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MC68HC908QL4 Datasheet, PDF (204/226 Pages) Motorola, Inc – Microcontrollers
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Electrical Specifications
17.3 Functional Operating Range
Characteristic
Operating temperature range
Operating voltage range
Symbol
TA
(TL to TH)
VDD
Value
– 40 to +125
– 40 to +105
– 40 to +85
3.0 to 5.5
Unit
Temperature
Code
M
°C
V
C
V
—
17.4 Thermal Characteristics
Characteristic
Symbol
Value
Unit
Thermal resistance
16-pin SOIC
16-pin TSSOP
θJA
90
°C/W
133
I/O pin power dissipation
Power dissipation(1)
Constant(2)
Average junction temperature
Maximum junction temperature
PI/O
User determined
W
PD
PD = (IDD x VDD)
+ PI/O = K/(TJ + 273°C)
W
K
PD x (TA + 273°C)
+ PD2 x θJA
W/°C
TJ
TA + (PD x θJA)
°C
TJM
150
°C
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.
17.5 5-V DC Electrical Characteristics
Characteristic(1)
Output high voltage
ILoad = –2.0 mA, all I/O pins
ILoad = –10.0 mA, all I/O pins
ILoad = –15.0 mA, PTA0, PTA1, PTA3–PTA5 only
Maximum combined IOH (all I/O pins)
Output low voltage
ILoad = 1.6 mA, all I/O pins
ILoad = 10.0 mA, all I/O pins
ILoad = 15.0 mA, PTA0, PTA1, PTA3–PTA5 only
Maximum combined IOL (all I/O pins)
Input high voltage
PTA0–PTA5, PTB0–PTB7
Symbol
VOH
IOHT
VOL
IOHL
VIH
Min
VDD – 0.4
VDD – 1.5
VDD – 0.8
—
—
—
—
—
0.7 x VDD
Typ(2)
—
—
—
—
—
—
—
—
—
Max
—
—
—
50
0.4
1.5
0.8
50
VDD
Unit
V
mA
V
mA
V
Table continued on next page.
MC68HC908QL4 Data Sheet, Rev. 7
204
Freescale Semiconductor
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