Intel 80L186EA User Manual
Page 2

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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