PSpice User Guide

PSpice User Guide

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PSpice User Guide Digital simulation October 2019 618 Product Version 17.4-2019 © 1999-2019 All Rights Reserved. Using the FILESTIMn parts The FILESTIMn parts have a single pin for connection to the rest of the circuit. FILESTIM1 is used for driving a single net. FILESTIM2, FILESTIM4, FILESTIM8, FILESTIM16 and FILESTIM32 drive buses that are 2, 4, 8, 16 and 32 bits wide, respectively. You must define the digital stimulus specification in an external file. Using this technique, stimulus definitions can be created from scratch or extracted with little modification from another simulation's output file. Refer to the online PSpice Reference Guide for more information about creating digital stimulus specifications and files. Table 14-8 lists the properties of the FILESTIMn parts. The IO_MODEL, IO_LEVEL, and PSPICEDEFAULTNET properties describing this part's I/O characteristics are provided with default values that rarely need modification. However, you must define the FILENAME property with the name of the external file containing the digital stimulus specification. The SIGNAME property specifies the name of the signal inside the stimulus file which becomes the output from the FILESTIMn part. If left undefined, the name of the connected net (generally a labeled wire) determines which signal is used. Table 14-8 FILESTIMn part properties Property Description FILENAME Name of file containing the stimulus specification. Note: If you do not specify the path to the stimulus file, you must place the file in the folder for the simulation profile for which you are configuring the stimulus. SIGNAME Name of output signal IO_MODEL I/O model describing the stimulus' driving characteristics IO_LEVEL Interface subcircuit selection from one of the four AtoD or DtoA subcircuits provided with the part's I/O model

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