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Electrical Characteristics
MFR4310 Reference Manual, Rev. 2
242
Freescale Semiconductor
The total power dissipation can be calculated from:
Eqn. A-2
P
INT
= Chip Internal Power Dissipation [W]
Two cases with internal voltage regulator enabled and disabled must be considered:
1. Internal Voltage Regulator disabled
Eqn. A-3
Eqn. A-4
P
IO
is the sum of all output currents on I/O ports associated with VDDX and VDDR.
For R
DSON
is valid:
Eqn. A-5
respectively
Eqn. A-6
2. Internal voltage regulator enabled
Eqn. A-7
I
DDR
and not the overall current flowing into VDDR, which
additionally contains the current flowing into the external loads with output high.
Eqn. A-8
P
IO
is the sum of all output currents on I/O ports associated with VDDX and VDDR.
P
D
P
INT
P
IO
+
=
P
INT
I
DD
V
DD
⋅
I
DDOSC
V
DDOSC
⋅
I
DDA
V
DDA
⋅
+
+
=
P
IO
R
DSON
I
IO
i
2
⋅
i
∑
=
R
DSON
V
OL
I
OL
----------
; for outputs driven low
=
R
DSON
V
DD5
V
OH
–
I
OH
------------------------------
; for outputs driven high
=
P
INT
I
DDR
V
DDR
⋅
I
DDA
V
DDA
⋅
+
=
P
IO
R
DSON
I
IO
i
2
⋅
i
∑
=
Содержание FlexRay MFR4310
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Страница 3: ...MFR4310 Reference Manual MFR4310RM Rev 2 03 2008...
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Страница 28: ...Introduction MFR4310 Reference Manual Rev 2 28 Freescale Semiconductor...
Страница 58: ...Device Overview MFR4310 Reference Manual Rev 2 58 Freescale Semiconductor...
Страница 222: ...Dual Output Voltage Regulator VREG3V3V2 MFR4310 Reference Manual Rev 2 222 Freescale Semiconductor...
Страница 234: ...Clocks and Reset Generator CRG MFR4310 Reference Manual Rev 2 234 Freescale Semiconductor...
Страница 260: ...Package Information MFR4310 Reference Manual Rev 2 260 Freescale Semiconductor...
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