Freescale Semiconductor MPC5748G EVB, User Manual

Page: 81 / 88

5
5
4
4
3
3
2
2
1
1
D D
C C
B B
A A
Individual MCU
supply control
jumpers 3v3
Default Configuraiton:
- ALL MCU supply voltages are set to 3.3V (ADC0, ADC1, VDD_HV_A,
VDD_HV_B, VDD_HV_C, VBallast)
- VDD_HV_FLA = External 3.3V supplied (jumper fitted)
- VDD_LV Supplied from ballast transistor
This is not necessarily the same as the default shown in the RM. All
VDD_HV_x domains have at least one peripheral that only functions at
3.3V. Therefore the default is to run these from 3.3V. The analogue pins
can only be driven to the same voltage as the VDD_HV_x domain they are
situated in (ie max 3.3V) so makes sense for the analogue supply and
reference to be 3.3V
Ground Links
(0 Ohm
Resistors)
3v3 5v0 5v0 5v0 5v0 3v3 3v3
3v3
3v3 5v0
MPC5746C MCU Power Connections
Caution:
- If VDD_HV_A is driven from 5V, the VDD_HV_FLA pin
must not be supplied from 3.3V (remove the HVA_FLA
jumper)
- Don't attempt to over drive an analogue pad to 5V
when the digital VDD_HV_x supply is set to 3.3V. This
will trigger the ESD protectrion on that pad. For
example if VDD_HV_A is set to 3.3V and the analogue
supplies are set to 5V, you cannot drive 5V into a
pad in the VDD_HV_A domain
From MCU
supply
jumpers on
main board
MCU_3V3_S
MCU_5V0_S
MCU_1V25_L
MCU_3V3_L
MCU_5V0_L
H
VB_C
A
P
HV
FL
A
_
CA
P
LV_C
AP
AD
C
0_C
AP
AD
C
1_C
AP
A
DC1
RE
F_
CA
P
ADC0_GND ADC1_GND GND
H
VA_C
A
P
GND ADC0_GND GND ADC1_GND
E_C
A
P
B_C
A
P
L
V
DE
C_
CA
P
GND
HVA_CAP
GND
MCU_1V25_L 8
MCU_5V0_S 8
MCU_3V3_S 8
MCU_5V0_L 8
MCU_3V3_L 8
Drawing Title:
Size Document Number Rev
Date: Sheet of
Page Title:
Automotive Microcontroller
Applications
East Kilbride, Scotland
SCH-28701 PDF: SPF-28701 A1
MPC5746C 100 BGA Daughter Card
B
Tuesday, August 18, 2015
MPC5746C MCU Power
2 8
Freescale General Business Use
Drawing Title:
Size Document Number Rev
Date: Sheet of
Page Title:
Automotive Microcontroller
Applications
East Kilbride, Scotland
SCH-28701 PDF: SPF-28701 A1
MPC5746C 100 BGA Daughter Card
B
Tuesday, August 18, 2015
MPC5746C MCU Power
2 8
Freescale General Business Use
Drawing Title:
Size Document Number Rev
Date: Sheet of
Page Title:
Automotive Microcontroller
Applications
East Kilbride, Scotland
SCH-28701 PDF: SPF-28701 A1
MPC5746C 100 BGA Daughter Card
B
Tuesday, August 18, 2015
MPC5746C MCU Power
2 8
Freescale General Business Use
R35
0
J9
1
2
3
R37
1.0K
J8
HDR 1X2
1
2
R24
0
J5
1
2
3
R7 0
R10
0
1.25v Core & External Ballast Analogue
MPC5746C 100 BGA
Package 2of3 Power Pins
Flash
U1B
SKT BGA 100 TH + MPC574XG-100
V
RC_
CTRL
E1
VSS_D
1
D1
VSS_E4
E4
VSS_E5
E5
VSS_E6
E6
VSS_E7
E7
VSS_F
4
F4
VSS_F
5
F5
VSS_F
6
F6
VSS_F
7
F7
VSS_K4
K4
VSS_K7
K7
IN
T
_
BAL_SEL
E2
VD
D
_LV_D
5
D5
VD
D
_LV_D
6
D6
VD
D
_LV_G5
G5
VD
D
_LV_G6
G6
V
DD_
HV
_
A
_
D
4
D4
V
DD_
HV
_
A
_
G
4
G4
V
DD_
HV
_
A
_
D
7
D7
V
DD_
HV
_
B
_
E
8
E8
VSS_H
V
_AD
C
0
K9
V
DD_
HV
_
A
DC0
K10
V
DD_
HV
_
A
DC1
G10
VSS_H
V
_AD
C
1
H1
0
VD
D
_
H
V
_F
LA_H
3
H3
V
DD_
HV
_
A
DC1
_
R
E
F
H9
VD
D
_LP_D
EC
F2
VSS_VPP
D2
V
DD_
HV
_
A
_
G
7
G7
Q20
MJD31CT4
3
4
1
J3
1
2
3
J10
1
2
3
TPH2
1
J4
1
2
3
TPH1
1
J6
1
2
3
R9
0
J12
1
2
3