xue/sim/ibis/micron_ddr2

2Gb DDR2 SDRAM IBIS models



The u49a IBIS models include On Die Termination (ODT) characteristics.  ODT is

modeled through the use of [Submodel] power and ground clamp I-V curves that

add the termination characteristics to the regular power and ground clamp

characteristics when the I/O is functioning as an input.  ODT applies to the

DQ, DQS/DQS#, RDQS/RDQS#, and DM signals.  Use the [Model Selector] to choose

between 50, 75, or 150 ohm ODT settings. 



NOTE: C_comp is lower for the ODT-enabled models versus the normal I/O model.

The C_comp value is set to match the input state of the DQ I/O as measured from

the HSPICE model.  Due to the C_comp differences between the DQ model and the

DQ_ODT* models, the output characteristics of the models will look different

when simulated.  So, to match most closely with the HSPICE model, simulate with

the DQ_FULL or DQ_HALF model for ALL Output simulations.  Use the ODT models

ONLY for Input simulations. 



All the speed grades are combined into a single IBIS file

Use the models labeled with 533 for the DDR2-400/533 speeds and the models 

labeled with 800 for the DDR2-667/800 speeds.



u49a.ibs Packaged model for commercial temperatures

u49a_bd.ibs Bare Die model

u49a_it.ibs Packaged model for industrial temperatures



[Disclaimer]    This software code and all associated documentation, comments

                or other information (collectively "Software") is provided 

                "AS IS" without warranty of any kind. MICRON TECHNOLOGY, INC. 

                ("MTI") EXPRESSLY DISCLAIMS ALL WARRANTIES EXPRESS OR IMPLIED,

                INCLUDING BUT NOT LIMITED TO, NONINFRINGEMENT OF THIRD PARTY

                RIGHTS, AND ANY IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS

                FOR ANY PARTICULAR PURPOSE. MTI DOES NOT WARRANT THAT THE

                SOFTWARE WILL MEET YOUR REQUIREMENTS, OR THAT THE OPERATION OF

                THE SOFTWARE WILL BE UNINTERRUPTED OR ERROR-FREE. FURTHERMORE,

                MTI DOES NOT MAKE ANY REPRESENTATIONS REGARDING THE USE OR THE

                RESULTS OF THE USE OF THE SOFTWARE IN TERMS OF ITS CORRECTNESS,

                ACCURACY, RELIABILITY, OR OTHERWISE. THE ENTIRE RISK ARISING OUT

                OF USE OR PERFORMANCE OF THE SOFTWARE REMAINS WITH YOU. IN NO

                EVENT SHALL MTI, ITS AFFILIATED COMPANIES OR THEIR SUPPLIERS BE

                LIABLE FOR ANY DIRECT, INDIRECT, CONSEQUENTIAL, INCIDENTAL, OR

                SPECIAL DAMAGES (INCLUDING, WITHOUT LIMITATION, DAMAGES FOR LOSS

                OF PROFITS, BUSINESS INTERRUPTION, OR LOSS OF INFORMATION)

                ARISING OUT OF YOUR USE OF OR INABILITY TO USE THE SOFTWARE,

                EVEN IF MTI HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.

                Because some jurisdictions prohibit the exclusion or limitation

                of liability for consequential or incidental damages, the above

                limitation may not apply to you.

 

                Copyright 2006 Micron Technology, Inc. All rights reserved.