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| MC68HC908RF2 Datasheet, PDF (235/254 Pages) Motorola, Inc – HCMOS Microcontroller Unit | |||
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Preliminary Electrical Specifications
Functional Operating Range
17.4 Functional Operating Range
Characteristic
Operating temperature range(1)
Operating voltage range
1. Extended temperature range to be determined
Symbol
TA
VDD
Min Max
â40 85
1.8 3.6
Unit
°C
V
17.5 Thermal Characteristics
Characteristic
Symbol
Value
Unit
Thermal resistance
LQFP (32 pin)
θJA
TBD
°C/W
I/O pin power dissipation
PI/O
User determined
W
Power dissipation(1)
PD
PD = (IDD x VDD) + PI/O =
K/(TJ + 273°C)
W
Constant(2)
K
PD x (TA + 273°C)
+ PD2 x θJA
W/°C
Average junction temperature
TJ
TA + (PD x θJA)
°C
Maximum junction temperature
TJM
100
°C
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 measured
PD. With this value of K, PD and TJ can be determined for any value of TA.
MC68HC908RF2 â Rev. 1
MOTOROLA
Preliminary Electrical Specifications
Advance Information
235
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