SC9S12XS256J1MAA FREESCALE [Freescale Semiconductor, Inc], SC9S12XS256J1MAA Datasheet - Page 661

• Manufacturer Part Number: SC9S12XS256J1MAA
• Description: HCS12 Microcontrollers
• Manufacturer: FREESCALE [Freescale Semiconductor, Inc]

The total power dissipation can be calculated from:
P
P
Two cases with internal voltage regulator enabled and disabled must be considered:
Freescale Semiconductor
IO
INT
P
R
D
1. Internal voltage regulator disabled
2. Internal voltage regulator enabled
R
is the sum of all output currents on I/O ports associated with V
DSON
P
DSON
=
=
IO
P
Chip Internal Power Dissipation, [W]
=
INT
=
∑
=
i
+
V
-------------------------------------- for outputs driven high
V
----------- - for outputs driven low
DD35
P
I
R
OL
OL
IO
DSON
I
OH
;
–
V
OH
⋅
I
P
IO i
INT
;
2
=
P
S12XS Family Reference Manual, Rev. 1.09
I
INT
DD
⋅
=
V
DD
I
DDR
+
I
⋅
DDPLL
V
DDR
⋅
+
V
I
DDA
DDPLL
⋅
V
DDA
+
I
DDX
DDA
, whereby
⋅
V
DDA
Electrical Characteristics
661