Low Power Near-sensor Coarse to Fine XOR based Memristive Edge Detection [Article]

https://ieeexplore.ieee.org/document/8649972In this paper, we propose XOR based memristive edge detector circuit that is integrated into a near sensor log-linear CMOS pixel. Memristor threshold logic was used to design NAND gates, which serve as a building block for XOR gates. For validation of proposed circuit functionality hardware simulation of logic gates with a pixel pair was conducted using TSMC 0.18um technology and system-level simulation of the proposed circuit using SPICE models. The proposed method operates in low power and takes a small area on chip. The power consumption of one pixel is 1.16uW and total area 36.72 um 2 without photosensing component. The power consumption of NAND circuit is 1.11pW and total area 32.4um 2