Résumé de section

  • This chapter introduces the fundamental concepts and importance of memory in embedded and computing systems, highlighting its role in storing both programs and data required for system operation .

    It explains the general organization of memory, including addressing, decoding, data buses, and read/write operations, along with timing aspects such as access time and memory cycle time.

    The chapter presents the main characteristics of memory, such as capacity, speed, bandwidth, and volatility, and provides a detailed classification of memory types, including:

    • Non-volatile memories (ROM, PROM, EPROM, EEPROM, Flash, mass storage),
    • Volatile memories (RAM, SRAM, DRAM, SDRAM).

    It also explores the internal structure and operation of different memory technologies, as well as their advantages, limitations, and application domains in embedded systems.

    Furthermore, the chapter addresses common memory issues (fragmentation, memory leaks) and introduces advanced techniques for memory optimization, such as cache hierarchy, prefetching, and efficient memory management.

    Overall, this chapter provides essential knowledge for understanding, selecting, and optimizing memory systems in embedded applications.