J-Mem is a small stand-alone application available for Windows, macOS and Linux. J-Mem makes it possible to look into the memory of a chip at run-time using J-Link or J-Trace:
- RAM can be modified
- Special Function Registers (SFRs) can be written
- Whole regions in RAM can be filled with a desired value
- Memory sections can be saved to a .bin file
- A periodic refresh of the displayed memory contents can be set
The memory accesses can be selected to be 8, 16 or 32 bit.
J-Mem works nicely when modifying SFRs, especially because it writes the SFR only after the complete value has been entered.
J-Mem is distributed as part of the J-Link software and documentation package and can be used free of charge.