- 您现在的位置：买卖IC网 > PDF目录362733 > Enhanced Am486 dx2 (Advanced Micro Devices, Inc.) High-Performance Design On-Chip Integration Complete 32-Bit Architecture Micrprocessor(高性能单片32位微处理器) PDF资料下载
参数资料
| 型号： | Enhanced Am486 dx2 |
| 厂商： | Advanced Micro Devices, Inc. |
| 英文描述： | High-Performance Design On-Chip Integration Complete 32-Bit Architecture Micrprocessor(高性能单片32位微处理器) |
| 中文描述： | 高性能设计的片上集成完整的32位架构Micrprocessor（高性能单片32位微处理器） |
| 文件页数： | 67/69页 |
| 文件大小： | 1068K |
| 代理商： | ENHANCED AM486 DX2 |
第1页第2页第3页第4页第5页第6页第7页第8页第9页第10页第11页第12页第13页第14页第15页第16页第17页第18页第19页第20页第21页第22页第23页第24页第25页第26页第27页第28页第29页第30页第31页第32页第33页第34页第35页第36页第37页第38页第39页第40页第41页第42页第43页第44页第45页第46页第47页第48页第49页第50页第51页第52页第53页第54页第55页第56页第57页第58页第59页第60页第61页第62页第63页第64页第65页第66页当前第67页第68页第69页
AMD
67
PRELIMINARY
Enhanced Am486 Microprocessor
12
PACKAGE THERMAL
SPECIFICATIONS
The Am486 microprocessor is specified for operation
when T
CASE
(the case temperature) is within the range
of 0
°
C to +85
°
C. T
CASE
can be measured in any envi-
ronment to determine whether the Am486 microproces-
sor is within specified operating range. The case
temperature should be measured at the center of the
top surface opposite the pins.
The ambient temperature (T
A
) is guaranteed as long as
T
CASE
is not violated. The ambient temperature can be
calculated from
θ
JC
and
θ
JA
and from the following equa-
tions:
T
J
= T
CASE
+ P
θ
JC
T
A
= T
J
– P
θ
JA
T
CASE
= T
A
+ P [
θ
JA
–
θ
JC
]
where:
T
J
, T
A
, T
CASE
= Junction, Ambient, and Case Temperature.
θ
JC
,
θ
JA
= Junction-to-Case and Junction-to-Ambient
Thermal Resistance, respectively.
P
= Maximum Power Consumption
The values for
θ
JA
and
θ
JC
are given in Table 21 for the
1.75 sq. in., 168-pin, ceramic PGA. For the 208-pin
SQFP plastic package,
θ
JA
= 14.0 and
θ
JC
= 1.5.
Table 22 shows the T
A
allowable (without exceeding
T
CASE
) at various airflows and operating frequencies
(Clock). Note that T
A
is greatly improved by attaching a
heat sink to the package. P (the maximum power con-
sumption) is calculated by using the maximum I
CC
at
3.3 V as tabulated in the DC Characteristics
*0.350
″
high unidirectional heat sink (Al alloy 6063-T5, 40 mil fin width, 155 mil center-to-center fin spacing).
Table 21. Thermal Resistance (°C/W)
θ
JC
and
θ
JA
for the Am486 CPU in 168-Pin PGA Package
Cooling
Mechanism
θ
JC
θ
JA
vs. Airflow-ft/min. (m/sec)
200
(1.01)
16.5
14.0
0 (0)
400
(2.03)
12.0
600
(3.04)
10.5
800
(4.06)
9.5
1000
(5.07)
9.0
No Heat Sink
1.5
Heat Sink*
2.0
12.0
7.0
5.0
4.0
3.5
3.25
Heat Sink* and fan
2.0
5.0
4.6
4.2
3.8
3.5
3.25
Table 22. Maximum T
A
at Various Airflows in
°
C
Airflow-ft/min. (m/sec)
200
(1.01)
52.3
57.8
63.2
74.1
60.3
72.6
58.6
71.8
52.0
68.5
45.4
65.2
78.5
79.3
77.6
78.6
77.1
78.1
75.1
76.4
73.1
74.7
T
A
by Cooling
Type
Clock
0 (0)
400
(2.03)
62.1
78.5
77.6
77.1
75.1
73.1
80.2
79.6
79.2
77.7
76.3
600
(3.04)
65.4
80.6
80.1
79.7
78.4
77.1
81.1
80.5
80.2
79.1
77.9
800
(4.06)
67.6
81.7
81.3
81.0
80.1
79.1
81.7
81.3
81.0
80.1
79.1
1000
(5.07)
68.7
82.3
81.9
81.7
80.9
80.1
82.3
81.9
81.7
80.9
80.1
T
A
without Heat Sink
66 MHz
66 MHz
75 MHz
80 MHz
100 MHz
120 MHz
66 MHz
75 MHz
80 MHz
100 MHz
120 MHz
T
A
with Heat Sink
T
A
with Heat Sink and
fan
相关PDF资料 |
PDF描述 |
|---|---|
| Enhanced Am486 dx4 | High-Performance Design On-Chip Integration Complete 32-Bit Architecture Micrprocessor(高性能设计片上集成完全32位体系微处理器) |
| EO12 | IRDA INFRARED TRANSCEIVER |
| EOL-62L256 | HT62L256 EOL Notification |
| EP05FA20 | FRD |
| EP05Q03L | SBD |
相关代理商/技术参数 |
参数描述 |
|---|---|
| ENHSAURR8 | 制造商:Molex 功能描述:8 PORT MACHINE MOUNT SWITCH 制造商:Molex 功能描述:COMPUTERS, NETWORK SWITCHES CONNECTIVITY, No. of Ports:8, Data Rate Max:100Mbps, |
| ENHSDURR5 | 制造商:Molex 功能描述:COMPUTERS, NETWORK SWITCHES CONNECTIVITY, No. of Ports:5, Switch Mounting:DIN Ra 制造商:Molex 功能描述:ETHERNET DIN RAIL SWITCH 5PORT |
| ENHSDURR9 | 制造商:MOLEX/WOODHEAD 功能描述:Ethernet Network Switch 制造商:Molex 功能描述:ETHERNET NETWORK SWITCH, No. of Ports:9, Data Rate Max:100Mbps, Switch Mounting: |
| ENI-110 | 功能描述:冲压机与冲模 NON-IMPACT PUNCHDOWN TOOL RoHS:否 制造商:Souriau 大小: 产品:Dies 类型:Crimping 描述/功能: |
| ENICSF2811PBKA | 制造商:Texas Instruments 功能描述: |
发布紧急采购，3分钟左右您将得到回复。