| ??? 12/01/10 10:34 Read: times |
#179784 - Large span of capabilities with same tools etc Responding to: ???'s previous message |
Jecksons Ben said:
Why lot of experimenter moving to ARM? It's that ARM processor lower price that orginal MCS-51 and became standard of product? No - not cheaper. But spanning a wider range. The cheapest ARM chips are < $1, while the most powerful ARM chips are several magnitudes more capable than the 8051 chips. That big span can be very advantageous, since some of the knowledge about one ARM chip can be reused for another chip. One day, you may need a tiny processor for a lamp timer. The next day, a huge processor for performing capture of multiple CAN interfaces in a vehicle. It's nice to be able to use the same tools when switching between small or large processor. It's nice to be able to at least the assembler instructions for a large set of processors (even if it takes time to learn the timing and other specifics of different cores to write optimal code). It's nice to be able to run with one processor, and know that there are other chips that are 10 times faster with almost identical peripherials making it possible to make very small changes to interrupt handlers and initialization code. It's nice to know that if more features are requested, a larger program can be written without need to start to bank-switch the memory. Even if many problems are easy to solve with a 8051, it's still nice to use an ARM instead just because. |
