BIOMIMETIC CORTICAL NANOCIRCUITS - Bio-Inspired and Nanoscale Integrated Computing - page 471

Window 3

Window 2

Window 1

(a)

n1 n1 n1

n2 n2 n2 n2 n2

Side

Vertical
connection
window

Vertical
connection
window

Side

Pitch

Vertical
connection
window

Vertical
connection
window

(b)

Figure 17.8. (a) The pyramidal window structure [80]. (b) The arrangement of
contacts for maximum connections to a core [80].

In order to provide a mathematical pyramidal model of interconnections, we
first identify parameters. We assume the following:

The area A of the core C is H H.
The distance from the edge of the area A to the first available layer of metal
is E.
S i is the minimum spacing between metal i windows.
D i is the minimum size of metal i windows.
L i is the minimum spacing between the metal i windows and the metal i+1
windows.