topic Re: Restricted areas after Configuration Lock for S32K312 MCU in Secure Authentication

Restricted areas after Configuration Lock for S32K312 MCU

jeongwoo — Thu, 10 Jul 2025 08:08:09 GMT

Hello

Our company is working on a project using S32K312 MCU.
I have a question about Configuration Lock among cyber security items.

I know that there are areas in the HSE area that are restricted after activating Configuration Lock. Except for the Secure Area (ex. 0x005D4000 -- 0x005FFFFF) that is basically restricted among the HSE areas, is there an area where the read/write area is not restricted before activating Configuration Lock, but is it restricted after activating Configuration Lock?

I will wait for your answer. Thank you.

Re: Restricted areas after Configuration Lock for S32K312 MCU

lukaszadrapa — Wed, 16 Jul 2025 05:00:35 GMT

Hi @jeongwoo

Please take a look at Table 197, Table 199 and Table 200 in S32K3 reference manual:

https://www.nxp.com/webapp/Download?colCode=S32K3XXRM

Table 197 - memory map when HSE feature flag is disabled (not programmed)

Table 199 - memory map when HSE feature flag is enabled (programmed) - this is also memory map when FULL_MEM version of HSE firmware is installed

Table 200 - memory map when AB_SWAP version of HSE firmware is installed.

Regards,

Lukas

PS. If you have questions about S32K devices, please ask them in this community space:

https://community.nxp.com/t5/S32K/bd-p/S32K