參數(shù)資料
型號： AM486DE2-66V8TGC
廠商： ADVANCED MICRO DEVICES INC
元件分類： 微控制器/微處理器
英文描述： 8-Kbyte Write-Through Embedded Microprocessor
中文描述： 32-BIT, 66 MHz, MICROPROCESSOR, CPGA168
封裝： CERAMIC, PGA-168
文件頁數(shù)： 5/52頁
文件大?。?/td> 1094K
代理商： AM486DE2-66V8TGC
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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