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器件描述：Intel386 EX Embedded Microprocessor
器件厂商：INTEL [Intel Corporation]
厂商主页：http://www.intel.com/
文件大小：766.33KB
文件页数：56
PDF阅读：272420-007.pdf (点击阅读器件资料)
摘要：
Intel386? EX Embedded
Microprocessor
Datasheet
Product Features
This datasheet applies to devices marked EXTB and EXTC. If you require information about
devices marked EXSA or EXTA, refer to a previous revision of this datasheet, order number
272420-004.
a73 Static Intel386? CPU Core
—Low Power Consumption
—Operating Power Supply
EXTB: 2.7 V to 3.6 V
EXTC: 4.5 V to 5.5 V
—Operating Frequency
20 MHz EXTB at 2.7 V to 3.6 V
25 MHz EXTB at 3.0 V to 3.6 V;
25/33 MHz EXTC at 4.5 V to 5.5 V
a73 Transparent Power-management System
Architecture
—Intel System Management Mode
Architecture Extension for Truly
Compatible Systems
—Power Management Transparent to
Operating Systems and Application
Programs
—Programmable Power-management
Modes
a73 Powerdown Mode
—Clock Stopping at Any Time
—Only 10–20 ?A Typical CPU Sink
Current
a73 Full 32-bit Internal Architecture
—8-, 16-, 32-bit Data Types
—8 General Purpose 32-bit Registers
a73 Runs Intel386 Architecture Software in a
Cost-effective 16-bit Hardware
Environment
—Runs Same Applications and Operating
Systems as the Intel386 SX and Intel386
DX Processors
—Object Code Compatible with 8086,
80186, 80286, and Intel386 Processors
a73 High-performance 16-bit Data Bus
—Two-clock Bus Cycles
—Address Pipelining Allows Use of
Slower, Inexpensive Memories
a73 Extended Temperature Range
a73 Integrated Memory Management Unit
—Virtual Memory Support
—Optional On-chip Paging
—4 Levels of Hardware-enforced
Protection
—MMU Fully Compatible with MMUs of
the 80286 and Intel386 DX Processors
a73 Virtual 8086 Mode Allows Execution of
8086 Software in a Protected and Paged
System
a73 Large Uniform Address Space
—64 Megabyte Physical
—64 Terabyte Virtual
—4 Gigabyte Maximum Segment Size
a73 On-chip Debugging Support Including
Breakpoint Registers
a73 Complete System Development Support
a73 High Speed CHMOS Technology
a73 Two Package Types
—132-pin Plastic Quad Flatpack
—144-pin Thin Quad Flatpack
a73 Integrated Peripheral Functions
—Clock and Power Management Unit
—Chip-select Unit
—Interrupt Control Unit
—Timer/Counter Unit
—Watchdog Timer Unit
—Asynchronous Serial I/O Unit
—Synchronous Serial I/O Unit
—Parallel I/O Unit
—DMA and Bus Arbiter Unit
—Refresh Control Unit
—JTAG-compliant Test-logic Unit
Order Number: 272420-007
October 1998
相关器件：INTEL386 80386EX
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