This document defines the LPDDR2 specification, including features, functionalities, AC and DC characteristics, packages, and ball/signal assignments. This specification covers the following technologies: LPDDR2-S2A, LPDDR2-S2B, LPDDR2-S4A, LPDDR2-S4B, LPDDR2-N-A, and LPDDR2-N-B. The purpose of this specification is to define the minimum set of requirements for JEDEC compliant 64 Mb through 8 Gb for x8, x16, and x32 SDRAM devices as well as 64 Mb through 32 Gb for x8, x16, and x32 for NVM devices. This specification was created using aspects of the following specifications: DDR2 (JESD79-2), DDR3 (JESD79-3), LPDDR (JESD209), and LPDDR-NVM (N07-NV1A). Each aspect of the specification were considered and approved by committee ballot(s). The accumulation of these ballots were then incorporated to prepare the LPDDR2 specification.