***lib_type:** can be either industry or academia [industry|academia]. For the industry library, some transistor types are available, and the type of transistor should be declared in the property transistor_type.
***transistor_type:** This XML property specify the transistors to be used in the industry library. For example, the type of transistors can be “TT”, “FF” etc.
***pn_ratio:** specify the ratio between p-type transistors and n-type transistors. The ratio will be used when building circuit structures such as inverters, buffers, etc.
***model_ref:** specify the reference of in calling a transistor model. In SPICE netlist, define a transistor follows the convention: <model_ref><trans_name> <ports> <model_name>. The reference depends on the technology and the type of library. For example, the PTM bulk model uses “M” as the reference while the PTM FinFET model uses “X” as the reference.
***min_width:** specify the minimum width of p/n type transistor. This parameter will be used in building inverter, buffer, etc. as a base number for transistor sizing.
Technology library aims to describe transistor-level parameters to be applied to the physical design of FPGAs. In addition to transistor models, technology library also supports the definition of process variations on any transistor models.
Specify the technology library that defines the device model
-``type="academia|industry"`` For the industry library, FPGA-SPICE will use ``.lib <lib_file_path>`` to include the library file in SPICE netlists. For academia library, FPGA-SPICE will use ``.include <lib_file_path>`` to include the library file in SPICE netlists
-``corner="<string>"`` is the process corner name available in technology library.
For example, the type of transistors can be ``TT``, ``SS`` and ``FF``*etc*.
-``ref="<string>"`` specify the reference of in calling a transistor model. In SPICE netlists, define a transistor follows the convention:
..code-block:: xml
<model_ref><trans_name> <ports> <model_name>
The reference depends on the technology and the type of library. For example, the PTM bulk model uses “M” as the reference while the PTM FinFET model uses “X” as the reference.
-``path="<string>"`` specify the path of the technology library file. For example:
-``vdd="<float>"`` specify the working voltage for the technology. The voltage will be used as the supply voltage in all the SPICE netlists.
-``pn_ratio="<float>"`` specify the ratio between *p*-type and *n*-type transistors. The ratio will be used when building circuit structures such as inverters, buffers, etc.
-``name="<string>"`` specify the name of the p/n type transistor, which can be found in the manual of the technology provider.
-``chan_length="<float>"`` specify the channel length of *p/n* type transistor.
-``min_width="<float>"`` specify the minimum width of *p/n* type transistor. This parameter will be used in building inverter, buffer, *etc*. as a base number for transistor sizing.
-``variation="<string>"`` specify the variation name defined in the ``<variation_library>``
-``name="<string>"`` is the unique name of the device variation in the context of ``<variation_library>``. The name will be used in ``<device_model>`` to bind variations
-``abs_variation="<float>"`` is the absolute deviation of a variation
-``num_sigma="<int>"`` is the standard deviation of a variation