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ISA Bridge Overview
ISA bus remains a popular I/O bus in many embedded system designs (e.g. single-board industrial computers). Winbond LPC-to-ISA and PCI-to-ISA Bridges are the solutions to couple legacy I/Os to industry standard buses of contemporary PC architecture with high performance CPU and memory sub-systems. Additional features include external BIOS ROM decode logic and programmable bus timings for optimum system performance.
 
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Key Features
Benefits
  • Full ISA Bus support including ISA Masters (‘628/’629 only)
  • 5V ISA and 3.3V PCI Interfaces
  • Support 3 ISA compatible slots without buffering
  • External BIOS ROM address decode output
  • GPIO (*W83626 only)
  • Support the widest type of ISA I/O devices
  • 5V/3.3V support simplifies system design
  • Direct ISA bus driving saves buffer cost
  • Saves decode logic on ISA bus for parallel flash BIOS
  • Easy to provide customized board function
Applications
  • Industrial Computers
  • Single-board Computers
  • All kinds of embedded systems with legacy I/O devices
  • Computer Development Systems

Product Selection Guide

Part Number
Description
Package
Datasheet
W83626F
LPC-to-ISA Bridge
*Not Recommended for New Designs
QFP 128
W83626G
LPC-to-ISA Bridge, Pb-free
*Not Recommended for New Designs
QFP 128
W83628F
PCI-to-ISA Bridge , Kit with W83629D.
Full ISA bus support including ISA Master
*Not Recommended for New Designs
PQFP 128
W83628G
PCI-to-ISA Bridge , Kit with W83629D.
Full ISA bus support including ISA Master; Pb-free package
*Not Recommended for New Designs
PQFP 128
W83629D
PCI-to ISA Bridge, Kit with W83628F
*Not Recommended for New Designs
LQFP 48
W83629G
PCI-to ISA Bridge, Kit with W83628F, Pb-free package
*Not Recommended for New Designs
LQFP 48