PRELIMINARY
Am186 EM/EMLV and Am188 EM/EMLV
TM
TM
High Performance, 80C186-/80C188-Compatible and
80L186-/80L188-Compatible, 16-Bit Embedded Microcontrollers
DISTINCTIVE CHARACTERISTICS
n
E86
TM
family 80C186- and 80C188-compatible
microcontrollers with enhanced bus interface
— Lower system cost with higher performance
— 3.3- V ±.3 -V ope ra tio n (A m1 86E MLV and
Am188EMLV microcontrollers)
n
High performance
— 20-, 25-, 33-, and 40-MHz operating frequencies
— Supports zero-wait-state operation at 25 MHz
with 110-ns static memory (Am186
TM
EMLV and
Am188
TM
EMLV microcontrollers) and 40 MHz
with 70-ns static memory (Am186
TM
EM and
Am188
TM
EM microcontrollers)
— 1-Mbyte memory address space
— 64-Kbyte I/O space
n
New features provide faster access to memory and
remove the requirement for a 2x clock input
— Nonmultiplexed address bus
— Phase-locked loop (PLL) allows processor to
operate at the clock input frequency
n
New integrated peripherals provide increased
functionality while reducing system cost
— Thirty-two programmable I/O (PIO) pins
— Asynchronous serial port allows full-duplex, 7-bit
or 8-bit data transfers
— Synchronous serial interface allows half-duplex,
bidirectional data transfer to and from ASICs
— Pseudo static RAM (PSRAM) controller includes
auto refresh capability
— Reset configuration register
Familiar 80C186/80L186 peripherals
— Two independent DMA channels
— Programmable interrupt controller with six
external interrupts
— Three programmable 16-bit timers—timer 1 can
be used as a watchdog interrupt timer
— Programmable memory and peripheral
chip-select logic
— Programmable wait state generator
— Power-save clock divider
Software-compatible with the 80C186/80C188
and 80L186 /80L188 microcontrollers
Widely available native development tools,
applications, and system software
Available in the following packages:
— 100-pin, thin quad flat pack (TQFP)
— 100-pin, plastic quad flat pack (PQFP)
n
n
n
n
GENERAL DESCRIPTION
The Am186
TM
EM/EMLV and Am188
TM
EM/EMLV micro-
controllers are the ideal upgrade for 80C186/188 and
80L186/188 microcontroller designs requiring 80C186/
188 and 80L186/188 microcontroller compatibility, in-
creased performance, serial communications, and a di-
rect bus interface. The Am186EM/EMLV and
Am188EM/EMLV microcontrollers increase the perfor-
mance of existing 80C186/188 and 80L186/188 sys-
tems while decreasing their cost.
The Am186EM/EMLV and Am188EM/EMLV microcon-
trollers are part of the AMD E86 family of embedded mi-
crocontrollers and microprocessors based on the x86
architecture. The E86 family includes the 16- and 32-bit mi-
crocontrollers and microprocessors described on page 8
The Am186EM/EMLV and Am188EM/EMLV microcon-
trollers integrate the functions of the CPU, nonmulti-
plexed address bus, timers, chip selects, interrupt
controller, DMA controller, PSRAM controller, asynchro-
nous serial port, synchronous serial interface, and pro-
grammable I/O (PIO) pins on one chip. Compared to the
80C186/188 and 80L186/188 microcontrollers, the
Am186EM/EMLV and Am188EM/EMLV microcontrol-
lers enable designers to reduce the size, power con-
sumption, and cost of embedded systems, while
increasing functionality and performance.
The Am186EM/EMLV and Am188EM/EMLV microcon-
trollers have been designed to meet the most common
requirements of embedded products developed for the
office automation, mass storage, communications, and
general embedded markets. Specific applications in-
clude disk drives, hand-held terminals and desktop ter-
minals, fax machines, printers, photocopiers, feature
phones, cellular phones, PBXs, multiplexers, modems,
and industrial controls.
Publication#
19168
Rev:
E
Amendment/0
Issue Date:
February 1997
This document contains information on a product under development at Advanced Micro Devices. The information
is intended to help you evaluate this product. AMD reserves the right to change or discontinue work on this proposed
product without notice.
P R E L I M I N A R Y
Am186EM MICROCONTROLLER BLOCK DIAGRAM
INT2/INTA0
INT3/INTA1/IRQ
CLKOUTA
CLKOUTB
INT4
INT1/SELECT
INT0
NMI
TMROUT0
TMRIN0
TMROUT1
DRQ0
DRQ1
TMRIN1
X2
X1
V
CC
GND
Clock and
Power
Management
Unit
Interrupt
Control Unit
Control
Registers
Control
Registers
Timer Control
Unit
0
1 (WDT)
Max Count B
Registers
Max Count A
Registers
16-Bit Count
Registers
Control
Registers
DMA
Unit
2
0
1
20-Bit Source
Pointers
20-Bit Destination
Pointers
16-Bit Count
Registers
Control
Registers
Control
Registers
RES
PIO
Unit
PIO31–
PIO0*
Control
Registers
ARDY
SRDY
S2–S0
DT/R
DEN
HOLD
HLDA
S6/
CLKDIV2
UZI
Refresh
Control
Unit
PSRAM
Control
Unit
Control
Registers
Control
Registers
Asynchronous
Serial Port
Control
Registers
Synchronous Serial
Interface
TXD
RXD
Bus
Interface
Unit
Execution
Unit
Chip-Select
Unit
RD
WHB
A19–A0
AD15–AD0
WR
BHE/ADEN
ALE
WLB
LCS/ONCE0
MCS3/RFSH
MCS2–MCS0
SCLK
PCS6/A2
PCS5/A1
PCS3–PCS0
SDATA
SDEN0 SDEN1
UCS/ONCE1
Note:
* All PIO signals are shared with other physical pins. See the pin descriptions beginning on page 25 and Table 2 on page 30 for
information on shared functions.
2
Am186/188EM and Am186/188EMLV Microcontrollers
P R E L I M I N A R Y
Am188EM MICROCONTROLLER BLOCK DIAGRAM
INT2/INTA0
INT3/INTA1/IRQ
CLKOUTA
CLKOUTB
INT4
INT1/SELECT
INT0
NMI
TMROUT0
TMRIN0
TMROUT1
DRQ0
DRQ1
TMRIN1
X2
X1
V
CC
GND
Clock and
Power
Management
Unit
Interrupt
Control Unit
Control
Registers
Control
Registers
Timer Control
Unit
0
1 (WDT)
Max Count B
Registers
Max Count A
Registers
16-Bit Count
Registers
Control
Registers
DMA
Unit
2
0
1
20-Bit Source
Pointers
20-Bit Destination
Pointers
16-Bit Count
Registers
Control
Registers
Control
Registers
RES
PIO
Unit
PIO31–
PIO0*
Control
Registers
ARDY
SRDY
S2–S0
DT/R
DEN
HOLD
HLDA
S6/
CLKDIV2
UZI
Refresh
Control
Unit
PSRAM
Control
Unit
Control
Registers
Control
Registers
Asynchronous
Serial Port
Control
Registers
Synchronous Serial
Interface
TXD
RXD
Bus
Interface
Unit
Execution
Unit
Chip-Select
Unit
RD
A19–A0
AO15–AO8
AD7–AD0
WR
RFSH2/ADEN
ALE
WB
LCS/ONCE0
MCS3/RFSH
MCS2–MCS0
SCLK
PCS6/A2
PCS5/A1
PCS3–PCS0
SDATA
SDEN0 SDEN1
UCS/ONCE1
Note:
* All PIO signals are shared with other physical pins. See the pin descriptions beginning on page 25 and Table 2 on page 30 for
information on shared functions.
Am186/188EM and Am186/188EMLV Microcontrollers
3
P R E L I M I N A R Y
ORDERING INFORMATION
Standard Products
AMD standard products are available in several packages and operating ranges. The order numbers (valid combinations) are
formed by a combination of the elements below.
Am186EM
–40
V
C
\W
LEAD FORMING
\W=Trimmed and Formed
TEMPERATURE RANGE
C=EM Commercial (T
C
=0°C to +100°C)
C=EMLV Commercial (T
A
=0°C to +70°C)
I=EM Industrial (T
A
=–40°C to +85°C) (5-V only)
Where:
T
C
= case temperature
T
A
= ambient temperature
PACKAGE TYPE
V=100-pin, thin quad flat pack (TQFP)
K=100-pin, plastic quad flat pack (PQFP)
SPEED OPTION
–20 = 20 MHz
–25 = 25 MHz
–33 = 33 MHz
–40 = 40 MHz
DEVICE NUMBER/DESCRIPTION
Am186EM High-Performance, 80C186-Compatible,
16-Bit Embedded Microcontroller
Am188EM High-Performance, 80C188-Compatible,
16-Bit Embedded Microcontroller
Am186EMLV High-Performance, 80L186-Compatible,
Low-Voltage, 16-Bit Embedded Microcontroller
Am188EMLV High-Performance, 80L188-Compatible,
Low-Voltage, 16-Bit Embedded Microcontroller
Valid Combinations
Valid combinations list configurations planned to be
supported in volume for this device. Consult the local
AMD sales office to confirm availability of specific valid
combinations and to check on newly released combi-
nations.
Valid Combinations
Am186EM–20
Am186EM–25
Am186EM–33
Am186EM–40
Am188EM–20
Am188EM–25
Am188EM–33
Am188EM–40
Am186EM–20
Am186EM–25
Am188EM–20
Am188EM–25
Am186EMLV–20
Am186EMLV–25
Am188EMLV–20
Am188EMLV–25
VC\W or
KC\W
VC\W or
KC\W
KI\W
KI\W
VC\W or
KC\W
VC\W or
KC\W
Notes:
1. The Am186EM and Am188EM industrial
microcontrollers, as well as the Am186EMLV and
Am188EMLV commercial microcontrollers, are
available in 20- and 25-MHz operating
frequencies only.
2. The Am186EM and Am188EM industrial
microcontrollers are not offered in a low-voltage
operating range.
3. The Am186EM, Am188EM, Am186EMLV, and
Am188EMLV microcontrollers are all functionally
the same except for their DC characteristics and
available frequencies.
4
Am186/188EM and Am186/188EMLV Microcontrollers
P R E L I M I N A R Y
TABLE OF CONTENTS
Distinctive Characteristics ............................................................................................................ 1
General Description ..................................................................................................................... 1
Am186EM Microcontroller Block Diagram .................................................................................... 2
Am188EM Microcontroller Block Diagram .................................................................................... 3
Ordering Information .................................................................................................................... 4
Related AMD Products ................................................................................................................ 8
Key Features and Benefits ........................................................................................................ 10
TQFP Connection Diagrams and Pinouts .................................................................................. 11
PQFP Connection Diagrams and Pinouts ................................................................................. 17
Logic Symbol—Am186EM Microcontroller ................................................................................ 23
Logic Symbol—Am188EM Microcontroller ................................................................................ 24
Pin Descriptions
Pins that Are Used by Emulators ................................................................................... 25
A19–A0 ........................................................................................................................... 25
AD7–AD0 ....................................................................................................................... 25
AD15–AD8 (Am186EM Microcontroller) ......................................................................... 25
AO15–AO8 (Am188EM Microcontroller) ........................................................................ 25
ALE ................................................................................................................................ 25
ARDY ............................................................................................................................. 25
BHE/ADEN (Am186EM Microcontroller Only) ............................................................... 26
CLKOUTA ...................................................................................................................... 26
CLKOUTB ...................................................................................................................... 26
DEN/PIO5 ...................................................................................................................... 26
DRQ1–DRQ0 .................................................................................................................. 26
DT/R/PIO4 ..................................................................................................................... 26
GND ............................................................................................................................... 27
HLDA ............................................................................................................................. 27
HOLD ............................................................................................................................. 27
INT0 ............................................................................................................................... 27
INT1/SELECT ................................................................................................................ 27
INT2/INTA0/PIO31 ......................................................................................................... 27
INT3/INTA1/IRQ ............................................................................................................. 27
INT4/PIO30 .................................................................................................................... 28
LCS/ONCE0 ................................................................................................................... 28
MCS3/RFSH/PIO25 ....................................................................................................... 28
MCS2–MCS0 .................................................................................................................. 28
NMI ................................................................................................................................ 28
PCS3–PCS0 ................................................................................................................... 29
PCS5/A1/PIO3 ............................................................................................................... 29
PCS6/A2/PIO2 ............................................................................................................... 29
PIO31–PIO0 (Shared) .................................................................................................... 29
RD .................................................................................................................................. 31
RES ................................................................................................................................ 31
RFSH2/ADEN (Am188EM Microcontroller Only) ........................................................... 31
RXD/PIO28 .................................................................................................................... 31
S2–S0 ............................................................................................................................ 31
S6/CLKDIV2/PIO29 ....................................................................................................... 31
SCLK/PIO20 .................................................................................................................. 32
SDATA/PIO21 ................................................................................................................ 32
SDEN1/PIO23, SDEN0/PIO22 ....................................................................................... 32
SRDY/PIO6 .................................................................................................................... 32
TMRIN0/PIO11 .............................................................................................................. 32
Am186/188EM and Am186/188EMLV Microcontrollers
5
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