HBM2e/3 Solution

The third-generation HBM (HBM2e/3) technology, outlined by the JESD235C standard, inherits physical 128-bit DDR interface with 2n/4n prefetch architecture, internal organization, 1024-bit input/output, 1.2 V I/O and core voltages as well as all the crucial parts in the original technology. Just like the predecessor, HBM2e/3 supports two, four, eight or twelve DRAM devices on a base logic die (2Hi, 4Hi, 8Hi, 12Hi stacks) per KGSD. HBM Gen 3 expands the capacity of DRAM devices within a stack to 24GB and increases the data rate by up to 6.4Gb/s per pin. In addition, the new technology brings an important improvement to bandwidth maximization.

The INNO HBM2e/3 is part of Innosilicon’s broad leading-edge memory IP portfolio that includes GDDR6/6X and DDR5/LPDDR5. Developed by the experienced team with great expertise, the Innosilicon product family enables customers to achieve the best design results while accelerating time to market.


  • Data rate up to 6.4Gbps with HBM3, up to 3.6Gbps with HBM2e
  • Supports 12-high DRAM stack with capacity up to 24GB per stack
  • Up to 920GB/s of data bandwidth for each cube with HBM3
  • Up to 460GB/s of data bandwidth for each cube with HBM2e
  • ECC and DBI/DM supported
  • Programmable 18mA driver with calibration
  • Multiple receivers for power and speed trade off
  • Balanced clock tree to reduce skew among bits
  • Various clock gating and low power modes
  • Measures taken to reduce simultaneous switching power/noise, for both DBI on and off
  • Self heating and aging effect carefully evaluated, IR/EM fixed to the best possible
  • Supports micro-bump and TSV package
  • Interposer routing straightly across Controller and DRAM with unified routing length for all bits
  • Interoperability test supporting any third-party DFI 4.0-compliant memory controller
  • IEEE1500 port supported for separate direct access to the memory stack and PHY


  • Substantially increases bandwidth available to computing devices
  • Fully pre-assemble design, drop-in hard macro to ease integration and speed time to market
  • Offers leading performance, power, and area per terabit
  • Extensive EDA tool support for various design automation flows
  • DFT functions to reduce test time and ensure high test coverage
  • Proven capabilities in PHY and silicon interposer design and integration
  • Optional PI/SI and thermal co-design service
  • Full support from IP delivery to production


HBM2e/3 Solution


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