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272420-007 Datasheet(PDF) 7 Page - Intel Corporation |
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272420-007 Datasheet(HTML) 7 Page - Intel Corporation |
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7 / 56 page  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 2 channels (16450 compatible) Synchronous Serial I/O 1 channel, full duplex Timer/counter Unit 3 channels (82C54 compatible) I/O Ports 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 Processor Core |
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