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NS486SXF Datasheet

  • NS486SXF

  • NS486TMSXF Optimized 32-Bit 486-Class Controller with On-Chi...

  • 443.98KB

  • 44頁

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NS486SXF Optimized 32-Bit 486-Class Controller
with On-Chip Peripherals for Embedded Systems
ADVANCE INFORMATION
February 1997
NS486
TM
SXF Optimized 32-Bit 486-Class Controller
with On-Chip Peripherals for Embedded Systems
General Description
The NS486SXF is a highly integrated embedded system
controller incorporating an Intel486
TM
-class 32-bit proces-
sor all of the necessary System Service Elements and a
set of peripheral I O controllers tailored for embedded con-
trol systems It is ideally suited for a wide variety of applica-
tions running in a segmented protect-mode environment
Y
Y
Y
Y
Y
Y
Y
Key Features
Y
Y
Y
Y
Y
Y
100% compatible with VxWorks VRTX QNX Neu-
trino pSOS
a
TM
and other popular real-time executives
and operating system kernels
Intel486 instruction set compatible (protected mode
only) with optimized performance
CPU includes a 1 Kbyte Instruction Cache
Operation at 25 MHz with 5V supply
Low cost 160-pin PQFP package
Industry standard interrupt controller timers real time
clock UART with IrDA v1 0 (Infrared Data Association)
port
Y
Y
Y
Y
Y
Intel 82365 compatible PCMCIA interface
Protected WATCHDOG
TM
timer
Optimized DRAM Controller (supports two banks up to
8 Mbytes each)
Up to nine versatile programmable chip selects
Glueless interface to ISA peripherals
Arbitration support for auxiliary processor
Four external DMA channels (max transfer rate of 25
MByte sec
25 MHz) support many transfer modes
High performance IEEE 1284 (ECP) Bidirectional
Parallel Port
MICROWIRE
TM
Access bus synchronous serial
interfaces
LCD Controller for an up to 4 grey scale supertwist
Liquid Crystal Displays up to 480 X 320
Reconfigurable I O Up to 29 I O pins can be used as
general purpose bidirectional I O lines
Flexible programmable multilevel power saving modes
maximize power savings
NS486SXF Single-Chip Embedded Controller
TL EE 12514 鈥?
TRI-STATE is a registered trademark of National Semiconductor Corporation
NS486
TM
WATCHDOG
TM
and MICROWIRE
TM
are trademarks of National Semiconductor Corporation
Intel486
TM
is a trademark of Intel Corporation
QNX is a registered trademark of QNX Software Systems Inc
VRTX is a registered trademark of Microtec Research Inc
VxWorks is a registered trademark of Wind River Systems Inc
pSOS
a
TM
is a trademark of Integrated Systems Inc
PowerPack is a registered trademark of Microtek International
C
1996 National Semiconductor Corporation
TL EE12514
RRD-B30M27 Printed in U S A
http
www national com

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