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參數資料
| 型號： | AM486DX |
| 英文描述： | Am486DX - Am486DX Block Diagram |
| 中文描述： | Am486DX - Am486DX框圖 |
| 文件頁數： | 48/52頁 |
| 文件大小： | 1242K |
| 代理商： | AM486DX |
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48
Am486DE2 Microprocessor
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 environ-
ment to determine whether the Am486DE2 micropro-
cessor is within the 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 Tempera-
ture.
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 15 for the
1.75 sq. in., 168-pin, ceramic PGA. For the 208-lead
SQFP plastic package,
θ
JA
= 14.0 and
θ
JC
= 1.5.
Table 16 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
fins or a heat sink to the package. Heat sink dimensions
are shown in Figure 47. P (the maximum power con-
sumption) is calculated by using the maximum I
CC
at
3.3 V as tabulated in the DC Characteristics
Figure 25. Test Signal Timing Diagram
相關PDF資料 |
PDF描述 |
|---|---|
| AM486DXPGA | Am486DX PGA - Am486DX PGA Package Temperature Comparisons |
| AM486DXSQFP | 70NS, PLCC, IND TEMP(EEPROM) |
| AM486 | Am486 Microprocessor Software User＇s Manual? 4.40MB (PDF) |
| AM49DL3208G | Am49DL3208G - Stacked Multi-Chip Package (MCP) Flash Memory and pSRAM |
| AM49DL320BG | Am49DL320BG - Stacked Multi-Chip Package (MCP) Flash Memory and SRAM |
相關代理商/技術參數 |
參數描述 |
|---|---|
| AM486DX/DX2 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Am486DX/DX2 Hardware Reference Manual |
| AM486DX2 | 制造商:AMD 制造商全稱:Advanced Micro Devices 功能描述:Am5X86⑩ Microprocessor Family |
| AM486DX2-66V16BGC | 制造商:Advanced Micro Devices 功能描述:MPU AM486 RISC 32-Bit 0.35um 66MHz 5V 168-Pin PGA |
| AM486DX2-66V16BGI | 制造商:Advanced Micro Devices 功能描述:MPU AM486 RISC 32-Bit 0.35um 66MHz 5V 168-Pin PGA |
| AM486DX2-66V16BHI | 制造商:Advanced Micro Devices 功能描述:MPU AM486 RISC 32-Bit 0.35um 66MHz 5V 208-Pin SQFP |
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