文件列表:

z90b_ondie_decoupling_perdq.ckt (10476, 2017-04-06)
z90b.ibs (2778883, 2017-04-18)
z90b_ext_model_quality_rpt.pdf (2293465, 2017-04-18)
z90b_ibis_quality_checklist.xls (129024, 2017-04-18)
z90b_it.ibs (2774879, 2017-04-18)
z90b_ondie_decoupling_alldq.ckt (10485, 2017-04-06)

Z90B IBIS Model Die Rev "B" 4Gb DDR4 SDRAM IBIS Model Rev 2.0: 4/18/2017 z90b.ibs is valid for Commercial Temperature Range 0C<=Tc<=95C z90b_it.ibs is valid for Industrial Temperature Range -40C<=Tc<=95C Notes: ------ This IBIS model includes 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_n, TDQS/TDQS_n, DBI and DM signals. Use the [Model Selector] to choose between 34, 40, 48, 60, 80, 120 or 240 ohm ODT settings. The *_2666 models are valid for all speed grades up to 2666 Mbps. The *_3200 models are valid for the 3200 Mbps speed grades. Model syntax should be checked using the latest IBISCHK parser, Version 6.1.2 or later. Earlier versions may indicate erroneous Errors, Warnings or Cautions due to parser bugs. Notes on Power Aware IBIS features: ------------------------------------------- 1. The on-die VDDQ-VSSQ decoupling circuit for DQ and DQS MUST be included externally to the IBIS model. Two options are available using the following Spice subcircuits: a. z90b_ondie_decoupling_all.ckt - includes VDDQ-VSSQ decoupling for all signals (full die) including DQ0-15, LDQS_t/c, UDQS_t/c, UDM and LDM. This circuit should be used for most simulation scenarios including x4 and x8 DQ options. b. z90b_ondie_decoupling_perdq.ckt - includes VDDQ-VSSQ decoupling for an individual signal such as DQ0-15, LDQS_t/c, UDQS_t/c, UDM or LDM. This circuit is useful for correlation simulations comparing the IBIS model and the Spice model for a single I/O. 22 instances of this subcircuit in parallel is equivalent to the z90b_ondie_decoupling_all.ckt circuit. Correct usage of these subcircuits requires adding them across the IBIS DQ and DQS models' [Pullup Reference] and [Pulldown Reference] nodes (the die power and ground pads inside of any package model). Reference the .ckt files for a Spice simulator example. 2. Due to the inclusion of [Composite Current] I-t waveforms, overclocking of Models may be required, as the V-t and I-t waveforms are longer than the bit period in some cases. 3. [Composite Current] and [ISSO *] data tables included for all DQ and DQS driver models. 4. If simulating the IBIS model in HSPICE, it is recommended to use 2016.03 or newer version. [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] Copyright 2017 Micron Technology, Inc. All rights reserved.

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