i.MX RT Crossover MCUsのトピックRT1170 persistent-across-reset RAM?

RT1170 persistent-across-reset RAM?

Littell — Fri, 28 Jun 2024 19:45:22 GMT

Does the RT1170 have some (small) area of internal RAM that will retain its contents across a reset?

Re: RT1170 persistent-across-reset RAM?

Sam_Gao — Fri, 05 Jul 2024 10:21:52 GMT

Hi @Littell

RAM will retain its contents across a reset if NO any power off, that's how ram works.

If power off, it will be lost.

https://hackernoon.com/differences-between-ram-rom-and-flash-memory-all-you-need-to-know-ghr341i

B.R,

Sam

Re: RT1170 persistent-across-reset RAM?

Littell — Sat, 06 Jul 2024 17:20:35 GMT

Yes, but are the internal RAM blocks powered down as the result of a hardware reset? (My apologies for not being familiar enough with the RT1170 - do the internal RAM blocks even have separate power enables?)

Re: RT1170 persistent-across-reset RAM?

Sam_Gao — Tue, 09 Jul 2024 08:30:59 GMT

Hi @Littell

Please refer https://www.nxp.com/design/training/i-mx-rt1170-mcus-architecture-overview:TIP-IMX-RT1170-MCUS-ARCHITECTURE-OVERVIEW to know more about RT1170.

For hardware reset (E.g. POR ) case, the state of each RAM will be undefined(random, not all zero).

B.R, Sam