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HT6551 Datasheet

Super I/o Controller

Manufacturer: Holtek Microelectronics

HT6551 Overview

The HT6551 super Multi I/O chip, is an advanced CMOS single chip controller offering the plete I/O solutions for the IBM AT environments. It incorporates one floppy disk controller (FDC), two full function UARTs, one parallel port, one bus mouse port, one game port controller, IDE hard disk drive interface, standard AT address decoding for on chip function and four configuration registers in one chip. It is...

HT6551 Key Features

  • 100% patible to IBM PC AT/XT
  • Fully IBM-BIOS patible floppy disk
  • 48mA floppy drive interface buffers
  • Support two floppy drives with capability
  • Support 360K/720K/1.2M/1.44M/2.88M formats
  • Support 250Kb/s, 300Kb/s, 500Kb/s, 1Mb/s data rate
  • Digital data separator eliminates critical analog adjustments
  • Two 16550 patible UARTs
  • Independent control of transmit,receive,line status and data set interrupts on each channel
  • Individual modem control signals for each channel

HT6551 Distributor