USING COHERENT PULSE WIDTH AND EDGE MODULATIONS IN ARTIFICIAL NEURAL SYSTEMS

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Abstract
This paper describes an existing silicon implementation of an artificial neural system based on coherent pulse width and edge modulation techniques. A chip set with different neural functions has been conceived, manufactured and tested. Neural circuits have been optimized for lowest computation energy and highest reconfigurability. The main device is a 32 × 32 synaptic array consuming 10 mW of power at 140 MCPS. Synapsis size is about 7.200 μ m 2 using a standard 1.5 μm CMOS technology. The problem of interfacing robotic sensors and actuators is addressed: voltage, current and resistance-based sensors are considered for the measurement of physical quantities such as temperature, pressure, strain, etc. Low resolution imaging sensors for robotic vision are also considered.

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