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Intel 80C186EA User Manual Page 37
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80C186EA/80C188EA,
80L186EA/80L188EA
272432-18
NOTES:
1.
During
the
data
phase
of
the
bus
cycle,
A19/S6
is
driven
high
for
a
DMA
cycle.
2.
Pin
names
in
parentheses
apply
to
the
80C188EA.
Figure
18.
Write
Cycle
Waveform
37
37
1
2
...
32
33
34
35
36
37
38
39
40
41
42
...
49
50
October 1995
1
COPYRIGHT
1
INTEL CORPORATION, 1995
1
Order Number: 272432-003
1
272432–1
1
CONTENTS PAGE
2
272432–2
3
INTRODUCTION
4
80C186EA CORE ARCHITECTURE
4
Bus Interface Unit
4
Clock Generator
4
80C186EA PERIPHERAL
5
ARCHITECTURE
5
Interrupt Control Unit
5
Timer/Counter Unit
5
00H Reserved
6
40H Reserved
6
80H Reserved
6
C0H DMA0 Src. Lo
6
DMA Control Unit
7
Chip-Select Unit
7
Refresh Control Unit
7
Power Management
7
PACKAGE INFORMATION
9
Pin Descriptions
9
80C186EA PINOUT
15
NOTES: 272432–5
16
NOTES: 272432–6
18
PACKAGE THERMAL
20
SPECIFICATIONS
20
ELECTRICAL SPECIFICATIONS
21
Absolute Maximum Ratings*
21
Recommended Connections
21
AC SPECIFICATIONS
25
AC SPECIFICATIONS (Continued)
26
AC TEST CONDITIONS
30
AC TIMING WAVEFORMS
30
272432–12
32
DERATING CURVES
33
272432–15
34
272432–16
35
BUS CYCLE WAVEFORMS
36
272432-18
37
272432–19
38
NOTES: 272432–20
39
Figure 21. HOLD/HLDA Waveform
40
272432–22
41
Figure 23. Ready Waveform
42
80C186EA/80C188EA EXECUTION
43
INSTRUCTION SET SUMMARY
44
(Continued)
45
REVISION HISTORY
50
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