[ianhowson]

The very next sentence doesn't make sense either:

> And to reduce flash-wear, RAM contents can be preserved even during low-power mode when most hardware modules are turned off.

Flash wear only occurs during erases, so... why does it matter to reduce wear in low-power mode? Why would they be writing to flash during normal operation, except perhaps an authentication counter?

One would hope that they're executing the program out of the flash (that they've previously verified and locked) rather than out of 'stack'. This isn't an operation that causes wear.

[monocasa]

Maybe they're saying that the other low power mode would slurp all of sram into flash?

But that still doesn't make sense, SRAM lasts for years on a battery of you're not clocking it, and every little uC I know of that vaguely cares about power lets you do that. Why call it out. Hell, NES games keep their SRAM saves going for decades off a little coin cell.