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[Awing]

Can S9S12XS256J0CAE completely replace S9S12XS128J1CAE? Are the two just the difference in flash size?

[Awing]

If I don't have this S9S12XS128J1CAE, can I use S9S12XS256J0CAE instead?

[danielmartynek]

Hello @Awing,

Yes, you can,

Regards

[danielmartynek]

Hello @Awing,

Not only the Flash size but the SRAM too:

danielmartynek_3-1639399704428.png

There are a few different specifications,

Table A-5. Thermal Package Characteristics (9S12XS256)

Table A-6. Thermal Package Characteristics (9S12XS128)

Table A-12. Run and Wait Current Characteristics

These two parts have different masks:

danielmartynek_0-1639399257031.png

S9S12XS256J0CAE 0M05M

S9S12XS128J1CAE 1M04M

The RM specifies different part ID numbers:

danielmartynek_2-1639399475277.png

Each mask revision has a different errata document:

https://www.nxp.com/products/processors-and-microcontrollers/additional-mpu-mcus-architectures/16-bi...

danielmartynek_1-1639399373044.png

Regards,

Daniel