NXP Semiconductors MPC5748G - User LEDs (DS1, DS2, DS3, DS4); ADC Input Potentiometer (RVAR, RV1)

6.4.
User LED’s (DS1, DS2, DS3, DS4)
The user LED’s are
above the user
switches in the lower
right corner
There are four active low user LED’s, DS1 to DS4, connected directly to 4 MCU ports (PG[2..5]) as
shown below. No configuration is required to use the LED’s.
Table 6. Use LED’s (DS1, DS2, DS3 and DS4)
User LED
MCU Pin
DS1
PG2
DS2
PG3
DS3
PG4
DS4
PG5
6.5.
ADC Input Potentiometer (RVAR, RV1)
The ADC Pot is
above the hex
switch to the left of
the GPIO matrix
There is a small variable resistor RV1 on the LCEVB which routes a voltage between 0v and 3.3 V to
MCU pin PB4. This is useful for quick ADC testing. Test point RVAR can be used to probe the
voltage with a voltmeter.
Note that this circuit provides a very rough way to evaluate the ADC. There is a small current limiting
series resistor network to limit the injection current to around 4.4 mA.
MPC5748G Low Cost EVB User Guide, Rev. 1, 08/2016
16 NXP Semiconductors
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