EN80C186EA13 데이터 시트보기 (PDF) - Intel

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EN80C186EA13

16-Bit High-Integration Embedded Processors

Intel 

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Introduction

Introduction

Unless specifically noted, all references to the Intel® 80C186EA apply to the Intel® 80C188EA,

Intel® 80L186EA, and Intel® 80L188EA. References to pins that differ between the Intel®

80C186EA/80L186EA and the Intel® 80C188EA/ 80L188EA are given in parentheses. The “L” in

the part number denotes low voltage operation. Physically and functionally, the “C” and “L”

devices are identical.

The 80C186EA is the second product in a new generation of low-power, high-integration

microprocessors. It enhances the existing Intel® 80C186XL family by offering new features and

operating modes. The 80C186EA is object code compatible with the 80C186XL embedded

processor.

The 80L186EA is the 3V version of the 80C186EA. The 80L186EA is functionally identical to the

80C186EA embedded processor. Current 80C186EA customers can easily upgrade their designs to

use the 80L186EA and benefit from the reduced power consumption inherent in 3V operation.

The feature set of the 80C186EA/80L186EA meets the needs of low-power, space-critical

applications. Low-power applications benefit from the static design of the CPU core and the

integrated peripherals as well as low voltage operation. Minimum current consumption is achieved

by providing a Powerdown Mode that halts operation of the device, and freezes the clock circuits.

Peripheral design enhancements ensure that non-initialized peripherals consume little current.

Space-critical applications benefit from the integration of commonly used system peripherals. Two

flexible DMA channels perform CPU-independent data transfers. A flexible chip select unit

simplifies memory and peripheral interfacing. The interrupt unit provides sources for up to

128 external interrupts and will prioritize these interrupts with those generated from the on-chip

peripherals. Three general purpose timer/counters round out the feature set of the 80C186EA.

Figure 1 shows a block diagram of the 80C186EA/ 80C188EA. The Execution Unit (EU) is an

enhanced 8086 CPU core that includes: dedicated hardware to speed up effective address

calculations, enhance execution speed for multiple-bit shift and rotate instructions and for multiply

and divide instructions, string move instructions that operate at full bus bandwidth, ten new

instructions, and static operation. The Bus Interface Unit (BIU) is the same as that found on the

original 80C186 family products. An independent internal bus is used to allow communication

between the BIU and internal peripherals.

Product Name Datasheet

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