what is the difference between ARM cortex M3 and ARM cortex A9

I need information about difference in registers and RAM and pins, i want to write CAN code to ARM cortex A9 by taking the reference of ARM cortex M3 code, can anyone please share information to me ASAP...
what is the difference between ARM cortex M3 and ARM cortex A9

I need information about difference in registers and RAM and pins, i want to write CAN code to ARM cortex A9 by taking the reference of ARM cortex M3 code, can anyone please share information to me ASAP...
What is the top level difference in features between Cortex-M33 and Cortex-M4?

This is a very common question. The diagram below is a pictorial description of the differences followed by some explanations. Starting from the bottom: Cortex-M33 is an implementation of the...
What is the top level difference in features between Cortex-M23 and Cortex-M33?

Both processors have TrustZone for ARMv8-M. The following table compares the other top level features. *Performance numbers are preliminary
What is the top level difference in features between Cortex-M23 and Cortex-M0+?

This is a very common question too. The diagram is a pictorial description of the differences followed by some explanations. Starting from the bottom: -Cortex-M23 is an implementation of...