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The HBM DRAM is tightly coupled to the host compute die with a distributed interface. The interface is divided into independent channels. Each channel is completely independent of one another. Channels are not necessarily synchronous to each other. The HBM DRAM uses a wide-interface architecture to achieve high-speed, low-power operation. The HBM DRAM uses differential clock CK_t/CK_c. Commands are registered at the rising edge of CK_t, CK_c. Each channel interface maintains a 28b data bus operating at DDR data rates.
 

Document History

  1. JEDEC JESD235D


    High Bandwidth Memory (HBM) DRAM (HBM1, HBM2)

    • Most Recent
  2. JEDEC JESD235C


    High Bandwidth Memory (HBM) Dram (HBM1, HBM2)

    • Historical Version
  3. JEDEC JESD235B


    HIgh Bandwidth Memory DRAM (HBM1, HBM2)

    • Historical Version
  4. JEDEC JESD235A


    HIgh Bandwidth Memory (HBM) DRAM

    • Historical Version
  5. JEDEC JESD235

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    HIGH BANDWIDTH MEMORY (HBM) DRAM

    • Historical Version