This is an agreement between Micro Digital, Inc. (“MDI”) located at 2900 Bristol Street, Suite G204, Costa Mesa, California, USA and “Licensee” as follows:

To license, please email or call 1-800-366-2491.
First Name
Last Name

Licensee wishes to use eheap “Software”.

Therefore the parties agree as follows:
1. Software provided to Licensee shall be used only for evaluation. Licensee agrees that a license fee is due if Software is to be used in a commercial product.

2. Licensee agrees that Software shall not be used to produce a product serving the same or similar purpose as Software and offered in competition with Software for commercial products, even if distributed free of charge.

3. Licensee agrees that Software, copyrights, and all other proprietary rights remain the property of MDI and that this Agreement transfers no Product ownership to Licensee. All enhancements and modifications are owned by MDI.

4. Licensee shall not disassemble nor reverse engineer Software.
5. Licensee agrees to not remove any legal notices from Software.

6. Software is provided without warranty of any kind. Licensee must assume the entire risk of using Software. This includes any and all damage to persons and property, even as the result of one or more defects in Software.

7. The terms and conditions stated herein are declared to be severable. If any paragraph, provision, or clause in this Agreement shall be found or held to be invalid or unenforceable in any jurisdiction in which this Agreement is being performed, the remainder of this Agreement shall be valid and enforceable.

8. This Agreement shall be governed by the laws of the State of California.

I (Licensee) accept and agree to the above terms and conditions.




  Home > Downloads > eheap
  eheap™ — Embedded Heap

eheap is a bin-type heap that provides adaptability, safety, and high performance for embedded systems running on RTOSes or standalone. It is similar to dlmalloc, but designed for embedded systems. Unlike dlmalloc, eheap is not intended to be super-fast, but rather to be a good fit for the many requirements of embedded systems. Nonetheless, eheap is fast, and after being customized to your system, overall performance may actually be better than with dlmalloc. In addition, it offers some interesting debug and self-healing options. See eheap vs. dlmalloc for detailed information.

eheap Features

  • Multiple heap support for secure systems. (New)
  • Aligned allocations. (New)
  • Cortex v7M MPU region allocations. (New)
  • Integral 8-byte and 12-byte block pools. (New)
  • Configurable number of bins and sizes.
  • Deferred free chunk merging.
  • Bin sort and bin seed.
  • Debug chunks and statistics aid debugging.
  • Self repair via bi-directional scanning.
  • RTOS and compiler agnostic.
  • Licensed standalone and as part of smx.

Free Eval Kit and Manual   (v5.1.0,  4/11/19,  503 KB)

Eval libraries are built with IAR EWARM. If you use other tools please email


eheap Part 1:  Configuration
eheap Part 2:  Enhanced Debugging
eheap Part 3:  Self-Healing

eheap vs. dlmalloc

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