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EasyARM v6
MikroElektronika
page
10. Push buttons
The logic level of all microcontroller input pins may be changed by using push buttons. Jumper J17 is used to determine
the logic level to be supplied on the appropriate microcontroller pin by pressing a push button. The function of the protec-
tive resistor is to limit the maximum current, thus preventing the development system and peripheral modules from being
damaged in case a short circuit occurs. If needed, advanced users may shorten this resistor by using jumper J16.
Figure 10-2
: Push buttons and port PORT0 connection schematic
Figure 10-1
: Push buttons
By pressing any push button when jumper J17 is in the VCC-3.3 position, a logic one (3.3V) will be applied to the ap-
propriate microcontroller pin, as shown in Figure 2.
