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參數(shù)資料
| 型號(hào)： | INTEL486 GX |
| 廠商： | Intel Corp. |
| 英文描述： | Emedded Ultra-Low Power INTEL486 GX Processor(嵌入式超低能量處理器) |
| 中文描述： | Emedded超低功耗英特爾486 GX處理器（嵌入式超低能量處理器） |
| 文件頁數(shù)： | 3/48頁 |
| 文件大?。?/td> | 409K |
| 代理商： | INTEL486 GX |
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Contents
iii
Embedded Ultra-Low Power Intel486
GX Processor
1.0 INTRODUCTION ........................................................................................................................................1
1.1 Features .............................................................................................................................................1
1.2 Family Members .................................................................................................................................3
2.0 HOW TO USE THIS DOCUMENT .............................................................................................................3
3.0 PIN DESCRIPTIONS .................................................................................................................................3
3.1 Pin Assignments .................................................................................................................................3
3.2 Pin Quick Reference ...........................................................................................................................7
4.0 ARCHITECTURAL AND FUNCTIONAL OVERVIEW .............................................................................15
4.1 Separate Supply Voltages ................................................................................................................15
4.2 Fast Clock Restart ............................................................................................................................16
4.3 Level-Keeper Circuits .......................................................................................................................17
4.4 Low-Power Features ........................................................................................................................18
4.4.1 Auto Clock Freeze .................................................................................................................18
4.5 Bus Interface and Operation .............................................................................................................19
4.5.1 16-Bit Data Bus ......................................................................................................................19
4.5.2 Parity ......................................................................................................................................19
4.5.3 Data Transfer Mechanism ......................................................................................................19
4.6 CPUID Instruction .............................................................................................................................27
4.6.1 Operation of the CPUID Instruction .......................................................................................27
4.7 Identification After Reset ..................................................................................................................29
4.8 Boundary Scan (JTAG) ....................................................................................................................29
4.8.1 Device Identification ...............................................................................................................29
4.8.2 Boundary Scan Register Bits and Bit Order ...........................................................................29
5.0 ELECTRICAL SPECIFICATIONS ...........................................................................................................30
5.1 Maximum Ratings .............................................................................................................................30
5.2 DC Specifications .............................................................................................................................30
5.3 AC Specifications .............................................................................................................................34
5.4 Capacitive Derating Curves ..............................................................................................................41
6.0 MECHANICAL DATA ..............................................................................................................................42
6.1 Package Dimensions ........................................................................................................................42
6.2 Package Thermal Specifications ......................................................................................................43
FIGURES
Figure 1.
Figure 2.
Figure 3.
Figure 4.
Figure 5.
Embedded Ultra-Low Power Intel486 GX Processor Block Diagram ...................................... i
Package Diagram for 176-Lead TQFP Package Embedded ULP Intel486 GX Processor ....4
Example of Supply Voltage Power Sequence .........................................................................16
Stop Clock State Diagram with Typical Power Consumption Values ......................................17
Logic to Generate A1, BHE# and BLE# ...................................................................................19
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