I would like to know what are the simulator settings you use for a "memory instance" typ simulation (transient simu of ~5ns), with just the checking of an output bit, for the sensing operation.
My memory instance is a the smallest instance in terms of bitcells. It means it's "far" below than 1M bits.
Of course there is a "MUX strategy" inside the memory instance, and for the sensing, there is a "sense amplifier + comparator", plus a "biasgen and a clkgen" blocks, and I would say all these three must be simulated at analog point of view.
The simu results, I am checking, are more or less :
-output bit of the comparator
-2 inputs of the sense amplifier (one input coming from the ref and the other from the sensed bitcell)
I am using the following settings :
-ULTRASIM (Cadence) :
usim_opt sim_mode=a inst= sense_amplifier_block or I can put the three blocks (SA, clkgen, bisagen) as analog. The simu results are almost the same.
with ULTRASIM : in full-analog mode :
it takes almost a day and I have very different results.
My issue, is that I have different results according ot the simulator settings, and I am not sure of which ones are golden.
thanks a lot or any help !!