JEDEC Solid State Technology Association
LPDDR5X is maintained by JEDEC Solid State Technology Association. The current version is JESD209-5 (LPDDR5X extension). The register lists it as active. The specification is openly available.
A speed-graded extension of JEDEC's low-power DDR5 mobile-memory standard, pushing per-pin data rates higher for flagship phones and, increasingly, power-constrained edge-AI inference chips that need HBM-class bandwidth without HBM's packaging cost.
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