mc9s12c32mpb16 Freescale Semiconductor, Inc, mc9s12c32mpb16 Datasheet - Page 642

• Manufacturer Part Number: mc9s12c32mpb16
• Description: Hcs12 Microcontrollers
• Manufacturer: Freescale Semiconductor, Inc

Appendix A Electrical Characteristics
A.1.8
Power dissipation and thermal characteristics are closely related. The user must assure that the maximum
operating junction temperature is not exceeded. The average chip-junction temperature (T
obtained from:
The total power dissipation can be calculated from:
Two cases with internal voltage regulator enabled and disabled must be considered:
642
1. Internal Voltage Regulator disabled
2. Internal voltage regulator enabled
P
P
T
T
T
P
Θ
J
J
A
D
INT
D
JA
Which is the sum of all output currents on I/O ports associated with V
For R
respectively
I
additionally contains the current flowing into the external loads with output high.
Which is the sum of all output currents on I/O ports associated with V
DDR
=
=
=
=
=
=
T
Junction Temperature, [°C ]
Ambient Temperature, [°C ]
=
P
R
Total Chip Power Dissipation, [W]
R
P
P
P
P
Power Dissipation and Thermal Characteristics
A
Package Thermal Resistance, [°C/W]
INT
IO
INT
IO
DSON
INT
DSON
is the current shown in
Chip Internal Power Dissipation, [W]
DSON
+
(
=
=
P
+
=
=
D
∑
∑
P
is valid:
I
I
i
•
IO
i
=
=
DDR
DD
Θ
R
R
V
----------- - for outputs driven low
V
----------------------------------- - for outputs driven high
I
JA
OL
DSON
DSON
⋅
OL
DD5
V
⋅
)
DD
V
I
;
OH
DDR
–
+
V
⋅
⋅
I
I
I
OH
IO i
IO i
DDPLL
+
I
2
2
;
DDA
MC9S12C-Family / MC9S12GC-Family
Table A-8
⋅
⋅
V
V
DDPLL
DDA
and not the overall current flowing into VDDR, which
Rev 01.23
+
I
DDA
⋅
V
DDA
DDX
DDX
and V
and V
Freescale Semiconductor
DDM
DDR
J
) in °C can be
.
.