Ethernet physical layer|Ethernet]]<br />speed !! Host<br/>[[Wi-Fi#Versions_and_generations|Wi-Fi]]<br/>type !! Target<br/>[[volt]]age<br/>range !! Target Trace<br />[[Pin header|connector]]<br />(pins, pitch) !! Target Debug<br/>[[Pin header|connector]]<br />(pins, pitch) !! Target<br />download<br />speed (max) !! Target<br />[[Virtual COM port|VCOM]]<br />[[Universal asynchronous receiver-transmitter|UART]] !! Segger<br/>software<br/>features !! Photo<br />&nbsp;<br />&nbsp;
|-
| style="text-align:left" | J-Trace PRO<br/>(''ARM & RISC-V'') || {{yes|3.0 [[USB#Release_versions|SS]]}} || {{yes|1 [[Gbit/s]]}} || None || 1.2V to 5V || {{yes|19-pins,<br/>1.27mm<br/>(150&nbsp;[[MHz]])}} || {{yes|20-pins,<br/>2.54mm<br/>(50&nbsp;[[MHz]])}} || {{yes|4 [[MByte]]/s}} || None || All || {{sp}}
|-
| style="text-align:left" | J-Trace PRO Cortex-A/R/M || {{yes|3.0 SS}} || {{yes|1 Gbit/s}} || None || 1.2V to 5V || {{yes|19-pins,<br/>1.27mm<br/>(150&nbsp;MHz)}} || {{yes|20-pins,<br/>2.54mm<br/>(50&nbsp;MHz)}} || {{yes|4 MByte/s}} || None || All || [[File:J-Trace Cortex-ARM 1349x1466 230627.png|95px]]
|-
| style="text-align:left" | J-Trace PRO Cortex-M || {{yes|3.0 SS}} || {{yes|1 Gbit/s}} || None || 1.2V to 5V || {{yes|19-pins,<br/>1.27mm<br/>(150&nbsp;MHz)}} || {{yes|20-pins,<br/>2.54mm<br/>(50&nbsp;MHz)}} || {{yes|4 MByte/s}} || None || All || [[File:J-Trace Cortex-M 1349x1466.png|95px]]
|-
| style="text-align:left" | J-Trace PRO RISC-V || {{yes|3.0 SS}} || {{yes|1 Gbit/s}} || None || 1.2V to 5V || {{yes|19-pins,<br/>1.27mm<br/>(150&nbsp;MHz)}} || {{yes|20-pins,<br/>2.54mm<br/>(50&nbsp;MHz)}} || {{yes|4 MByte/s}} || None || All || [[File:J-Trace RISC-V 1349x1466.png|95px]]
|-
| style="background: black;" | {{sp}} || style="background: black;" | {{sp}} || style="background: black;" | {{sp}} || style="background: black;" | {{sp}} || style="background: black;" | {{sp}} || style="background: black;" | {{sp}} || style="background: black;" | {{sp}} || style="background: black;" | {{sp}} || style="background: black;" | {{sp}} || style="background: black;" | {{sp}} || style="background: black;" | {{sp}} <!-- NOTE - grouping divider -->
|-
| style="text-align:left" | J-Link PRO [[Power over Ethernet|PoE]] || 2.0 [[USB#Release_versions|HS]] || {{yes|100 [[Mbit/s]]<br/>([[Power over Ethernet|PoE]])}} || None || 1.2V to 5V || None || {{yes|20-pins,<br/>2.54mm<br/>(50&nbsp;MHz)}} || {{yes|4 MByte/s}} || {{yes|2-pins<br/>([[Baud|10M]])}} || All || {{sp}}
|-
| style="text-align:left" | J-Link PRO || 2.0 HS || {{yes|100 Mbit/s}} || None || 1.2V to 5V || None || {{yes|20-pins,<br/>2.54mm<br/>(50&nbsp;MHz)}} || {{yes|4 MByte/s}} || {{yes|2-pins<br/>(10M)}} || All || [[File:J-Link PRO 1349x1466.png|95px]]
|-
| style="text-align:left" | J-Link ULTRA+ || 2.0 HS || None || None || 1.2V to 5V || None || {{yes|20-pins,<br/>2.54mm<br/>(50&nbsp;MHz)}} || {{yes|4 MByte/s}} || {{yes|2-pins<br/>(10M)}} || All || [[File:J-Link ULTRA-PLUS 1349x1466.png|95px]]
|-
| style="text-align:left" | J-Link [[WiFi]] || 2.0 HS || None || {{yes|802.11b/g/n<br/>(2.4[[GHz]])}} || 1.2V to 5V || None || 20-pins,<br/>2.54mm<br/>(15&nbsp;[[MHz]]) || 1 [[MByte]]/s || 2-pins<br/>([[Baud|115.2K]]) || All || [[File:J-Link Wifi 1349x1466.png|95px]]
|-
| style="text-align:left" | J-Link PLUS,<br/>J-Link PLUS Compact || 2.0 HS || None || None || 1.2V to 5V || None || 20-pins,<br/>2.54mm<br/>(15&nbsp;MHz) || 1 MByte/s || 2-pins<br/>(115.2K) || All || [[File:J-Link PLUS Classic 1349x1466.png|95px]] [[File:J-Link PLUS-Compact 1349x1466.png|95px]]
|-
| style="text-align:left" | J-Link BASE,<br/>J-Link BASE Compact || 2.0 HS || None || None || 1.2V to 5V || None || 20-pins,<br/>2.54mm<br/>(15&nbsp;MHz) || 1 MByte/s || 2-pins<br/>(115.2K) || {{maybe|Limited}} || [[File:J-Link BASE Classic 1349x1466.png|95px]] [[File:J-Link BASE-Compact 1349x1466.png|95px]]
|-
| style="background: black;" | {{sp}} || style="background: black;" | {{sp}} || style="background: black;" | {{sp}} || style="background: black;" | {{sp}} || style="background: black;" | {{sp}} || style="background: black;" | {{sp}} || style="background: black;" | {{sp}} || style="background: black;" | {{sp}} || style="background: black;" | {{sp}} || style="background: black;" | {{sp}} || style="background: black;" | {{sp}} <!-- NOTE - grouping divider -->
|-
| style="text-align:left; background: #FFE3E3; color: black" | J-Link EDU<br/>('''discontinued''') || 2.0 HS || None || None || 1.2V to 5V || None || 20-pins,<br/>2.54mm<br/>(15&nbsp;MHz) || 1 MByte/s || 2-pins<br/>(115.2K) || {{maybe|Limited}} || [[File:J-Link EDU 1349x1466.png|95px]]
|-
| style="text-align:left" | J-Link EDU Mini || {{maybe|2.0 [[USB#Release_versions|FS]]}} || None || None || {{maybe|1.8V to 3.3V,<br/>3.3V-only for<br/>older models}} || None || {{maybe|9-pins,<br/>1.27mm<br/>(4&nbsp;[[MHz]])}} || {{maybe|0.2 [[MByte]]/s}} || None || {{maybe|Limited}} || [[File:J-Link EDU-mini 1349x1466.png|95px]]<br/>(newer models have a case)
|-
| style="text-align:left" | J-Link OB<br/>(''on board'') || {{maybe|2.0 FS}} || None || None || {{maybe|Depends}} || None || {{maybe|Integrated<br/>on dev board<br/>(2 to 4&nbsp;MHz)}} || {{maybe|0.1 to 0.2<br/>MByte/s}} || {{maybe|Depends}} || {{maybe|Limited}} || 
|}
* Note: Further models are J-Link LITE ARM, J-Link LITE CortexM, J-Link LITE RX, J-Link OEM.<ref>[http://www.segger.com/other-j-links.html Other J-Links; segger.com]</ref>
* Note: Software options vary by model: J-Flash, J-Flash-SPI, Ozone, RDDI, RDI, Unlimited Flash Breakponts.
* Note: The EDU & EDU Mini models cannot be used for commercial software development, also doesn't come with J-Flash, J-Flash-SPI, RDDI, RDI options.
* Note: Adapters and isolators are available to convert the 20-pin 0.1"/2.54mm [[Pin header|male shrouded (box) header]] to another target board connector.<ref>[http://www.segger.com/jlink-adapters.html J-Link adapters and isolators; segger.com]</ref>
* Note: The compact variants are functionally identical to their larger variants.

==See also==
* [[Embedded system]]
* [[Single-board microcontroller]]
* [[List of ARM microprocessor cores]]
* [[GNU Debugger]]

==References==
{{Reflist}}

==External links==
{{Commons category|Segger}}
* {{Official website|www.segger.com}}

{{ARM-based chips}}
{{Microcontrollers}}
{{Real-time operating systems}}

[[Category:German companies established in 1992]]
[[Category:Companies based in North Rhine-Westphalia]]