GSAS USB-JTAG Debugger

The GSAS USB-JTAG Debugger is a compact debug interface that connects a host PC to target microcontrollers via the JTAG (Joint Test Action Group) debug port. It enables on-chip debugging, setting breakpoints, stepping through code, inspecting registers and memory, and programming on-chip Flash, directly from standard development environments such as Keil MDK, IAR Embedded Workbench, and other IDE tools that support JTAG connectivity. The USB interface provides both power and high-speed data transfer, requiring no external power supply or additional cables beyond the USB connection to the PC and the JTAG ribbon cable to the target board.

The debugger supports Arm Cortex-M based microcontrollers, making it a versatile tool across the GSAS Arm development board range. When paired with GSAS Arm development boards such as the LPC-1768 or LPC-2929, it provides full source-level debugging and Flash programming through the standard JTAG header. Students can set hardware breakpoints, inspect peripheral registers in real time, and trace program execution at the instruction level.

For educational institutions, the USB-JTAG Debugger transforms embedded systems labs from a “program-download-run-observe” workflow into a proper debug-centric development experience. Students learn to use the same debugging techniques employed in professional embedded development: setting conditional breakpoints, watching variable values change in real time, examining call stacks, and diagnosing hard faults, skills that are directly transferable to industry practice.

Specifications

Parameter	Value
Host Interface	USB 2.0
Target Interface	JTAG (standard 20-pin or 10-pin header)
Supported Architectures	Arm (Cortex-M, ARM7/9)
Debug Features	Breakpoints, single-step, register/memory view
Flash Programming	On-chip Flash download and verify
IDE Compatibility	Keil MDK, IAR EWARM, and JTAG-compatible tools
Power	USB-powered (no external supply needed)
Part Number	USB-JTAG Debugger

Compatible GSAS Boards

Board	Architecture	JTAG Use
GSAS LPC-1768	Arm Cortex-M3 (NXP LPC1768)	Full JTAG debug + Flash programming
GSAS LPC-2929	ARM9 (NXP LPC2929)	Full JTAG debug + Flash programming

Why GSAS

GSAS designed the USB-JTAG Debugger to complement its range of Arm development boards, providing a cost-effective debug solution specifically validated against GSAS hardware. Engineering colleges deploying GSAS Arm development boards can add JTAG debugging capability to their labs without investing in expensive third-party debug probes. The debugger is manufactured in Bangalore and supported by the GSAS technical team with documentation, driver packages, and IDE configuration guides.

Products are available for immediate purchase through the GSAS online store (“Buy on Store”) or through direct engagement for institutional and volume orders (“Request Volume Pricing”).