Key Design Requirements for

Memory subsystem architecture Memory subsystem architecture is a key challenge for embedded systems designers. Memory parameters such as density, performance, packaging, and interfaces all play a significant role in system-level performance. With the variety of memory types available to system designers, it is viable to partition the memory subsys-tem according to the specific needs of the higher-level system and application components. In some cases, caching is a reasonable approach to achieve an appropriate balance of performance, power, and cost. In other cases, partitioning according to the unique characteristics of the underlying memories becomes a more reasonable approach. For example, putting bit-alterable content in a bit-alterable memory instead of attempting to manage bit-alterability in a block-alterable memory