3.11.2 Push Buttons
Two momentary push buttons are available on the board as general-purpose features, mapped to port P pins PP1 and PP2.
Both push buttons are connected in an active low configuration, pulled up to VDDX through a 4.7 kiloohm resistor each. To
enable each push button, a jumper must be populated on header J19 and J20, respectively.
Figure 25. User push button options
3.11.3 Switch
A SPDT mechanical switch is provided as a general-purpose feature, mapped to port PT1. It provides an active low input,
pulled up to VDDX through a 4.7 kiloohm resistor when the switch is in the “open” position. Because PT1 could be used as a
“Phase A” input from a Resolver, a Hall Sensor, or a Quadrature Encoder, care must be taken when populating the jumper on
J9 that links the SPDT switch to port PT1.
Figure 26. User switch option
Design Considerations
S12ZVM12EVB Evaluation Board User Guide, Rev. 2, 03/2016
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Freescale Semiconductor, Inc.