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| MC68HC08JL3_05 Datasheet, PDF (183/198 Pages) Freescale Semiconductor, Inc – Microcontrollers | |||
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18.4 Functional Operating Range
Table 18-2. Operating Range
Characteristic
Symbol
Value
Unit
Operating temperature range
TA
â 40 to +125 â 40 to +85 °C
Operating voltage range
VDD
5V ± 10%
3V ± 10%
V
18.5 Thermal Characteristics
Table 18-3. Thermal Characteristics
Characteristic
Symbol
Value
Unit
Thermal resistance
20-Pin PDIP
20-Pin SOIC
28-Pin PDIP
28-Pin SOIC
70
°C/W
θJA
70
°C/W
70
°C/W
70
°C/W
I/O pin power dissipation
PI/O
User determined
W
Power dissipation(1)
Constant(2)
PD
PD = (IDD Ã VDD) + PI/O =
K/(TJ + 273 °C)
W
K
PD x (TA + 273 °C)
+ PD2 à θJA
W/°C
Average junction temperature
TJ
TA + (PD à θJA)
°C
Maximum junction temperature
TJM
100
°C
NOTES:
1. Power dissipation is a function of temperature.
2. K constant unique to the device. K can be determined for a known TA and measured
PD. With this value of K, PD and TJ can be determined for any value of TA.
MC68H(R)C08JL3 â Rev. 4.1
Freescale Semiconductor
Technical Data
183
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