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Chapter 25
Power Supply Scheme
Preliminary User’s Manual U17566EE1V2UM00
25.2.2
Devices µPD70F3424, µPD70F3425, µPD70F3426
Figure 25-3
gives an overview of the allocation of power supply pins of the
µPD70F3424, µPD70F3425, µPD70F3426 devices. Their functional
assignment is depicted in more detail in
Figure 25-4
.
Note
The diagrams do not show the exact pin location.
Figure 25-3
Power supply pins for µPD70F3424, µPD70F3425, µPD70F3426
Figure 25-4
Functional assignment of power supply pins (µPD70F3424, µPD70F3425,
µPD70F3426)
ADC
VC
A
V
R
E
F
A
V
D
D
A
V
S
S
CPU
RAM
Flash
S
tandard I
/O
Reg
ulator 0
B
V
D
D
5
0
B
V
S
S
5
0
VSS50
VDD50
REGC0
S
M
V
S
S
5
1
S
M
V
D
D
5
1
S
M
V
S
S
5
0
S
M
V
D
D
5
0
VDD52
REGC2
VSS52
VSS51
REGC1
VDD51
BVSS50
BVDD50
Stepper Motor I/O
ClockGen
Peripherals
POC
Regulator
1
LCD Bus I/F I/O
DV
DD50
DV
SS50
BV
DD51
BV
SS51
Reg
0
REGC2
REGC1
REGC0
VDD50
VDD51
VSS50
VSS51
Peripherals
ClockGen
POC
VDD52
VSS52
I/O
Buffer
BVDD50
BVDD51
BVSS50
BVSS51
LCD-I/F
I/O
Buffer
DVDD50
DVSS50
Stepper
Motor
Buffer
SMVDD50
SMVDD51
SMVSS50
SMVSS51
ADC
AVDD
A
VREF
AVSS
Core
Voltage
Compa-
rators
Reg
1
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