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Intel
Intel

80486GX Datasheet Preview

80486GX Datasheet

Embedded Ultra-Low Power Processor

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80486GX pdf
EMBEDDED ULTRA-LOW POWER Intel486GX PROCESSOR
s Ultra-Low Power Member of the Intel486™ s 16-Bit External Data Bus
Processor Family
— 32-Bit RISC Technology Core
— 8-Kbyte Write-Through Cache
— Four Internal Write Buffers
s 176-Lead Thin Quad Flat Pack (TQFP)
s Separate Voltage Supply for Core Circuitry
s Fast Core-Clock Restart
— Burst Bus Cycles
s Auto Clock Freeze
— Data Bus Parity Generation and
Checking
s Ideal for Embedded Battery-Operated and
Hand-Held Applications
— Intel System Management Mode (SMM)
— Boundary Scan (JTAG)
Barrel
Shifter
Register
File
ALU
Base/
Index
Bus
32
64-Bit Interunit Transfer Bus
32-Bit Data Bus
32
32-Bit Data Bus
32
Linear Address
32
Segmentation
Unit
Descriptor
Registers
Limit and
Attribute PLA
Paging
Unit
PCD
PWT
2
20
Translation
Lookaside
Buffer
Physical
Address
Cache Unit
8 Kbyte
Cache
Core
Clock
Clock
Control
CLK Input
Bus Interface
32 Address
Drivers
Write Buffers
32 4 x 32
Data Bus
32 Transceivers
A31-A2
BE3#- BE0#
D15-D0
Micro-
Instruction
Displacement Bus
32
128
Prefetcher
Control &
Protection
Test Unit
Instruction
Decode
Code
Stream
24
32-Byte Code
Queue
2x16 Bytes
Control
ROM
Decoded
Instruction
Path
Bus Control
Request
Sequencer
Burst Bus
Control
ADS# W/R# D/C# M/IO#
PCD PWT RDY# LOCK#
PLOCK# BOFF# A20M#
BREQ HOLD HLDA
RESET SRESET INTR
NMI SMI# SMIACT#
STPCLK#
BRDY# BLAST#
Parity
Generation
and Control
Cache
Control
Boundary
Scan
Control
DP1-DP0, PCHK#
KEN# FLUSH#
AHOLD EADS#
TCK TMS
TDI TD0
A5851-01
Figure 1. Embedded Ultra-Low Power Intel486™ GX Processor Block Diagram
© INTEL CORPORATION, 1997
December 1997
Order Number: 272755-002



Intel
Intel

80486GX Datasheet Preview

80486GX Datasheet

Embedded Ultra-Low Power Processor

No Preview Available !

80486GX pdf
Information in this document is provided in connection with Intel products. No license, express or implied, by
estoppel or otherwise, to any intellectual property rights is granted by this document. Except as provided in
Intel’s Terms and Conditions of Sale for such products, Intel assumes no liability whatsoever, and Intel
disclaims any express or implied warranty, relating to sale and/or use of Intel products including liability or
warranties relating to fitness for a particular purpose, merchantability, or infringement of any patent, copyright
or other intellectual property right. Intel products are not intended for use in medical, life saving, or life
sustaining applications.
Intel may make changes to specifications and product descriptions at any time, without notice.
Designers must not rely on the absence or characteristics of any features or instructions marked "reserved" or
"undefined." Intel reserves these for future definition and shall have no responsibility whatsoever for conflicts or
incompatibilities arising from future changes to them.
The Embedded Ultra-Low Power Intel486™ GX processor may contain design defects or errors known as
errata which may cause the product to deviate from published specifications. Current characterized errata are
available on request.
Contact your local Intel sales office or your distributor to obtain the latest specifications and before placing your
product order.
Copies of documents which have an ordering number and are referenced in this document, or other Intel
literature may be obtained by calling 1-800-548-4725 or by visiting Intel's website at http://www.intel.com.
Copyright © Intel Corporation, 1997
*Third-party brands and names are the property of their respective owners.


Part Number 80486GX
Description Embedded Ultra-Low Power Processor
Maker Intel
Total Page 30 Pages
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