AM486DX2-66V16BHC AMD (ADVANCED MICRO DEVICES), AM486DX2-66V16BHC Datasheet - Page 64

• Manufacturer Part Number: AM486DX2-66V16BHC
• Manufacturer: AMD (ADVANCED MICRO DEVICES)

Specifications of AM486DX2-66V16BHC

• Family Name: Am486
• Device Core Size: 32b
• Frequency (max): 66MHz
• Instruction Set Architecture: RISC
• Supply Voltage 1 (typ): 3.3V
• Operating Supply Voltage (max): 3.6V
• Operating Supply Voltage (min): 3V
• Operating Temp Range: 0C to 85C
• Operating Temperature Classification: Commercial
• Mounting: Surface Mount
• Pin Count: 208
• Package Type: SQFP
• Lead Free Status / Rohs Status: Not Compliant

64
12
The Enhanced Am486DX microprocessors are speci-
fied for operation when T
within the range of 0 C to +85 C. T
in any environment to determine whether the Enhanced
Am486DX microprocessors are within specified operat-
ing range. The case temperature should be measured
at the center of the top surface opposite the pins.
The ambient temperature (T
T
calculated from
T
T
T
where:
Note:
*0.350 high unidirectional heat sink (Al alloy 6063-T5, 40 mil fin width, 155 mil center-to-center fin spacing)
Table 23. Thermal Resistance (°C/W)
T
T
T
T
T
T
T
T
T
T
T
T
T
T
T
T
T
J
A
CASE
CASE
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
= T
No Heat Sink
Heat Sink*
Heat Sink* and fan
= T
by Cooling Type
without Heat Sink
with Heat Sink
with Heat Sink and Fan
without Heat Sink
with Heat Sink
with Heat Sink and Fan
without Heat Sink
with Heat Sink
with Heat Sink and Fan
by Cooling Type
without Heat Sink
with Heat Sink
with Heat Sink and Fan
without Heat Sink
with Heat Sink
with Heat Sink and Fan
Mechanism
CASE
= T
J
is not violated. The ambient temperature can be
– P •
Cooling
PACKAGE THERMAL SPECIFICATIONS
A
+ P •
+ P • [
Table 24. Maximum T
Table 25. Maximum T
JA
JC
JA
JC
–
and
JC
]
CASE
JA
1.5
2.0
2.0
JC
and from these equations:
133 MHz 38.9
133 MHz 54.3
133 MHz 75.8
100 MHz 50.4
100 MHz 61.9
100 MHz 78.1
100 MHz 65.4
100 MHz 76.9
100 MHz 93.1
A
66 MHz
66 MHz
66 MHz
66 MHz
66 MHz
66 MHz
) is guaranteed as long as
Clock
Clock
(the case temperature) is
CASE
Enhanced Am486DX Microprocessor Family
A
A
at Various Airflows in C for Commercial Temperatures (85 C)
at Various Airflows in C for Industrial Temperatures (100 C)
can be measured
0 (0) 200 (1.01)
0 (0) 200 (1.01)
62.1
69.8
80.4
77.1
84.8
95.4
16.5
12.0
(0)
5.0
0
JC
and
P R E L I M I N A R Y
46.6
69.6
77.0
56.1
73.5
79.0
65.9
77.4
81.0
71.1
88.5
80.9
92.4
94
96
JA
for the Enhanced Am486DX CPU in 168-Pin PGA Package
(1.01)
14.0
200
7.0
4.6
400 (2.03)
400 (2.03)
PGA: Airflow- ft/Min (m/sec)
PGA: Airflow- ft/Min (m/sec)
JA
52.7
75.8
78.2
60.7
78.1
79.9
69.0
80.4
81.6
75.7
93.1
94.9
95.4
96.6
84
T
P
The values for
1.75 sq. in., 168-pin, ceramic PGA. For the 208-pin
SQFP plastic package,
Table 24 and Table 25 show the T
exceeding T
various airflows and operating frequencies (Clock). Note
that T
sink to the package. P (the maximum power consump-
tion) is calculated by using the maximum I
tabulated in the DC Characteristics .
vs. Airflow-Linear ft/min. (m/sec)
JC
J
, T
,
A
JA
, T
(2.03)
A
12.0
400
5.0
4.2
600 (3.04)
600 (3.04)
CASE
is greatly improved by attaching fins or a heat
57.3
78.9
79.5
64.2
80.4
80.8
71.3
82.0
82.3
79.2
95.4
95.8
86.3
97.3
97
CASE
= Junction, Ambient, and Case Temperature
= Junction-to-Case and Junction-to-Ambient
= Maximum Power Consumption
Thermal Resistance, respectively
JA
of 85 C and 100 C, respectively) at
and
800 (4.06)
800 (4.06)
(3.04)
10.5
600
4.0
3.8
60.4
80.4
80.4
66.5
81.5
81.5
72.8
82.7
82.7
81.5
96.5
96.5
87.8
97.7
97.7
JC
JA
are given in Table 23 for the
= 14.0 and
1000 (5.07)
1000 (5.07)
(4.06)
800
9.5
3.5
3.5
62.0
81.2
81.2
67.7
82.1
82.1
73.6
83.1
83.1
82.7
97.1
97.1
88.6
98.1
98.1
A
allowable (without
JC
CC
= 1.5.
SQFP: No
SQFP: No
at 3.3 V as
Airflow
Airflow
(5.07)
1000
3.25
3.25
9.0
45
66
82
55
71
83
65
75
83
70
86
98
80
90
98