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| MC908JB16DWE Datasheet, PDF (317/332 Pages) Freescale Semiconductor, Inc – Microcontrollers | |||
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Electrical Specifications
20.4 Functional Operating Range
Characteristic
Operating temperature range
Operating voltage range
Symbol
Value
Unit
TA
0 to 70
°C
VDD
4.0 to 5.5
V
20.5 Thermal Characteristics
Characteristic
Symbol
Value
Unit
Thermal Resistance
LQFP (32 pins)
SOIC (28 pins)
θJA
95
°C/W
70
I/O pin power dissipation
PI/O
User-Determined
W
Power dissipation(1)
Constant(2)
Average junction temperature
Maximum junction temperature
PD = (IDD Ã VDD) +
PD
(IDDA Ã VDDA) + PI/O =
W
K/(TJ + 273 °C)
K
PD x (TA + 273 °C)
+ PD2 à θJA
W/°C
TJ
TA + (PD à θJA)
°C
TJM
100
°C
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 TA and measure PD.
With this value of K, PD and TJ can be determined for any value of TA.
MC68HC908JB16 â Rev. 1.1
Freescale Semiconductor
Electrical Specifications
Technical Data
317
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