Segger Microcontroller is a private company involved in the embedded systems industry. It provides products used to develop and manufacture four categories of embedded systems: real-time operating systems (RTOS) and software libraries (middleware), debugging and trace probes, programming tools (integrated development environment (IDE), compiler, linker), and 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. 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 IDE for central processing units 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 (M0, M0+, M1, M3, M4, M7, M23, M33, M85), ARM Cortex-R cores (R4, R5, R8), ARM Cortex-A cores (A5, A7, A8, A9, A12, A15, A17, A53, A72), Renesas RX, Microchip PIC32, SiLab EFM8, RISC-V.Segger J-Link Product Line It is also repackaged and sold as an OEM itemAdvertisement 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 breakpoints in flash while running on an ARM device which is typically hindered by the limited availability of hardware breakpoints.Circuit Cellar - Digital Library - New Product News
In the following table, the top group are trace devices, the bottom group are educational / hobbyist devices.
+ J-Trace & J-Link Models Model HostUSBspeed HostEthernetspeed HostWi-Fitype Targetvoltagerange Target Traceconnector(pins, pitch) Target Debugconnector(pins, pitch) Targetdownloadspeed (max) TargetVCOMUART Seggersoftwarefeatures Photo J-Trace PRO(ARM & RISC-V) None 1.2V to 5V None All J-Trace PRO Cortex-A/R/M None 1.2V to 5V None All J-Trace PRO Cortex-M None 1.2V to 5V None All J-Trace PRO RISC-V None 1.2V to 5V None All J-Link PRO PoE 2.0 HS None 1.2V to 5V None All J-Link PRO 2.0 HS None 1.2V to 5V None All J-Link ULTRA+ 2.0 HS None None 1.2V to 5V None All J-Link WiFi 2.0 HS None 1.2V to 5V None 20-pins,2.54mm(15 MHz) 1 MByte/s 2-pins(115.2K) All J-Link PLUS,J-Link PLUS Compact 2.0 HS None None 1.2V to 5V None 20-pins,2.54mm(15 MHz) 1 MByte/s 2-pins(115.2K) All J-Link BASE,J-Link BASE Compact 2.0 HS None None 1.2V to 5V None 20-pins,2.54mm(15 MHz) 1 MByte/s 2-pins(115.2K) J-Link EDU(discontinued) 2.0 HS None None 1.2V to 5V None 20-pins,2.54mm(15 MHz) 1 MByte/s 2-pins(115.2K) J-Link EDU Mini None None None None (newer models have a case) J-Link OB(on board) None None None Note: Further models are J-Link LITE ARM, J-Link LITE CortexM, J-Link LITE RX, J-Link OEM.Other J-Links; segger.com 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 male shrouded (box) header to another target board connector.J-Link adapters and isolators; segger.com 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
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