NXP Semiconductors MPC5748G - Page 32

5
4
3
2
1
User Peripheralls (Led's, Switches and ADC Pot)
Switches are hard wired to 3.3V rather than 5V so it's not possible to drive 5V into a 3.3V pad (which would cause damage)
Similarly, the LED's are active low with 3.3v supply so can be safely coupled to pads on either 3.3V or 5V domains
The ADC input is limited to 3.3V, again to prevent driving 5V into a 3.3V pad which would cause damage
D
User LED's (Active Low)
ADC Input Pot and Test Point
PG[2..5] share eMIOS1
3V3_SR
3V3_SR
C
DS1
UC[11..14] with PWM
A
R129
270
functionality
DS2
R133
270
3
RV1 2K
1
Current limit resistors to ensure
7
PG2
PG2
(USR_LED1)
C
A
injection spec of 5mA is not
7
PG3
PG3
(USR_LED2)
2
RVAR
exceeded
7
PG4
PG4
(USR_LED3)
DS3
R131
270
GND
7
PG5
PG5
(USR_LED4)
C
A
1
R40
1.5K
DS4
R130
270
(ADC1_P[0])
PB4
PB4
7
C
A
LED's are SMD (1206) Yellow
R146
1.5K
Note that LED2 and LED4 (PG3 and PG5) can be
controlled in LPU_RUN mode (and also have pad
keepers in LPU_STANDBY)
Hex Encoded Switch (Active High)
C
3V3_SR
R92
SW1
1
(HEX_SW1)
PD0
PD0
7,15
C
B
C
D
E
A
2
(HEX_SW2)
PD1
PD1
7,15
100
9
F
8
0
4
(HEX_SW3)
PD2
PD2
7,15
1
7
6
5 4 3
2
8
(HEX_SW4)
PD3
PD3
7,15
DRS4016
R93
10.0K
R94
10.0K
R95
10.0K
R96
10.0K
GND
B
User Pushbutton Switches (Active High)
Note - PA1 is
3V3_SR
SW4
also the NMI pin!
1
2
(PB_SW1)
(eMIOS H / X)
PA1
PA1
7,15
1
2
(PB_SW2)
(eMIOS G / X)
PA2
PA2
7,15
R132
10.0K
SW5
R128
10.0K
OMRON B3WN-6002 Pushbutton Switch
GND
Automotive Microcontroller
Applications
A
East Kilbride, Scotland
NXP General Business Use
Drawing Title:
MPC5748G-LCEVB
Page Title:
User Peripherals
Size
Document Number
Rev
B
SCH-27897
PDF: SPF-27897
B
Date:
Friday, February 12, 2016
Sheet 14
of
15
D
C
B
A
5 4 3 2 1
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