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17.4 Functional Operating Range
17.5 Thermal Characteristics
MC68HC(7)08KH12
Rev. 1.1
—
Freescale Semiconductor
Characteristic
Operating Temperature Range
Operating Voltage Range
Characteristic
Thermal Resistance
QFP (64 Pins)
I/O Pin Power Dissipation
(1)
Power Dissipation
(2)
Constant
Average Junction Temperature
Maximum Junction Temperature
NOTES
1. Power dissipation is a function of temperature.
2. K is a constant unique to the device. K can be determined for a known T
P
With this value of K, P
D.
Symbol
T
A
V
DD
Symbol
θ
JA
P
I/O
P
P
D
K
T
J
T
JM
and T
can be determined for any value of T
D
J
Value
0 to 85
4.0 to 5.5
Value
70
User Determined
= (I
x V
) + P
=
D
DD
DD
I/O
+ 273 °C)
K/(T
J
+ 273 °C)
P
x (T
D
A
2
× θ
+ P
JA
D
× θ
T
+ (P
)
JA
A
D
100
and measured
A
.
A
Advance Information
Unit
°C
V
Unit
°C/W
W
W
W/°C
°C
°C
249
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