4 papers
Interplay between Excitability and Noise in Analog Spiking Neurons
Léopold Van Brandt, Alon Ascoli, Michele Bonnin +3
A spiking neuron is a dynamical system exhibiting a limit cycle (a spike) when subject to sufficiently excitatory input. Famous neuroscience experiments by Bryant and Segundo as we…
On the Excitability of Ultra-Low-Power CMOS Analog Spiking Neurons
Léopold Van Brandt, Grégoire Brandsteert, Denis Flandre
The excitability property of spiking neurons describes their capability to output an action potential as a real-time response to an input synaptic excitation current and is central…
Stochastic Nonlinear Dynamical Modelling of SRAM Bitcells in Retention Mode
Léopold Van Brandt, Denis Flandre, Jean-Charles Delvenne
SRAM bitcells in retention mode behave as autonomous stochastic nonlinear dynamical systems. From observation of variability-aware transient noise simulations, we provide an unidim…
Variability-Aware Noise-Induced Dynamic Instability of Ultra-Low-Voltage SRAM Bitcells
Léopold Van Brandt, Jean-Charles Delvenne, Denis Flandre
Stability of ultra-low-voltage SRAM bitcells in retention mode is threatened by two types of uncertainty: process variability and intrinsic noise. While variability dominates the f…