This document defines the DDR3 SDRAM specification, including features, functionalities, AC and DC
characteristics, packages, and ball/signal assignments. The purpose of this Specification is to define the
minimum set of requirements for JEDEC compliant 512 Mb through 8 Gb for x4, x8, and x16 DDR3
SDRAM devices. This specification was created based on the DDR2 specification (JESD79-2) and some
aspects of the DDR specification (JESD79). Each aspect of the changes for DDR3 SDRAM operation were
considered and approved by committee ballot(s). The accumulation of these ballots were then incorporated
to prepare this JESD79-3 specification, replacing whole sections and incorporating the changes into
Functional Description and Operation.
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