Am186 ER and Am188 ER
TM
TM
High-Performance, 80C186- and 80C188-Compatible,
16-Bit Embedded Microcontrollers with RAM
DISTINCTIVE CHARACTERISTICS
n
E86
TM
family 80C186- and 80C188-compatible
microcontrollers with enhanced bus interface
— Lower system cost with high performance
— 3.3-V
±
0.3-V operation with 5-V tolerant I/O
n
Memory integration
— 32 Kbyte of internal SRAM
— Internal SRAM provides same performance as
zero-wait-state external memory
n
High performance
— 25-, 33-, 40- and 50-MHz operating frequencies
— Supports zero-wait-state operation at 50 MHz
with 55-ns external memory
— 1-Mbyte memory address space
— 64-Kbyte I/O space
n
Enhanced features provide faster access to
memory and various clock input modes
— Nonmultiplexed address bus provides glueless
interface to external RAM and ROM
— Phase-locked loop (PLL) enables processor to
operate at up to four times clock input frequency
n
Enhanced integrated peripherals
— Thirty-two programmable I/O (PIO) pins
— Asynchronous serial port allows full-duplex, 7-bit
or 8-bit data transfers
— DMA to and from asynchronous serial port
— Synchronous serial interface allows half-duplex,
bidirectional data transfer to and from ASICs
— Reset configuration register
— Additional external interrupts
— Hardware watchdog timer can generate NMI or
system reset
— Pseudo static RAM (PSRAM) controller includes
auto refresh capability
Familiar 80C186 peripherals with enhanced
functionality
— Two independent DMA channels
— Programmable interrupt controller with six
external interrupts
— Three programmable 16-bit timers
— Programmable memory and peripheral
chip-select logic
— Programmable wait state generator
— Power-save clock mode
Software-compatible with the 80C186 and
80C188 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
GENERAL DESCRIPTION
The Am186
TM
ER and Am188
TM
ER microcontrollers are
par t of the AMD E86™ family of embedded
microcontrollers and microprocessors based on the
x86 architecture. The Am186ER and Am188ER
microcontrollers are the ideal upgrade for designs
requiring 80C186/80C188 microcontroller
c o m p a t i b i l i t y, i n c r e a s e d p e r f o r m a n c e, s e r i a l
communications, a direct bus interface, and integrated
memory.
The Am186ER and Am188ER microcontrollers
integrate memory and the functions of the CPU,
nonmultiplexed address bus, timers, chip selects,
interrupt controller, DMA controller, PSRAM controller,
w a t c h d o g t i m e r, a s y n c h r o n o u s s e r i a l p o r t ,
synchronous serial interface, and programmable I/O
© Copyright 2000 Advanced Micro Devices, Inc. All rights reserved.
D
R
A
n
n
n
T
F
(PIO) pins on one chip. Compared to the 80C186/
8 0 C 1 8 8 m i c r o c o n t r o l l e r s, t h e A m 1 8 6 E R a n d
Am188ER microcontrollers enable designers to reduce
the size, power consumption, and cost of embedded
systems, while increasing functionality and
performance.
The Am186ER and Am188ER microcontrollers have
been designed to meet the most common
requirements of embedded products developed for the
communications, office automation, mass storage, and
general embedded markets. Specific applications
include feature phones, cellular phones, PBXs,
multiplexers, modems, disk drives, hand-held terminals
and desktop ter minals, fax machines, printers,
photocopiers, and industrial controls.
Publication#
20732
Rev:
D
Amendment/0
Issue Date:
June 2000
AMD [ ADVANCED MICRO DEVICES ]
