Intel
80C186EA/80C188EA AND
80L186EA/80L188EA
16-Bit High-Integration Embedded Processors
Datasheet
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Intel
80C186 Upgrade for Power Critical Applications
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Fully Static Operation
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True CMOS Inputs and Outputs
Product Features
The Intel
80C186EA is a CHMOS high integration embedded microprocessor. The Intel
80C186EA includes all of the features of an ``Enhanced Mode'' Intel
80C186 while adding the
additional capabilities of Idle and Powerdown Modes. In Numerics Mode, the Intel
80C186EA
interfaces directly with an Intel
80C187 Numerics Coprocessor
.
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Integrated Feature Set
-- Static 186 CPU Core
-- Power Save, Idle and Powerdown
Modes
-- Clock Generator
-- 2 Independent DMA Channels
-- 3 Programmable 16-Bit Timers
-- Dynamic RAM Refresh Control Unit
-- Programmable Memory and Peripheral
Chip Select Logic
-- Programmable Wait State Generator
-- Local Bus Controller
-- System-Level Testing Support (High
Impedance Test Mode)
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Speed Versions Available (3V)
-- 13 MHz (Intel
80L186EA13/
80L188EA13)
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Direct Addressing Capability to 1 Mbyte
Memory and 64 Kbyte I/O
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Supports Intel
80C187 Numeric
Coprocessor Interface (Intel
80C186EA
only)
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Available in the Following Packages:
-- 68-Pin Plastic Leaded Chip Carrier
(PLCC)
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Available in Extended Temperature Range
(-40C to +85C)
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Speed Versions Available (5V):
--25 MHz (Intel
80C186EA25/80C188EA25)
--20 MHz (Intel
80C186EA20/80C188EA20)
--13 MHz (Intel
80C186EA13/80C188EA13)
Order Number: 272432-005
April 2002
2
Datasheet
Information in this document is provided in connection with Intel
products. No license, express or implied, by estoppel or otherwise, to any intellectual
property rights is granted by this document. Except as provided in Intel's Terms and Conditions of Sale for such products, Intel assumes no liability
whatsoever, and Intel disclaims any express or implied warranty, relating to sale and/or use of Intel products including liability or warranties relating to
fitness for a particular purpose, merchantability, or infringement of any patent, copyright or other intellectual property right. Intel products are not
intended for use in medical, life saving, or life sustaining applications.
Intel may make changes to specifications and product descriptions at any time, without notice.
Designers must not rely on the absence or characteristics of any features or instructions marked "reserved" or "undefined." Intel reserves these for
future definition and shall have no responsibility whatsoever for conflicts or incompatibilities arising from future changes to them.
The Intel
80C186EA/80C188EA AND 80L186EA/80L188EA may contain design defects or errors known as errata which may cause the product to
deviate from published specifications. Current characterized errata are available on request.
Contact your local Intel sales office or your distributor to obtain the latest specifications and before placing your product order.
Copies of documents which have an ordering number and are referenced in this document, or other Intel literature may be obtained by calling
1-800-548-4725 or by visiting Intel's website at http://www.intel.com.
Copyright Intel Corporation, 2002
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*Other names and brands may be claimed as the property of others.
Datasheet
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Contents
Contents
1.0
Introduction....................................................................................................................................7
2.0
Intel 80C186EA Core Architecture............................................................................................. 9
2.1
Bus Interface Unit .................................................................................................................9
2.2
Clock Generator.................................................................................................................... 9
3.0
Intel 80C186EA Peripheral Architecture ................................................................................. 11
3.1
Interrupt Control Unit .......................................................................................................... 11
3.2
Timer/Counter Unit ............................................................................................................. 11
3.3
DMA Control Unit ................................................................................................................ 14
3.4
Chip-Select Unit .................................................................................................................. 14
3.5
Refresh Control Unit ........................................................................................................... 14
3.6
Power Management............................................................................................................ 14
3.7
80C187 Interface (80C186EA Only) ................................................................................... 15
3.8
ONCE Test Mode ...............................................................................................................15
4.0
Intel 80C186XL and Intel 80C186EA Differences................................................................. 16
4.1
Pinout Compatibility ............................................................................................................ 16
4.2
Operating Modes ................................................................................................................ 16
4.3
TTL vs. CMOS Inputs ......................................................................................................... 16
4.4
Timing Specifications .......................................................................................................... 16
4.5
Package Information ........................................................................................................... 17
4.6
Pin Descriptions .................................................................................................................. 17
5.0
Intel 80C186EA Pinout.............................................................................................................. 22
6.0
Package Thermal Specifications................................................................................................ 24
7.0
Electrical Specification ...............................................................................................................25
7.1
Absolute Maximum Ratings*............................................................................................... 25
7.2
Recommended Connections .............................................................................................. 25
8.0
DC Specifications ........................................................................................................................ 26
8.1
ICC Versus Frequency and Voltage ................................................................................... 28
8.2
PDTMR Pin Delay Calculation ............................................................................................29
Contents
4
Datasheet
9.0
AC Specifications ........................................................................................................................ 30
10.0 AC Test Conditions ..................................................................................................................... 34
11.0 AC Timing Waveforms ................................................................................................................ 35
12.0 Derating Curves........................................................................................................................... 38
13.0 Reset............................................................................................................................................. 39
14.0 Bus Cycle Waveforms................................................................................................................. 42
15.0 Product Name Execution Timings ............................................................................................. 49
16.0 Revision History .......................................................................................................................... 56
17.0 Errata ............................................................................................................................................ 56
Datasheet
5
Contents
Figures
1
Product Name Block Diagram ...................................................................................................... 8
2
Clock Configurations................................................................................................................... 10
3
68-Lead PLCC Pinout Diagram .................................................................................................. 23
4
AC Test Load.............................................................................................................................. 34
5
Input and Output Clock Waveform.............................................................................................. 35
6
Output Delay and Float Waveform ............................................................................................. 35
7
Input Setup and Hold .................................................................................................................. 36
8
Relative Signal Waveform .......................................................................................................... 37
9
Typical Output Delay Variations Versus Load Capacitance ....................................................... 38
10
Typical Rise and Fall Variations Versus Load Capacitance ....................................................... 38
11
Powerup Reset Waveforms ........................................................................................................40
12
Warm Reset Waveforms............................................................................................................. 41
13
Read, Fetch and Refresh Cycle Waveform ................................................................................ 42
14
Write Cycle Waveform ................................................................................................................ 43
15
Halt Cycle Waveform .................................................................................................................. 44
16
INTA Cycle Waveform ................................................................................................................ 45
17
HOLD/HLDA Waveform .............................................................................................................. 46
18
DRAM Refresh Cycle During Hold Acknowledge .......................................................................47
19
Ready Waveform ........................................................................................................................ 48
20
Instruction Set Summary ............................................................................................................ 50
Tables
1
Peripheral Control Block Registers............................................................................................. 12
2
Intel 80C186EA Slave Mode Peripheral Control Block Registers ............................................ 13
3
Prefix Identification ..................................................................................................................... 17
4
Pin Description Nomenclature .................................................................................................... 18
5
Pin Descriptions.......................................................................................................................... 19
6
PLCC Pin Names with Package Location................................................................................... 22
7
PLCC Package Location with Pin Names................................................................................... 22
8
Thermal Resistance (qCA) at Various Airflows (in C/Watt) ....................................................... 24
9
DC SPECIFICATIONS (80C186EA/80C188EA) ........................................................................ 26
10
DC SPECIFICATIONS (80L186EA/80L188EA).......................................................................... 27
11
CDEV Values.............................................................................................................................. 28
12
AC Characteristics--80C186EA25/80C186EA20/80C186EA13 ................................................ 30
13
AC Characteristics--80L186EA13/80C186EA8 .........................................................................32
14
Relative Timings (80C186EA25/20/13, 80L186EA13)................................................................ 33
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