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SECTION 6
ELECTRICAL CHARACTERISTICS
The AC specifications presented consist of output delays
signal skew times. All signals are specified relative to an appropriate edge of the clock (CL-
KO pin) and possibly to one or more other signals.
6.1 MAXIMUM RATINGS
Rating
Supply Voltage
Input Voltage
Operating Temperature Range
MC68302
MC68302C
Storage Temperature Range
6.2 THERMAL CHARACTERISTICS
Characteristic
Thermal Resistance for PGA
Thermal Resistance for CQFP
Thermal Resistance for PQFP
T
= T
+ (P
)
J
A
D
A
P
= (V
I
) + P
D
DD
DD
I/O
where:
P
is the power dissipation on pins.
I/O
For T
= 70 C and P
A
I/O
package, the worst case value of T
T
= 70 C + (5.5 V 30 mA 40 C/W) = 98.65C
J
MOTOROLA
Symbol
V
DD
V
in
T
A
T
stg
Symbol
JA
JC
JA
JC
JA
JC
+ 0 W, 16.67 MHz, 5.5 V, and CQFP
is:
J
MC68302 USER'S MANUAL
input setup and hold times
,
Value
Unit
- 0.3 to + 7.0
V
- 0.3 to + 7.0
V
0 to 70
C
- 40 to 85
- 55 to + 150
C
Value
Unit
25
C/W
2
C/W
40
C/W
15
C/W
42
C/W
20
C/W
This device contains circuitry to
protect the inputs against damage
due to high static voltages or elec-
tric fields; however, it is advised
that normal precautions be taken
to avoid application of any voltage
higher than maximum-rated volt-
ages to his high-impedance circuit.
Reliability of operation is en-
hanced if unused inputs are tied to
an appropriate logic voltage level
(e.g., either GND or V
)
DD
and
,
6-1
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