A 320 x 320 1/5” BSI-CMOS stacked event sensor for low-power vision applications

Event vision sensors acquire sparse data, making them suited for edge vision applications. However, unconventional data format, nonconstant data rates and non-standard interfaces restrain wide adoption. A $320\times 320 ~6.3 \mu \mathrm{m}$ pixel BSI stacked event sensor, specifically designed for embedded vision, features multiple data pre-processing, filtering and formatting functions, variable MIPI and CPI interfaces and a hierarchy of power modes, facilitating operability in power-sensitive vision applications.