Back To Basics On Multi-Voltage Verification

It has been more than a decade since the paradigm of voltage-aware Booleans came about and the world of multi-voltage verification took off. We started with 3-5 island SoCs and now stare at 300+ islands on a single SoC. While we have a well-developed standard (IEEE 1801/UPF) for the expression and analysis of voltage variation, it is apt to not forget some of the basics and see how they will ca... » read more

Is Low Power Coverage Achievable?

Back in 2005, yes, before the invention of the iPhone, I made a slide to educate users on what to cover in Low Power Verification. Using a simple 3 island test case, I illustrated that verification had to be done in 4 states of operation, with 8 transitions and 16 sequences to be verified. This is after pruning the theoretically possible set of 8 states for on/off voltage islands. More than ... » read more