Freescale Semiconductor MPC5748G EVB, User Manual

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User Interface (I/O)
MPC5748G EVB User Guide, User Guide, Rev. 0, 08/2015
Freescale Semiconductor, Inc. 27
8.2. User Switches (SW3, SW4, SW6, SW7, P22)
There are 4 active high (pulled low, driven to 3.3V) pushbutton switches (SW3, SW4, SW6, SW7)
connected to a 4 way header (P22) in a box titled “User Switches”. The switches are also directly
connected to MCU ports so no additional wiring is required unless you require to route these to a
different GPIO port.
The switches are connected as follows:
Table 20. User Pushbutton Switches (SW3, SW4, SW6, SW7)
Switch Number MCU Pin P18 Connection Pin
SW3
1 PA1 Pin1 (UpperMost)
SW4 2 PA2 Pin2
SW6 3 PF9 Pin3
SW7 4 PF11 Pin4
NOTE
The MCU ports used on the user pushbutton switches are also routed to
the GPIO matrix.
There are zero ohm resistors on the direct connections between each
switch and the MCU pins. These can be removed if required to isolate the
switch from the respective MCU pin (useful if the switch is being
manually routed to another pin on the GPIO matrix).
The user pushbutton
switches are in the
bottom left corner of
the EVB