Datasheet4U Logo Datasheet4U.com

HT6551 - Super I/O Controller

General Description

The HT6551 super Multi I/O chip, is an advanced CMOS single chip controller offering the complete I/O solutions for the IBM AT environments.

Key Features

  • 100% compatible to IBM PC AT/XT.
  • Fully IBM.
  • BIOS compatible floppy disk controller.
  • 48mA floppy drive interface buffers.
  • Support two floppy drives with capability of supporting up to four drives with an external decoder.
  • 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 compatible UARTs.
  • Ind.

📥 Download Datasheet

Datasheet Details

Part number HT6551
Manufacturer Holtek Microelectronics
File Size 547.73 KB
Description Super I/O Controller
Datasheet download datasheet HT6551 Datasheet

📁 Similar Datasheet

Part Number Description Manufacturer
HT651 318 Series of Decoders Holtek Semiconductor Inc
HT651023B LVDS serializer/decoder transmitter HTCSEMI
HT651024B LVDS serializer/decoder transmitter HTCSEMI
HT6513 Mouse Controller Holtek Semiconductor Inc
HT6513B M+ Plug & Play Mouse Controller Holtek Semiconductor

Other Datasheets by Holtek Microelectronics

Part Number Description
HT6550 Super I/O Controller
HT6550A Super I/O Controller
HT6560A VL-Bus IDE Controler
HT6560B VL-Bus IDE Controler
HT6570 I/O TTL Integration

Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

View original datasheet text
HT6551 Super I/O Controller Features • 100% compatible to IBM PC AT/XT • Fully IBM–BIOS compatible floppy disk controller – 48mA floppy drive interface buffers – Support two floppy drives with capability of supporting up to four drives with an external decoder – 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 compatible UARTs – Independent control of transmit,receive,line status and data set interrupts on each channel – Individual modem control signals for each channel – Programmable serial interface charac- teristics for each channel: 16 Byte FIFOS 5-, 6-, 7-, or 8-bit characters Even,odd or no parity bit generation and detection 1-, 1.