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Wednesday, March 08, 2017
New LPDDR4 And LPDDR4X Memory Standards To Boost Low Power Devices


JEDEC Solid State Technology Association today announced the publication of JESD209-4B, Low Power Double Data Rate 4 (LPDDR4) and JESD209-4-1, Addendum No. 1 to JESD209-4, Low Power Double Data Rate 4X (LPDDR4X).



Both mobile memory standards are designed to boost memory speed and efficiency for mobile computing devices such as smartphones, tablets, and ultra-thin notebooks.

This latest revision of LPDDR4 offers several updates intended to achieve even higher performance over the previous version of the standard, including:

  • Addition of a single-channel die option for smaller applications
  • Addition of new MCP, PoP and IoT packages
  • Additional definition and timing improvements for the highest 4266 Mbps speed grade

The new LPDDR4X standard is an optional extension intended to offer product designers options for further power reduction as well as on die termination (ODT) flexibility. In LPDDR4X, the I/O supply voltage (VDDQ) is reduced from 1.1 V to 0.6 V. This 40% voltage reduction leads to much lower power usage when sending and receiving data from the memory device, which is particularly beneficial for smartphones and other handheld devices. In addition, LPDDR4X supports easily programmable command bus termination for high memory density systems.



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