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What is AM186EM?

This electronic component, produced by the manufacturer "AMD", performs the same function as "(AM186EM / AM188EM) 16-Bit Embedded Microcontrollers".


AM186EM Datasheet PDF - AMD

Part Number AM186EM
Description (AM186EM / AM188EM) 16-Bit Embedded Microcontrollers
Manufacturers AMD 
Logo AMD Logo 


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PRELIMINARY
Am186TMEM/EMLV and Am188TMEM/EMLV
High Performance, 80C186-/80C188-Compatible and
80L186-/80L188-Compatible, 16-Bit Embedded Microcontrollers
DISTINCTIVE CHARACTERISTICS
n E86TM family 80C186- and 80C188-compatible
microcontrollers with enhanced bus interface
— Lower system cost with higher performance
— 3.3-V ±.3-V operation (Am186EMLV 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 (Am186TMEMLV and
Am188TMEMLV microcontrollers) and 40 MHz
with 70-ns static memory (Am186TMEM and
Am188TMEM 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
www.DataSheet4U.com — 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
n 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
n Software-compatible with the 80C186/80C188
and 80L186 /80L188 microcontrollers
n Widely available native development tools,
applications, and system software
n Available in the following packages:
— 100-pin, thin quad flat pack (TQFP)
— 100-pin, plastic quad flat pack (PQFP)
GENERAL DESCRIPTION
The Am186TMEM/EMLV and Am188TMEM/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.
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.
Publication# 19168 Rev: E Amendment/0
Issue Date: February 1997

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AM186EM equivalent
PRELIMINARY
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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