The Physiologist's Friend Chip is a tool for educators and physiologists that electronically models the early visual system. This page holds the design of the friend23 chip, which is the most recent design dated 2001.
Layout of the Friend23 design. Die size is 2.2×2.2 mm and the photodiode sizes are about 163um wide and 190um high.
The PhysioFriend chip was designed by members of the Inst. of Neuroinformatics, including Elissabetta Chicca, Simon Bovet, Tobi Delbruck, Shih-Chii Liu, Giacomo Indiveri, and others.
We provide this design as a contribution to the neuromorphic engineering community. By using these design resources, you agree to the following terms: These designs are distributed under the terms of the GNU Public License (http://www.gnu.org/licenses/licenses.html - TOCGPL), with the following additions:
T. Delbruck, S.C. Liu. (2004). A silicon visual system as a model animal. Vision Research, vol. 44, issue 17, pp. 2083-2089