Terra Incognita & Transformerless Power

Terra Incognita & Transformerless Power

One of my recent projects involves a microcontroller circuit powered from AC mains. The project is heavily cost constrained, so my first reaction was to educate myself a bit on transformerless power supplies (converting 110Vrms AC into 3.3V DC without…

Atmel's 128RFA1 and the joy that is QFN

Atmel’s 128RFA1 and the joy that is QFN

My latest undertaking, and the inaugural project of my new home workshop, is built upon Atmel’s Atmega128RFA1 chip.  Being a Microchip follower for the last decade, I was hesitant at first to jump into the Atmel pool.  After a week…

Deperlify now on VLSI Tools

Deperlify now on VLSI Tools

Deperlify (“De – Perl – ify”), the newest addition to the VLSI Tools family, is now up on the website thanks to some help from Dave Fick. Deperlify allows you to embed Perl blocks into your Verilog code, and a…

Adding Case Sensitivity to Calibre

Adding Case Sensitivity to Calibre

One annoyance that has been plaguing me for quite some time is the case insensitivity that is default to Calibre (PEX, LVS, etc.).  The claim is that case sensitivity is a bad design practice (true), but that doesn’t mean that…

Parametric Analysis With OCEAN

For most simulations I need to run, I try and avoid SKILL and OCEAN if at all possible.  I can usually achieve the same results easier and faster using Python.  Yesterday however, I decided to run a parametric transient analysis…