Figure 8-1
shows an application in which the TCAL6408 can be
used.
A. Device address configured as 0100000 for this example.
B. P0
and P2–P7 are configured as inputs.
C. P1
is configured as an output.
D. Resistors are required for inputs (on P port) that may float. If a driver to an
input will never let the input float, a resistor is not needed. Outputs (in the
P port) do not need pullup resistors.