Biomedical Engineering Reference
In-Depth Information
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Figure 6.7
Wiring of a well unit.
pathways, and reservoirs. Therefore, a total of 1284 control pins are needed
for direct addressing. In contrast, the design in Figure 6.6 only needs 5 pins
to control all the electrodes on the transportation pathways, thereby signifi-
cantly reducing the total number of control pins to 181.
The pin-constrained design using the Connect-5 method not only sig-
nificantly reduces the number of control pins but also provides an easy
wiring solution. According to Chapter 3, Section 3.1, electrodes sharing
the same pin in the pin-assignment result from the Connect-5 algorithm
are diagonally aligned. Therefore, they can be easily wired diagonally, as
shown in Figure 6.7. Moreover, the diagonal wiring allows the diameter to
be almost the same as the electrode pitch size, as illustrated in Figure 6.8.
Via
holes
Figure 6.8
Wiring of a well unit with large vias.
