Why Is Only One Memory Bank Accessed Per Operation?

💡 The Answer

• Memory banks are logical units that organize storage in SDRAM.
• Each bank has independent rows and columns across multiple chips.
• Accessing multiple banks simultaneously would require more complex control logic.
• Limiting to one bank per operation simplifies the memory controller design.
• This also prevents conflicts in data paths and timing issues.
• Despite only one bank active per operation, banks can be interleaved for performance.