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Intel 80L186EA User Manual

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80C186EA 80C188EA 80L186EA 80L188EA

80C186EA 80C188EA AND 80L186EA 80L188EA

16-Bit High Integration Embedded Processor

CONTENTS

PAGE

INTRODUCTION

4

80C186EA CORE ARCHITECTURE

4

Bus Interface Unit

4

Clock Generator

4

80C186EA PERIPHERAL

ARCHITECTURE

5

Interrupt Control Unit

5

Timer Counter Unit

5

DMA Control Unit

7

Chip-Select Unit

7

Refresh Control Unit

7

Power Management

7

80C187 Interface (80C186EA Only)

8

ONCE Test Mode

8

DIFFERENCES BETWEEN THE

80C186XL AND THE 80C186EA

8

Pinout Compatibility

8

Operating Modes

8

TTL vs CMOS Inputs

8

Timing Specifications

8

PACKAGE INFORMATION

9

Prefix Identification

9

Pin Descriptions

9

80C186EA Pinout

15

CONTENTS

PAGE

PACKAGE THERMAL

SPECIFICATIONS

20

ELECTRICAL SPECIFICATIONS

21

Absolute Maximum Ratings

21

Recommended Connections

21

DC SPECIFICATIONS

22

I

CC

versus Frequency and Voltage

24

PDTMR Pin Delay Calculation

24

AC SPECIFICATIONS

25

AC Characteristics

80C186EA20 13

25

AC Characteristics

80L186EA13 8

27

Relative Timings

29

AC TEST CONDITIONS

30

AC TIMING WAVEFORMS

30

DERATING CURVES

33

RESET

33

BUS CYCLE WAVEFORMS

36

EXECUTION TIMINGS

43

INSTRUCTION SET SUMMARY

44

REVISION HISTORY

50

ERRATA

50

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