PRELIMINARY
Élan
™
SC300
Highly Integrated, Low-Power, 32-Bit Microcontroller
DISTINCTIVE CHARACTERISTICS
n
Highly integrated, single-chip CPU and system
logic
– Optimized for embedded PC applications
– Combines 32 bit, x86 compatible, low-voltage
CPU with memory controller, PC/AT peripheral
controllers, real-time clock, and PLL clock gener-
ators
– 0.7 micron, low-voltage, CMOS process, fully
static
n
Enhanced Am386
®
SXLV CPU core
– 25 MHz or 33 MHz operating frequencies
– 3.3 V core, 3.3 V or 5 V memory and I/O
– Low-power, fully static design for long battery life
– System Management Mode (SMM) for power
management control
n
Integrated power management functions
– Internal clock generators (using multiple Phase-
Locked Loops and one external 32-KHz crystal)
– Supports CPU System Management Mode
(SMM)
– Multiple operating modes: High Speed PLL, Low
Speed PLL, Doze, Sleep, Suspend, and Off. Fully
static design allows stopped clock.
– Comprehensive control of system and peripheral
clocks
– Five external power management control pins
– Suspend refresh of DRAM array
– Clock switching during ISA cycles
– Low power consumption: 0.12 mW typical
Suspend mode power
– Simultaneous multiple-voltage I/O pads operate
at either 3.3 V or 5 V. Core operates at 3.3 V for
minimum power consumption.
n
Integrated memory controller
– Controls symmetrically addressable DRAM or
asymmetrical 512 Kbyte x 8 bit or 1 Mbyte x 16 bit
DRAM or SRAM as main memory
– Zero wait-state access with 70 ns, Page mode
DRAMs
– Supports up to 16 Mbyte system memory
– Supports up to 16 Mbyte of application ROM/
Flash, and 320 Kbyte direct ROM BIOS access.
Also supports shadow RAM
– Fully PC/AT compatible
n
Integrated PC/AT-compatible peripheral logic
– One programmable interval timer (fully 8254
compatible)
– Two programmable interrupt controllers (8259A
compatible)
– Two DMA controllers (8237A compatible)
– Built-in real-time clock (146818A compatible),
with an additional 114 bytes of RAM
– Internal Phase-Locked Loops (PLL) generate all
clocks from single 32.768 kHz crystal input
n
Bus configurations
– 16-bit data path
– Optional bus configurations:
— Internal LCD controller with subset ISA
— 386 Local Bus mode with subset ISA
— Maximum ISA Bus mode
– Four programmable chip selects
– Built-in 8042 chip select
n
Serial port controller (16450 UART compatible)
n
Bidirectional parallel port with EPP
n
Integrates two PCMCIA Version 2.1 slots
n
Integrated CGA-compatible LCD controller
– Fully 6845 compatible
– 16 gray levels in Text mode; 2 or 4 levels in
Graphics mode
– Supports the following LCD Panel Sizes:
— 320 x 240 single scan (2 bpp)
— 640 x 200 single/dual scan (1 bpp)
— 480 x 320 single scan (1 bpp)
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 product
without notice.
Publication#
18514
Rev:
D
Amendment/0
Issue Date:
October 1997
P R E L I M I N A R Y
GENERAL DESCRIPTION
The ÉlanSC300 microcontroller is a highly integrated,
low-voltage, single-chip implementation of the
Am386SXLV microprocessor plus most of the addi-
tional logic needed for an AT-compatible personal com-
puter. It is ideal for embedded PC applications, such as
point-of-sale equipment, web appliances, industrial
controls, and communication equipment.
The ÉlanSC300 microcontroller from AMD is part of the
growing Élan family of mobile computing products,
which leverage existing AMD core modules. The
ÉlanSC300 microcontroller demonstrates the feasibil-
ity of constructing highly integrated components built
from standard cores and getting these products to mar-
ket quickly.
The ÉlanSC300 microcontroller does this by combining
an Am386SXLV low-voltage microprocessor core with
a memory control unit, a Power Management Unit
(PMU), and the bus control and peripheral control logic
of a PC/AT-compatible computer. For more information
about the Am386 microprocessors, see the
Am386
®
SX/SXL/SXLV Data Sheet
, order #21020 and
the
Am386
®
DX/DXL Data Sheet
, order #21017.
For more information about the ÉlanSC310 microcon-
troller, see the
Élan
TM
SC300 Microcontroller Program-
mer’s Reference Manual
, order #18470.
The ÉlanSC300 microcontroller includes a memory
controller that supports up to 16 Mbyte of DRAM, Flash
or ROM; power management functions; a bus control-
ler that supports local or ISA bus; a serial port controller
that is 16450 UART compatible; a bidirectional EPP-
compliant parallel port; a 146818A-compatible
real-time clock; internal phase-locked loops for clock
generation; and standard PC logic chips (8259A,
8237A, and 8254).
The ÉlanSC300 microcontroller’s true static design
and low operating voltage enable battery-powered op-
eration and lower weight for embedded PC applica-
tions. The internal core of the ÉlanSC300
microcontroller operates at 3.3 V and the I/O pads
allow either 3.3 V or 5 V operation. Lowering typical op-
erating voltage from 5 V to 3.3 V can dramatically re-
duce power consumption.
Functionally, the ÉlanSC300 microcontroller is a 100%
DOS/Windows-compatible, PC/AT-compatible com-
puter on a chip that is designed to furnish the customer
with a high-performance, low-power system solution,
providing state-of-the-art power management in a
small physical footprint.
The ÉlanSC300 microcontroller is available in both 25-
and 33-MHz versions, in a 208-lead Plastic Shrink
Quad Flat Pack (QFP) (PQR package) and a 208-lead
Thin Quad Flat Pack (TQFP) (PQL package).
Note:
Unless specified otherwise, the timings in this
data sheet are based on the 33-MHz version of the
ÉlanSC300 microcontroller.
2
Élan™SC300 Microcontroller Data Sheet
P R E L I M I N A R Y
CUSTOMER SERVICE
The AMD customer service network includes U.S. of-
fices, international offices, and a customer training cen-
ter. Expert technical assistance is available from the
AMD worldwide staff of field application engineers and
factory support staff who can answer E86 family hard-
ware and software development questions.
Hotline and World Wide Web Support
For answers to technical questions, AMD provides a
toll-free number for direct access to our corporate ap-
plications hotline. Also available is the AMD World
Wide Web home page and FTP site, which provides the
latest E86 family product information.
Corporate Applications Hotline
(800) 222-9323
44-(0) 1276-803-299
Toll-free for U.S. and Canada
U.K. and Europe hotline
World Wide Web Home Page and FTP Site
To ac c es s the AM D ho me pag e, g o t o ht tp:/ /
www.amd.com.
Questions, requests, and input concerning AMD’s
WWW pages can be sent via E-mail to webmas-
ter@amd.com.
To d own lo ad do cu me nt s a nd s oft war e , ft p t o
ftp.amd.com and log on as anonymous using your
e-mail address as a password. Or via your web
browser, go to ftp://ftp.amd.com.
Documentation and Literature
Free E86 family information such as data books, user’s
man ual s , data sh eets , ap pl ic ati on n otes , th e
FusionE86 Partner Solutions Catalog, and other litera-
ture is available with a simple phone call. Internation-
ally, contact your local AMD sales office for complete
E86 family literature.
Literature Ordering
(800) 222-9323
(512) 602-5651
Toll-free for U.S. and Canada
Direct dial worldwide
Élan™SC300 Microcontroller Data Sheet
3
P R E L I M I N A R Y
BLOCK DIAGRAM
SA12–SA0
IOR, IOW, MEMR,
MEMW, BALE
D15–D0
DSMA14–DSMA0
DSMD7–DSMD0
LCD Interface
A20GATE, RC
8042CS, SYSCLK
MCS16, IOCS16,
IOCHRDY, 0WS
DACKx, TC, AEN
DREQx
LCD
Controller
A23–A13, ADS, D/C,M/IO,
W/R, BHE, BLE, CPUCLK,
CPURST, CPURDY
Bus Controller
DMA
Controller
(2x8237A-5)
Local Bus
Controller
LRDY, LDEV
Memory
Controller
PD15–PD0
Am386SXLV
PA23–PA0
CONTROL
RAS, CAS, MWE
M
U
X
MA11/SA12–
MA0/SA23
LFX
X32IN
Power
Management
Control Unit
PMCx
ACIN, BLx, EXTSMI,
SUS/RES
Mapping
Registers
PGP3–PGP0
Clock
Generators
Parallel Port
Control
PPDWE, PPOEN
AFDT, STRB, SLCT, INIT
ACK, BUSY, ERROR, PE, SLCT
X32OUT
Serial Port
(16450)
Real-Time Clock
(146818A)
DTR, RTS, SOUT
CTS, DSR, DCD, SIN, RIN
MCEL, MCEH, VPP, REG
CD, RDY, WP, BVDx
Programmable
Interval Timer
(8254)
Interrupt
Controller
(2x8259)
PCMCIA
Interface
MCEL, MCEH, VPP, REG
CD, RDY, WP, BVDx
}
SLOT A
}
SLOT B
WAIT (common)
IRQx
4
Élan™SC300 Microcontroller Data Sheet
P R E L I M I N A R Y
ORDERING INFORMATION
AMD standard products are available in several packages and operating ranges. The order numbers (Valid Combi-
nations) are formed by a combination of the elements below.
É
LANSC300
–25
K
C
TEMPERATURE RANGE
C = Commercial (0°C
≤
T
AMBIENT
≤
70°C)
I = Industrial (–40°C < T
CASE
≤
85°C)
PACKAGE TYPE
K = 208 lead QFP (Plastic Shrink Quad Flat Pack) (PQR-208)
V = 208 lead TQFP (Thin Quad Flat Pack) (PQL-208)
SPEED OPTION
–25 = 25 MHz
–33 = 33 MHz
DEVICE NUMBER/DESCRIPTION
É
lanSC300 microcontroller
Highly integrated, low-power,
32-bit microprocessor and system logic
Valid Combinations
ELANSC300–25
ELANSC300–33
ELANSC300–25
ELANSC300–33
ELANSC300–25
ELANSC300–33
KC
KC
KI
KI
VC
VC
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 combinations.
Élan™SC300 Microcontroller Data Sheet
5
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