參數資料
型號: 272420-007
廠商: Intel Corp.
英文描述: Intel386 EX Embedded Microprocessor
中文描述: 英特爾386防爆嵌入式微處理器
文件頁數: 7/56頁
文件大?。?/td> 766K
代理商: 272420-007
Intel386 EX Embedded Microprocessor
Datasheet
7
1.0
Introduction
The Intel386 EXTB embedded processor operates at 20 or 25 MHz at 3 Volts nominal. The
Intel386 EXTC embedded processor operates at 25 or 33 MHz at 5 Volts. In this datasheet,
“Intel386 EX processor” refers to both the Intel386 EXTB and EXTC processors.
The Intel386 EX embedded processor is a highly integrated, 32-bit, fully static processor optimized
for embedded control applications. With a 16-bit external data bus, a 26-bit external address bus,
and Intel’s System Management Mode (SMM), the Intel386 EX microprocessor brings the vast
software library of Intel386 architecture to embedded systems. It provides the performance benefits
of 32-bit programming with the cost savings associated with 16-bit hardware systems.
Figure 1.
Intel386 EX Embedded Processor Block Diagram
A2849-02
JTAG Unit
Clock and Power
Management Unit
DRAM Refresh
Control Unit
Watchdog Timer Unit
Bus Monitor
Asynchronous Serial I/O
(162 channels
Synchronous Serial I/O
1 channel, full duplex
Tim3 channels
(82C54 compatible)
I/O Ports
D
A
Bus Interface
Unit
Intel386 CX Core
Core Enhancements
- A20 Gate
- CPU Reset
- SMM
Chip-select
Unit
Interrupt Control Unit
DMA Controller
2 channels
(8237A compatible)
and Bus Arbiter Unit
INTR
Address
Data
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