J-Link OB ARM Debugger and Programmer
₹612.42 incl. GST (₹519.00 + GST)
The J-Link OB ARM Debugger and Programmer is a compact USB-based tool designed for programming and debugging compatible ARM microcontrollers. It features a Micro USB interface, 3.3V output, 4-pin connection, onboard self-recovery fuse, and compact 22.5 × 43.2mm design. Suitable for STM32 development, embedded firmware debugging, electronics prototyping, robotics, and ARM-based microcontroller projects.
The J-Link OB ARM Debugger and Programmer is a compact USB-based debugging and programming tool designed for ARM microcontroller development, embedded firmware testing, and software troubleshooting. It provides an interface between a computer and compatible ARM-based microcontrollers, allowing developers to program firmware, inspect execution, and diagnose software errors.
Designed for embedded system developers, electronics engineers, students, and researchers, the J-Link OB Debugger offers a convenient solution for programming and debugging supported ARM microcontrollers. It is suitable for firmware development, hardware testing, embedded system prototyping, and educational applications.
The module features a Micro USB interface, 3.3V output, 4-pin connection, and onboard self-recovery fuse for additional protection against short circuits. Its compact dimensions of approximately 22.5 × 43.2mm make it suitable for portable debugging setups and electronics workbenches.
The J-Link OB supports debugging functions such as firmware downloading, breakpoint-based debugging, and program execution control when used with compatible target devices and supported software. The product is described as supporting SWD and JTAG debugging, although the actual available interface depends on the supplied hardware connections and firmware.
Key Features
- ARM Microcontroller Debugging: Designed for programming and debugging compatible ARM-based microcontrollers.
- USB Connectivity: Features a Micro USB interface for connection to a computer.
- SWD Debugging: Supports Serial Wire Debug functionality on compatible targets.
- Firmware Programming: Enables firmware downloading and programming of supported microcontrollers.
- Breakpoint Debugging: Supports breakpoint-based firmware debugging with compatible development software.
- 3.3V Output: Provides a 3.3V output connection for suitable low-power applications.
- Short-Circuit Protection: Includes an onboard self-recovery fuse for additional protection.
- Compact Design: Measures approximately 22.5 × 43.2mm.
- Protective Covering: Supplied with heat-shrink insulation for basic physical protection.
- Unique Device Identification: Supports identification of individual debugger units in compatible software environments.
- Embedded Development: Suitable for ARM firmware development, debugging, and testing.
Technical Specifications
| Parameter | Specification |
|---|---|
| Product Name | J-Link OB ARM Debugger and Programmer |
| Product Type | USB Debugger and Programmer |
| Debugger Type | J-Link OB (On-Board) |
| Target Architecture | Compatible ARM Microcontrollers |
| Computer Interface | Micro USB |
| Debug Interface | SWD; JTAG support subject to hardware configuration |
| Output Voltage | 3.3V |
| Connection Pins | 4 Pins |
| Protection | Onboard Self-Recovery Fuse |
| Device Identification | Unique Device ID |
| Dimensions | 22.5 × 43.2mm |
| Protective Covering | Heat-Shrink Insulation |
| Primary Function | Firmware Programming and Debugging |
| Applications | Embedded Systems, ARM Development, Firmware Testing |
Applications of J-Link OB ARM Debugger
1. ARM Microcontroller Programming
The J-Link OB Programmer can be used to upload and program firmware on compatible ARM microcontrollers through supported debugging interfaces.
2. Embedded Firmware Debugging
Suitable for identifying firmware errors, inspecting program execution, using breakpoints, and troubleshooting embedded software during development.
3. STM32 Development Projects
Can be used with supported STM32 microcontrollers when the target device, debugger firmware, pin connections, and development software are compatible.
4. Robotics and Automation
Useful for programming and debugging ARM-based controllers used in robotics, motor control, automation systems, and embedded electronics.
5. Educational and Engineering Laboratories
Provides a practical debugging tool for students learning ARM microcontroller programming, firmware development, and embedded system troubleshooting.
6. Embedded Product Development
Suitable for firmware testing, prototype validation, software debugging, and development of ARM-based electronic products.
Advantages of J-Link OB ARM Programmer
- Compact and portable debugging solution.
- Supports firmware programming and debugging.
- Micro USB connectivity for computer interfacing.
- Suitable for compatible ARM-based microcontrollers.
- Supports breakpoint-based firmware troubleshooting.
- Includes onboard self-recovery fuse protection.
- Provides a 3.3V output connection.
- Useful for students, developers, and embedded engineers.
Package Includes
- 1 × J-Link OB ARM Debugger and Programmer
Important Notes
- Verify compatibility with the target ARM microcontroller before purchasing.
- Confirm the pinout before connecting the debugger to a development board.
- Use the correct target voltage and common ground connection.
- The 3.3V output should not be used to power high-current external circuits.
- Debugger functionality depends on the installed firmware and compatible software.
- J-Link OB firmware may have licensing and usage restrictions. Verify the permitted use of the supplied unit before commercial or production deployment.
- Product appearance and PCB design may vary depending on the manufacturing batch.
Frequently Asked Questions (FAQs)
1. What is the J-Link OB ARM Debugger and Programmer used for?
The J-Link OB ARM Debugger and Programmer is used for firmware programming, debugging, and testing of compatible ARM microcontrollers. It helps developers upload firmware, inspect program execution, and identify software errors in embedded applications.2. Can the J-Link OB Programmer be used with STM32 microcontrollers?
Yes, the J-Link OB Programmer can be used with supported STM32 microcontrollers through compatible debugging interfaces. Compatibility depends on the specific STM32 device, debugger firmware, target connections, and development software.3. What is the difference between J-Link OB and a standard J-Link debugger?
J-Link OB (On-Board) is designed primarily as an embedded debugging interface, while standard standalone J-Link debuggers generally offer broader device support and additional debugging capabilities. The features available on a J-Link OB module depend on its hardware and firmware configuration.4. Does the J-Link OB ARM Debugger support SWD and JTAG?
The J-Link OB ARM Debugger is described as supporting SWD and JTAG debugging. However, the actual interfaces available depend on the supplied module's firmware and pin connections. A 4-pin connector commonly supports SWD, while full JTAG generally requires additional signals.Only logged in customers who have purchased this product may leave a review.





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