Performance Comparison:

J-Link is Fastest in Flash Programming

After a recent upgrade to the J-Link hardware and further improvements to the software, the industry leading J-Link has been subjected to a flash programming speed comparison against various debug probes.

The results show, that even the base model of the J-Link is very powerful. All tests have been performed on the same target chip, STM32 with blank flash memory.

Test Scenario

The speed tests have been made with different debug probes and software under the same test conditions.

The ULINKpro was tested with KEIL uVision.

The J-Link base model of the v92013 hardware (v9) was tested with the IAR Embedded Workbench for ARM, KEIL uVision, and the J-Link Commander version 4.59a (test utility included freely with the J-Link related software package).

All tests have been performed by placing a 512 KB program into the flash memory of a blank STM32F417IG microcontroller connected via SWD interface. Tests via JTAG interface gave similar results.

Flash Download performance has a significant impact on debug turn around times. This Flash-Download performance comparison shows once again that J-Link plays in a league of its own, as even the base model clearly outperforms every other emulator Segger has tested with.

Test Results

Speed Diagram