參數(shù)資料
型號(hào)： AM486DXPGA
英文描述： Am486DX PGA - Am486DX PGA Package Temperature Comparisons
中文描述： Am486DX美巡賽- Am486DX PGA封裝溫度比較
文件頁(yè)數(shù)： 5/52頁(yè)
文件大?。?/td> 1242K
代理商： AM486DXPGA
Am486DE2 Microprocessor
5
WB/WT (New)......................................................................................................................................16
W/R......................................................................................................................................................16
Functional Description................................................................................................................................17
Overview..............................................................................................................................................17
Memory................................................................................................................................................17
Modes of Operation .............................................................................................................................17
Write-Through Cache Architecture ......................................................................................................17
Cache Replacement Description .........................................................................................................17
Memory Configuration .........................................................................................................................17
Clock Control..............................................................................................................................................18
Clock Generation.................................................................................................................................18
Stop Clock ...........................................................................................................................................18
Stop Grant Bus Cycle ..........................................................................................................................19
Pin State During Stop Grant ................................................................................................................19
Clock Control State Diagram ...............................................................................................................20
SRESET Function......................................................................................................................................20
System Management Mode .......................................................................................................................22
Overview..............................................................................................................................................22
Terminology.........................................................................................................................................22
System Management Interrupt Processing..........................................................................................22
Entering System Management Mode ..................................................................................................26
Exiting System Management Mode.....................................................................................................27
Processor Environment .......................................................................................................................27
Executing System Management Mode Handler ..................................................................................28
SMM System Design Considerations ..................................................................................................31
SMM Software Considerations ............................................................................................................34
Test Registers 4 and 5 Modifications.........................................................................................................36
TR4 Definition......................................................................................................................................36
TR5 Definition......................................................................................................................................36
Am486DE2 Microprocessor Functional Differences...................................................................................37
Am486DE2 Microprocessor Identification..................................................................................................37
DX Register at RESET ........................................................................................................................37
CPUID Instruction................................................................................................................................37
Electrical Data............................................................................................................................................39
Power Connections..............................................................................................................................39
Power Decoupling Recommendations.................................................................................................39
Other Connection Recommendations..................................................................................................39
Absolute Maximum Ratings........................................................................................................................40
Operating Ranges......................................................................................................................................40
DC Characteristics over Commercial Operating Ranges...........................................................................40
Switching Characteristics over Commercial Operating Ranges.................................................................41
Switching Characteristics for 33-MHz Bus (66-MHz Microprocessor).................................................42
Switching Waveforms ..........................................................................................................................43
Package Thermal Specifications................................................................................................................48
Physical Dimensions..................................................................................................................................50
168-Pin PGA........................................................................................................................................50
208-Lead SQFP...................................................................................................................................51
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AM486DXSQFP 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Am486DX SQFP - Am486DX SQFP Package Temperature Comparisons
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AM4890N 制造商:ANALOGPOWER 制造商全稱:ANALOGPOWER 功能描述:Dual N-Channel 150-V (D-S) MOSFET
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