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JA80386EXTC25 Datasheet, PDF (1/56 Pages) Intel Corporation – Intel386™ EX Embedded Microprocessor | |||
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Intel386⢠EX Embedded
Microprocessor
Product Features
Datasheet
s Static Intel386⢠CPU Core
â Low Power Consumption
â Operating Power Supply
EXTB: 2.7 V to 3.6 V
EXTC: 4.5 V to 5.5 V
â 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
s Transparent Power-management System
Architecture
â Intel System Management Mode
Architecture Extension for Truly
Compatible Systems
â Power Management Transparent to
Operating Systems and Application
Programs
â Programmable Power-management
Modes
s Powerdown Mode
â Clock Stopping at Any Time
â Only 10â20 µA Typical CPU Sink
Current
s Full 32-bit Internal Architecture
â 8-, 16-, 32-bit Data Types
â 8 General Purpose 32-bit Registers
s Runs Intel386 Architecture Software in a
Cost-effective 16-bit Hardware
Environment
â Runs Same Applications and Operating
Systems as the Intel386 SX and Intel386
DX Processors
â Object Code Compatible with 8086,
80186, 80286, and Intel386 Processors
s High-performance 16-bit Data Bus
â Two-clock Bus Cycles
â Address Pipelining Allows Use of
Slower, Inexpensive Memories
s Extended Temperature Range
s Integrated Memory Management Unit
â Virtual Memory Support
â Optional On-chip Paging
â 4 Levels of Hardware-enforced
Protection
â MMU Fully Compatible with MMUs of
the 80286 and Intel386 DX Processors
s Virtual 8086 Mode Allows Execution of
8086 Software in a Protected and Paged
System
s Large Uniform Address Space
â 64 Megabyte Physical
â 64 Terabyte Virtual
â 4 Gigabyte Maximum Segment Size
s On-chip Debugging Support Including
Breakpoint Registers
s Complete System Development Support
s High Speed CHMOS Technology
s Two Package Types
â 132-pin Plastic Quad Flatpack
â 144-pin Thin Quad Flatpack
s Integrated Peripheral Functions
â Clock and Power Management Unit
â Chip-select Unit
â Interrupt Control Unit
â Timer/Counter Unit
â Watchdog Timer Unit
â Asynchronous Serial I/O Unit
â Synchronous Serial I/O Unit
â Parallel I/O Unit
â DMA and Bus Arbiter Unit
â Refresh Control Unit
â JTAG-compliant Test-logic Unit
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.
Order Number: 272420-007
October 1998
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