Motorola MC68020 User Manual

MOTOROLA M68020 USER’S MANUAL 10-1
The device contains circuitry to
protect the inputs against damage
due to high static voltages or electric
fields; however, normal precautions
should be taken to avoid application
of voltages higher than maximum-
rated voltages to these high-
impedance circuits. Tying unused
inputs to the appropriate logic
voltage level (e.g., either GND or
V
CC
) enhances reliability of
operation.
SECTION 10
ELECTRICAL CHARACTERISTICS
This section provides the thermal characteristics and electrical specifications for the
MC68020/EC020. Note that the thermal and DC electrical characteristics are listed
separately for the MC68020 and the MC68EC020. All other data applies to both the
MC68020 and the MC68EC020 unless otherwise noted.
10.1 MAXIMUM RATINGS
Rating Symbol Value Unit
Supply Voltage V
CC
–0.3 to +7.0 V
Input Voltage V
in
–0.5 to +7.0 V
Operating Temperature Range
Minimum Ambient Temperature
Maximum Ambient Temperature
PGA, PPGA, PQFP
Maximum Junction Temperature
CQFP
T
A
T
A
T
J
0
70
110
°C
°C
°C
Storage Temperature Range T
stg
–55 to 150 °C
10.2 THERMAL CONSIDERATIONS
The average chip-junction temperature, T
J
, in °C can be obtained from:
T
J
= T
A
+ (P
D
• θ
JA
) (10-1)
where:
T
A
= Ambient Temperature, °C
θ
JA
= Package Thermal Resistance, Junction-to-Ambient, °C/W
P
D
=P
INT
+ P
I/O
P
INT
=I
CC
X V
CC
, Watts—Chip Internal Power
P
I/O
= Power Dissipation on Input and Output Pins—User Determined
For most applications, P
I/O
< P
INT
and can be neglected.
An approximate relationship between P
D
and T
J
(if P
I/O
is neglected) is:
P
D
= K ÷ (T
J
+ 273°C) (10-2)

Motorola MC68020 Specifications

General

Brand	Motorola
Model	MC68020
Category	Computer Hardware
Language	English