Élan™SC400 and ÉlanSC410
Single-Chip, Low-Power,
PC/AT-Compatible Microcontrollers
DISTINCTIVE CHARACTERISTICS
Élan™SC400 and ÉlanSC410
Microcontrollers
s
E86
TM
family of x86 embedded processors
s
Standard PC/AT system logic
(PICs, DMACs, timer, RTC)
– DOS, ROM-DOS, Windows, and industry-
standard BIOS support
– Leverages the benefits of desktop computing
environment at embedded price points
s
Bidirectional parallel port with Enhanced
– Offers improved time-to-market, software
migration, and field-proven development tools
s
Highly integrated single-chip CPU with a complete
Parallel Port (EPP) mode
s
16550-compatible UART
s
Infrared port for wireless communication
set of common peripherals
– Accelerates time-to-market with simplified
hardware
– Low-power 0.35-micron process technology
– Single chip delivers smallest system form factor
– 33-MHz, 66-MHz, and 100-MHz operating
frequencies
s
Am486
®
– Standard and high-speed
s
Keyboard interface
– Matrix keyboard support with up to 15 rows and 8
columns
– SCP-emulation mode for PC/AT and XT
keyboard support
CPU core
– Robust Microsoft
®
Windows
®
compatible CPU
– 8-Kbyte write-back cache for enhanced
performance
– Fully static design with System Management
Mode (SMM) for power savings
s
Comprehensive power management unit
ÉlanSC400 Microcontroller Only
The ÉlanSC400 microcontroller includes the following
additional features designed specifically for mobile
computing applications. The ÉlanSC410 microcontrol-
ler does not include these features.
s
Dual PC Card (PCMCIA Version 2.1) controller
– Seven modes of operation allow fine-tuning of
power requirements for maximum battery life
– Provides a superset of APM 1.2 features
s
Glueless burst-mode
supports 8- or 16-bit data bus
– End-user (after-market) system expansion
– ExCA-compliant, 82365-register set compatible
– Leverages off-the-shelf card and socket services
– Supports DMA transfers between I/O PC cards
and system DRAM
s
LCD graphics controller
ROM/Flash memory/SRAM interface
– Reduces system cost by allowing mask ROM and
Flash memory at the same time with three ROM/
Flash memory/SRAM chip selects
s
Glueless DRAM controller
– Allows mixed DRAM types on a per-bank basis to
reduce system cost
s
VESA Local (VL) bus and ISA bus interface
– Supports monochrome and 4-bit color Super
Twisted Nematic (STN) LCDs
– Unified Memory Architecture (UMA) eliminates
separate video memory
– Reduces time-to-market with a wide variety of off-
the-shelf companion chips
© Copyright 1998 Advanced Micro Devices, Inc. All Rights Reserved.
Advanced Micro Devices, Inc. (“AMD”) reserves the right to discontinue its products, or make changes in its products, at any time without notice.
The information in this publication is believed to be accurate at the time of publication, but AMD makes no representations or warranties with respect to the accuracy or completeness of the
contents of this publication or the information contained herein, and reserves the right to make changes at any time, without notice. AMD disclaims responsibility for any consequences resulting
from the use of the information included in this publication.
This publication neither states nor implies any representations or warranties of any kind, including but not limited to, any implied warranty of merchantability or fitness for a particular purpose.
AMD’s products are not designed, intended, authorized or warranted for use as components in systems intended for surgical implant into the body, or in other applications intended to support
or sustain life, or in any other application in which the failure of AMD’s product could create a situation where personal injury,
death, or severe property or environmental damage may occur. AMD assumes no liability whatsoever for claims associated with
Publication#
21028
Rev:
B
Amendment/0
the sale or use (including the use of engineering samples) of AMD products except as provided in AMD’s Terms and Conditions
Issue Date:
December 1998
of Sale for such product.
GENERAL DESCRIPTION
The Élan™SC400 and ÉlanSC410 microcontrollers
are the among the latest in a series of E86™ family
microcontrollers, which integrate proven x86 CPU
cores with a comprehensive set of on-chip peripherals
in a 0.35-micron process.
The ÉlanSC400 and ÉlanSC410 microcontrollers
combine a 32-bit, low-voltage Am486 CPU with a
complete set of PC/AT-compatible peripherals, along
with the power management features required for
battery operation.
Leveraging the benefits of the x86 desktop computing
environment, the ÉlanSC400 and ÉlanSC410 microcon-
trollers integrate all of the common logic and I/O func-
tionality associated with a PC/AT computing system into
a single device, eliminating the need for multiple periph-
eral chips. Fully integrated PC/AT-compatible peripher-
als include two 8259A-compatible programmable
interrupt controllers (PICs), two 8237A-compatible DMA
controllers, an 8254-compatible timer, a 16550 UART,
an IrDA controller, VL-bus and ISA bus controllers, a
real-time clock (RTC), and Enhanced Parallel Port
(EPP) mode for the parallel port.
With its low-voltage Am486
®
CPU core and ultra-small
form factor, the ÉlanSC400 microcontroller is highly op-
timized for mobile computing applications. The
ÉlanSC410 microcontroller is targeted specifically for
embedded systems.
A feature comparison of the two microcontrollers is
shown in Table 1 on page 3.
The ÉlanSC400 and ÉlanSC410 microcontrollers use
the industry-standard 486 microprocessor instruction
set. All software written for the x86 architecture family
is compatible with the ÉlanSC400 and ÉlanSC410
microcontrollers.
The ÉlanSC400 and ÉlanSC410 microcontrollers are
based on a fully static design and include an advanced
power management unit. Operating voltages are
2.7 V–3.3 V with 5-V-tolerant I/O pads. Orderable in
both 33-MHz, 66-MHz, and 100-MHz peak processor
speeds, the product is available in the ultra-small
292 ball grid array (BGA) package.
ORDERING INFORMATION
AMD standard products are available in several packages and operating ranges. The order number (Valid
Combination) is formed by a combination of the elements below.
ELANSC400
–33
A
C
TEMPERATURE RANGE
C = Commercial
For 33 and 66 MHz: T
CASE
= 0
°
C to +95
°
C
For 100 MHz: T
CASE
= 0
°
C to +85
°
C
I = Industrial
For 33 and 66 MHz, T
CASE
= – 40
°
C to +95
°
C
PACKAGE TYPE
A = 292-pin BGA (Ball Grid Array)
SPEED OPTION
–33 = 33 MHz
–66 = 66 MHz
–100 = 100 MHz
DEVICE NUMBER/DESCRIPTION
ÉlanSC400 microcontroller
ÉlanSC410 microcontroller
Valid Combinations
ELANSC400–33
ELANSC400–66
ELANSC400–100
ELANSC410–33
ELANSC410–66
ELANSC410–100
AC
AC
AC, AI
AC, AI
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.
2
Élan™SC400 and ÉlanSC410 Microcontrollers Data Sheet
Table 1.
Product Comparison—ÉlanSC400 and ÉlanSC410 Microcontrollers
ÉlanSC410
Am486 CPU
8-Kbyte Write-Back
Yes
No
16, 32 bit
8, 16 bit
No
32 bit
No
Yes
Yes
Yes
Yes
Yes
8, 16, 32 bit
3 x 64 Mbyte
3
Yes
Yes
4
16, 32 bit
64 Mbyte
Yes
ROM-mappable
Yes
Yes
Yes
2
8, 16 bit
7
2
2
8
Yes
16550-compatible
Yes
Yes
Yes
32
Yes
No
ÉlanSC400
Am486 CPU
8-Kbyte Write-Back
Yes
No
16, 32 bit
8, 16 bit
No
32 bit
No
Yes
Yes
Yes
Yes
Yes
8, 16, 32 bit
3 x 64 Mbyte
3
Yes
Yes
4
16, 32 bit
64 Mbyte
Yes
ROM-mappable
Yes
Yes
Yes
2
8, 16 bit
7
2
2
8
Yes
16550-compatible
Yes
Yes
Yes
32
Yes
Yes
2
Yes
Yes
Yes
Yes
Yes
Yes
292 BGA
2.7–3.3 V
3.3 V
5V
33, 66, 100 MHz
Feature
Core CPU
L1 Cache
System management mode (SMM)
Floating-point unit
Data Bus
ISA Interface
ISA bus mastering
VESA Local Bus
VL bus mastering
Power Management
Mode timers
Activity detection
SMI/NMI generation
Battery monitoring
On-Chip ROM Interface
Width
Size (total ROM space)
ROM chip selects
Burst-mode support
Support for SRAM as ROM address space
On-Chip DRAM Controller
Banks
Width
Size (total of all banks)
EDO support
Support for SRAM as main memory
Integrated PC/AT-Compatible Peripherals
Programmable timer (8254-compatible)
Real-time clock (146818A-compatible)
Port B and Port 92h I/O registers
Cascaded DMA Controllers (8237A)
Width
Total number of channels
External channels
Cascaded Interrupt Controllers (8259)
External IRQ signals
Bidirectional Parallel Port with EPP Mode
Serial Port (UART)
Keyboard Interface
Support for external 8042 SCP
XT interface
Matrix scanned with SCP emulation
General-Purpose Input/Output Signals
Infrared (IrDA) Port
PC Card Controller
Sockets
PCMCIA 2.1-compliant
82365-compatible
LCD Graphics Controller
Programmable clock frequency
Unified memory architecture (UMA)
JTAG Support
Pin Count and Package
V
CC
:
CPU core
On-chip peripheral logic
I/O tolerance (designated pins)
Processor Clock Rate
No
Yes
292 BGA
2.7–3.3 V
3.3 V
5V
33, 66, 100 MHz
Élan™SC400 and ÉlanSC410 Microcontrollers Data Sheet
3
BLOCK DIAGRAM—ÉlanSC400 MICROCONTROLLER
ÉlanSC400 Microcontroller
Addr
Data
Am486
CPU
®
Memory
Management
Unit
System Address Bus
Address
Decoder
Addr
Dual DMA
Controllers
8237
Data
Steering
Data Bus
Power
GPIOs
Management
Unit
Clock I/O
Clock
Generation
Real-Time
Clock
Boundary
Scan
AT Port
Logic
Timer
8254
Dual Interrupt
Controllers
8259
Socket A Ctrl
GPIOs or
Parallel Port or
PC Card Socket B
PC Card
Controller
GPIOs
EPP
Parallel
Port
UART
16550
Infrared
Port
GPIOs
GPIOs
Internal
Bus
LCD
Graphics
Controller
Graphics or
Local Bus Controller
Local Bus
Controller
32-kHz Crystal
System
Arbiter
GPIOs
DRAM Control
Memory
Controller
ROM Control
DRAM Control or
Keyboard Rows
GPIOs or
Keyboard Rows
Columns or
XT Keyboard
ISA Control or
Keyboard Rows
ISA Control
ISA Control or
GPIOs
Keyboard
Interface:
Matrix/XT/SCP
Serial Port
ISA Bus
Controller
Infrared
4
Élan™SC400 and ÉlanSC410 Microcontrollers Data Sheet
BLOCK DIAGRAM—ÉlanSC410 MICROCONTROLLER
ÉlanSC410 Microcontroller
Addr
Data
Am486
®
CPU
Address
Decoder
Addr
Dual DMA
Controllers
8237
Data
Steering
Data Bus
Memory
Management
Unit
System Address Bus
Power
GPIOs
Management
Unit
Clock I/O
Clock
Generation
Real-Time
Clock
Boundary
Scan
AT Port
Logic
Timer
8254
Dual Interrupt
Controllers
8259
GPIOs or
Parallel Port
EPP
Parallel
Port
Serial Port
UART
16550
Infrared
Port
GPIOs
Memory
Controller
Internal
Bus
32-kHz Crystal
Local Bus
Controller
Local Bus Controller
System
Arbiter
GPIOs
DRAM Control
ROM Control
DRAM Control or
Keyboard Rows
GPIOs
Keyboard
Interface:
Matrix/XT/SCP
GPIOs or
Keyboard Rows
Columns or
XT Keyboard
ISA Control or
Keyboard Rows
ISA Control
ISA Control or
GPIOs
ISA Bus
Controller
GPIOs
Infrared
Élan™SC400 and ÉlanSC410 Microcontrollers Data Sheet
5
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