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NS486SXF PDF даташит

Спецификация NS486SXF изготовлена ​​​​«National» и имеет функцию, называемую «NS486TMSXF Optimized 32-Bit 486-Class Controller with On-Chip Peripherals for Embedded Systems».

Детали детали

Номер произв NS486SXF
Описание NS486TMSXF Optimized 32-Bit 486-Class Controller with On-Chip Peripherals for Embedded Systems
Производители National
логотип National логотип 

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NS486SXF Даташит, Описание, Даташиты
ADVANCE INFORMATION
February 1997
NS486TMSXF 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 Intel486TM-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
Key Features
Y 100% compatible with VxWorks VRTX QNX Neu-
trino pSOSaTM and other popular real-time executives
and operating system kernels
Y Intel486 instruction set compatible (protected mode
only) with optimized performance
Y CPU includes a 1 Kbyte Instruction Cache
Y Operation at 25 MHz with 5V supply
Y Low cost 160-pin PQFP package
Y Industry standard interrupt controller timers real time
clock UART with IrDA v1 0 (Infrared Data Association)
port
Y Intel 82365 compatible PCMCIA interface
Y Protected WATCHDOGTM timer
Y Optimized DRAM Controller (supports two banks up to
8 Mbytes each)
Y Up to nine versatile programmable chip selects
Y Glueless interface to ISA peripherals
Y Arbitration support for auxiliary processor
Y Four external DMA channels (max transfer rate of 25
MByte sec 25 MHz) support many transfer modes
Y High performance IEEE 1284 (ECP) Bidirectional
Parallel Port
Y MICROWIRETM Access bus synchronous serial
interfaces
Y LCD Controller for an up to 4 grey scale supertwist
Liquid Crystal Displays up to 480 X 320
Y Reconfigurable I O Up to 29 I O pins can be used as
general purpose bidirectional I O lines
Y Flexible programmable multilevel power saving modes
maximize power savings
NS486SXF Single-Chip Embedded Controller
TRI-STATE is a registered trademark of National Semiconductor Corporation
NS486TM WATCHDOGTM and MICROWIRETM are trademarks of National Semiconductor Corporation
Intel486TM 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
pSOSaTM is a trademark of Integrated Systems Inc
PowerPack is a registered trademark of Microtek International
C1996 National Semiconductor Corporation TL EE12514
RRD-B30M27 Printed in U S A
TL EE 12514 – 1
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NS486SXF Даташит, Описание, Даташиты
Table of Contents
1 0 SYSTEM OVERVIEW
1 1 NS486SXF System Overview
1 2 32-bit Processor Core
1 3 System Service Elements
1 3 1 DRAM Controller
1 3 2 DMA Controller
1 3 3 Programmable Interval Timer
1 3 4 WATCHDOG Timer
1 3 5 Interrupt Controller
1 3 6 Real Time Clock Calendar
1 3 7 Power Management Features
1 4 NS486SXF System Bus
1 5 Other On-board Peripherals
1 5 1 Reconfigurable I O Lines
1 5 2 IEEE 1284 Bidirectional Port
1 5 3 PCMCIA Interface
1 5 4 MICROWIRE Access bus Interface
1 5 5 UART Serial Port
1 5 6 LCD Controller
1 6 ICE Support
1 7 Other Issues
2 0 PIN DESCRIPTION TABLES
3 0 DEVICE SPECIFICATIONS
3 1 DC Electrical Specifications 5V g 5%
3 1 1 Recommended Operating Conditions
3 1 2 Absolute Maximum Ratings (Notes 2 and 3)
3 1 3 Capacitance TA e 25 C f e 1 MHz
3 1 4 DC Characteristics
3 2 General AC Specifications
3 2 1 Power Ramp Times
3 2 2 PWRGOOD and Power Rampdown Timing
3 3 AC Switching Specifications
3 3 1 DRAM Interface Timing Specification
3 3 2 ISA-like Bus Cycles Timing Specification
3 3 3 Ready Feedback Timing Specifications
3 3 4 OSCX1 AC Specification
3 3 5 Peripheral Timing Specifications
3 4 Physical Description
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NS486SXF Даташит, Описание, Даташиты
FIGURE 1-1
FIGURE 1-2
FIGURE 2-1
FIGURE 3-1
FIGURE 3-2
FIGURE 3-3
FIGURE 3-4
FIGURE 3-5
FIGURE 3-6
FIGURE 3-7
FIGURE 3-8
FIGURE 3-9
FIGURE 3-10
FIGURE 3-11
FIGURE 3-12
FIGURE 3-13
FIGURE 3-14
FIGURE 3-15
FIGURE 3-16
FIGURE 3-17
FIGURE 3-18
FIGURE 3-19
FIGURE 3-20
FIGURE 3-21
FIGURE 3-22
List of Figures
NS486SXF Internal Resource to Pins Map
NS486SXF Internal Busses
NS486SXF Package Pinout Diagram
Switching Characteristic Measurement Waveforms
More Switching Specifications
Power Supply Rise and Fall
PWGOOD in relation to VDD
DRAM Timing Diagram
ISA-like Bus Timing Diagram
Ready Feedback Timing Diagram
TTL Clock Input Timing Diagram
DMA Controller Read Timing Diagram
DMA Controller Write Timing Diagram
PIC Timing Diagram
Memory Read Timing
Memory Write Timing Diagram
I O Read Timing
I O Write Timing Diagram
Access bus Timing Diagram
UART Baud Rate and Infrared Clocks
UART IRQ Timing
UART Modem Control Timing
LCD Controller Timing Diagram
Testmode Timing Diagram
Plastic Package Specifications
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Номер в каталогеОписаниеПроизводители
NS486SXFNS486 SXF Optimized 32-Bit 486-Class Cntrll w/On-Chip Peri for Embedded Sys (Rev. A)Texas Instruments
Texas Instruments
NS486SXFNS486TMSXF Optimized 32-Bit 486-Class Controller with On-Chip Peripherals for Embedded SystemsNational
National
NS486SXLOptimized 32-Bit 486-Class Controller with On-Chip Peripherals for Embedded SystemsNational
National
NS486SXLVULOptimized 32-Bit 486-Class Controller with On-Chip Peripherals for Embedded SystemsNational Semiconductor
National Semiconductor

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