The latest version of Electric requires Java 17 or later, so Version 8
is not sufficient, as you have discovered.
As for simulating SkyWater, it should be sufficient to have any version
of Spice, but it's possible that model cards will have to be crafted to
get things right. Electric supports many version of Spice. It can write
the Spice deck, then run Spice (if you tell it where Spice is located)
and even read the Spice output back in and display results in a waveform
window that can be cross-probed to the original schematic or layout. But
getting all of these steps right takes a bit of care. The user manual
will provide help (it's built into Electric) but your own experience
simulating SkyWater designs with your own version of Spice will be most
helpful.
-Steven Rubin
On 8/2/2025 7:53 PM, Gavin wrote:
Hi,
For electric-9.08.1.jar on the Electric VLSI website at [1], the
JAVA Version 8 Update 461 at [2] doesn't work. It does work with JDK
24 (e.g., jdk-24_windows-x64_bin.exe) at [3].
Yes, a SPICE simulator can be needed. The install instructions at [4]
likely will still work if you just replace instances of 9.07 with 9.08.1.
I've not used the SkyWater130 nm process with Electric VLSI myself.
However, it looks like you could try following the technology file
instructions at [5] (again by replacing instances of 9.07 with 9.08.1).
[1] https://www.staticfreesoft.com/productsFree.html
[2] https://www.java.com/en/download/
[3] https://www.oracle.com/java/technologies/downloads/#jdk24-windows
[4] https://cmosedu.com/cmos1/electric/electric_install.htm
[5] https://gitlab.com/westernsemico/com.westernsemico.vlsi
Kind Regards,
Gavin
Electric VLSI user
On Saturday, August 2, 2025 at 3:06:30 PM UTC-6 Arvind Gupta wrote:
Hi,
I am new to Electric EDA tool and want to use it to make
schematics and layouts using the Skywater130nm process. I had some
queries regarding the same and was hoping someone will answer them:
Can I use Electric to run simulations or do I need to integrate
another simulator like Ngpice with it? If yes, what is the process
pls? Also what is the process of integrating LTspice (latest
version) with Electric?
The layout editor has the option for loading the Skywater130nm
layout rules. Correspondingly, can one use the various transistors
available in the Sky 130 technology to make and run schematic
simulations pls? Also are the spice model card(s) available with
Electric for simulations?
I am asking the above two queries as the Skywater PDK is
available in Github (and seems to be available for Electric).
However, I don’t know how to compile the PDK in Windows and
integrate it with the Electric tool. Hence kindly help in this matter.
Thanks in advance,
Arvind Gupta.
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