The appendix also contains state diagrams, truth tables, and refresh operation flows.

To help narrow down exactly what you need from this specification, tell me: tRFCt sub cap R cap F cap C end-sub ) for a speed bin?

Memory banks are organized into 2 or 4 independent Bank Groups.

Unlike SRAM (cache) or flash (USB drives), DRAM is forgetful. Literally. The capacitors holding your "1"s and "0"s leak charge in milliseconds. JESD79-4D dictates that every single row of memory must be read and rewritten every 64 milliseconds (standard temperature) or 32 milliseconds (hot environment).