NS486SXLVUL Datasheet

IC型号：
NS486SXLVUL
PDF描述：
Optimized 32-Bit 486-Class Controller with On-Chip Periphera...
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470.04KB
PDF页数：
26页
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NSC

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NS486SXL Optimized 32-Bit 486-Class Controller with On-Chip Peripherals for Embedded

Systems

ADVANCE INFORMATION

December 1997

NS486

鈩?/div>

SXL

Optimized 32-Bit 486-Class Controller with On-Chip

Peripherals for Embedded Systems

General Description

The NS486SXL is a highly integrated embedded system

controller incorporating an Intel486

鈩?/div>

-class 32-bit processor

along with all of the necessary System Service Elements,

implementing a true 鈥渟ystem on a chip.鈥?It is ideally suited for

a wide variety of applications running in a segmented

protect-mode environment. The NS486SXL is the second

member of the NS486 family.

Optimized DRAM Controller (supports two banks, up to

8 Mbytes each)

Up to nine versatile, programmable chip selects

Up to eight external interrupts directly supported, and

additional interrupt expansion through an external PIC

interface

Glueless interface to ISA-type peripherals

Arbitration support for auxiliary processor

Support for External Bus Masters, allowing them to

access DRAM and on-chip Peripherals

MICROWIRE

鈩?/div>

/Access.bus synchronous serial

interfaces

UART with IrDA v1.0 (Infrared Data Association) port

Reconfigurable I/O: Up to 28 I/O pins can be used as

general purpose bidirectional I/O lines

Flexible, programmable, multilevel power saving modes

maximize power savings

Programming model compatible with the NS486SXF

where possible

Features

100% compatible with VxWorks

鈩?/div>

, VRTX

鈩?/div>

, QNX

鈩?/div>

Neutrino, pSOS +

庐

, and other popular real-time

executives and operating system kernels

Intel486 instruction set compatible (protected mode only)

with optimized performance

Operation at 25 MHz with 5V supply

Low cost 132-pin PQFP package

Industry standard interrupt controller, timers, and real

time clock

Protected WATCHDOG

鈩?/div>

timer

Block Diagram NS486SXL Single-Chip Embedded Controller

DS100121-1

MICROWIRE

鈩?/div>

, NS486

鈩?/div>

and WATCHDOG

鈩?/div>

are trademarks of National Semiconductor Corporation.

TRI-STATE

庐

is a registered trademark of National Semiconductor Corporation.

Intel486

鈩?/div>

is a trademaek of Intel Corporation.

pSOS +

鈩?/div>

is a trademark of Integrated Systems, Inc.

VRTX

鈩?/div>

is a registered trademark of Microtec Research, Inc.

PowerPack

庐

is a registered trademark of Microtek International.

QNX

鈩?/div>

is a registered trademark of QNX Software Systems, Inc.

VxWorks

鈩?/div>

is a registered trademark of Wind River Systems, Inc.

漏 1998 National Semiconductor Corporation

DS100121

www.national.com

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