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Problems with emulator when the number of Flash memory rewrites is exceeded

Last Updated:10/11/2017

Question:

What problems could occur with the emulator if I exceed the number of Flash memory rewrites guaranteed in the MCU spec?

Answer:

The number of Flash memory rewrites differs greatly according to usage conditions. The emulator will not stop operating if the maximum number of rewrites is slightly exceeded.  As a general guideline, assume that “exceeding the rewrite limit” really means rewriting the Flash memory for an unusually long period of time. The emulator downloads the program to the Flash memory immediately before running it. After the GO command is issued, use the time shown in the “Download” display in the Status Window as a reference.

Example: The Download display indicated 1 second or less for a program before, but now it indicates 5 seconds or more for the same-sized program.

-> This means you have gone over the guaranteed number of rewrites. You should replace the MCU.

Note: The same also applies to the evaluation chip mounted on the emulator. Renesas will replace the evaluation chip (free within the first year after purchase, otherwise available for purchase), so please contact your sales rep for more details.

Suitable Products

E1 [R0E000010KCE00]
E20 [R0E000200KCT00]
E10A-USB
E8a
E10T-USB
E30A
E8
E7
E6000H