2.6.1 Non-Read-While-Write Area of Flash Not Functional

The Non-Read-While-Write area of the Flash is not working as expected. The problem relates to the device speed when reading the Flash in this area.

Work Around

  • Only use the first 248 KB of the Flash
  • If boot functionality is needed, run the code in the Non-Read-While-Write area at a maximum of 1/4th of the maximum device frequency at any given voltage by writing the CLKPR register before entering the boot section in the code.

Affected Silicon Revisions

ATmega2560/2561
Rev. A Rev. C Rev. E Rev. F
X - - -