Convert DFT to PSM

Understanding DFT and PSM file formats

DFT files are typically associated with Design File Templates used in various electronic design automation (EDA) tools, such as Mentor Graphics or Siemens EDA software. These files often contain schematic or layout templates for printed circuit board (PCB) or integrated circuit (IC) design.

PSM files, on the other hand, are commonly used as Pattern Sequence Mask files in photolithography or as PostScript Macro files in some EDA and CAD applications. The exact nature of the PSM file depends on the software ecosystem, but they generally store pattern, mask, or macro data for manufacturing or design automation.

Why convert DFT to PSM?

Converting a DFT file to a PSM file is often necessary when moving design templates or patterns from one EDA tool to another, or when preparing data for photomask generation or advanced patterning processes. This ensures compatibility and streamlines the workflow between design and manufacturing stages.

How to convert DFT to PSM

There is no universal, direct converter for DFT to PSM due to the proprietary nature of these formats. However, the conversion can typically be performed using the original EDA software that created the DFT file, provided it supports export or save-as functionality to the PSM format.

For example, in Mentor Graphics or Siemens EDA tools, you can try the following steps:

• Open your DFT file in the EDA tool.
• Navigate to File → Export or File → Save As.
• Select PSM as the target format, if available.
• Follow the prompts to complete the export.

If the direct export is not available, you may need to export the DFT file to an intermediate format (such as GDSII or DXF), then use a secondary tool or script to convert that file to PSM.

Best software for DFT to PSM conversion

The best software for this conversion is typically the original EDA suite that created the DFT file, such as Mentor Graphics Expedition or Siemens EDA Xpedition. These tools offer the highest compatibility and preserve design integrity during conversion. If you need to use a third-party tool, consider KLayout for intermediate format handling, though direct DFT to PSM support may be limited.

Key considerations

• Backup your original DFT file before conversion.
• Check compatibility of the PSM file with your target tool or manufacturing process.
• Validate the converted PSM file to ensure all design elements are preserved.