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Designator: PBGA-B#[#}_I0p65
Item: 11.11-978, Access STP Files for MO-342A
Cross Reference: DR4.5

This document defines the DDR4 SDRAM specification, including features, functionalities, AC and DC characteristics, packages, and ball/signal assignments. The purpose of this Standard is to define the minimum set of requirements for JEDEC compliant 2 Gb through 16 Gb for x4, x8, and x16 DDR4 SDRAM devices. This standard was created based on the DDR3 standard (JESD79-3) and some aspects of the DDR and DDR2 standards (JESD79, JESD79-2). Committee Item 1716.78F

The power and temperature cycling test is performed to determine the ability of a device to withstand alternate exposures at high and low temperature extremes and simultaneously the operating biases are periodically applied and removed. It is intended to simulate worst case conditions encountered in application environments. The power and temperature cycling test is considered destructive and is only intended for device qualification. This test method applies to semiconductor devices that are subjected to temperature excursions and required to power on and off during all temperatures.

This standard describes a nondestructive test to assess solid state device mark legibility. The specification applies only to solid state devices that contain markings, regardless of the marking method. It does not define what devices must be marked or the method in which the device is marked, i.e., ink, laser, etc. The standard is limited in scope to the legibility requirements of solid state devices, and does not replace related reference documents listed in this standard.

This table briefly describes the changes made to this standard, JESD21-C, Release 29, compared to its predecessor, JESD21C, Release 28.

Designator: PQFP-F8[10]_I127-R5p51x6.54Z1P1
Item: 11.11-959

JEP162A, while establishing the complex nature of System Level ESD, proposes that an efficient ESD design can only be achieved when the interaction of the various components under ESD conditions are analyzed at the system level. This objective requires an appropriate characterization of the components and a methodology to assess the entire system using simulation data. This is applicable to system failures of different categories (such as hard, soft, and electromagnetic interference (EMI)). This type of systematic approach is long overdue and represents an advanced design approach which replaces the misconception, as discussed in detail in JEP161, that a system will be sufficiently robust if all components exceed a certain ESD level.

Item 11.11-973, Access STP Files for MO-338A

This annex describes the serial presence detect (SPD) values for all DDR4 modules covered in Document Release 5. Differences between module types are encapsulated in subsections of this annex. These presence detect values are those referenced in the SPD standard document for ‘Specific Features’. Item 2276.05.

This document defines the electrical and mechanical requirements for 260 pin, 1.2 V (VDD), Small Outline, Double Data Rate, Synchronous DRAM Dual In-Line Memory Modules (DDR4 SDRAM SODIMMs). These DDR4 SODIMMs are intended for use as main memory when installed in PCs, laptops and other systems. This document also contains the DDR4 DIMM Label, Ranks Definition. Item 2224.13A

The Serial Flash Discoverable Parameter (SFDP) standard provides a consistent method of describing the functional and feature capabilities of serial flash devices in a standard set of internal parameter tables. These parameter tables can be interrogated by host system software to enable adjustments needed to accommodate divergent features from multiple vendors. Any company may request a Function Specific ID by making a request to the JEDEC office at juliec@jedec.org. Please include “Function Specific ID Request, JESD216” in the email subject line. Item 1775.15 and 1775.18.

This standard defines standard specifications for features and functionality, DC and AC interface parameters and test loading for definition of the DDR4 data buffer for driving DQ and DQS nets on DDR4 LRDIMM applications. Any TBDs as of this document, are under discussion by formulating committee. Item 314.11D

*If you downloaded this file between 8/7/2019 and 8/14/2019, please download again, the publication date on the document was incorrected and has been fixed.