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VL82C37A - CMOS DIRECT MEMORY ACCESS CONTROLLER

General Description

The VL82C37A Direct Memory Access (DMA) Controller serves as a peripheral interface circuit for microprocessor systems, and is designed to improve system performance by allowing external devices to directly transfer information from the system memory.

Key Features

  • Low-power CMOS version of popular 8237A DMA controller.
  • Four DMA channels.
  • Individual enable/disable control of DMA requests.
  • Directly expandable to any number of channels.
  • Independent auto-initialize feature for all channels.
  • High performance 8 MHz version available.
  • Transfers may be terminated by endof-process input.
  • Software controlled DMA requests.
  • Independent polarity control for DREO and DACK signals.

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Datasheet Details

Part number VL82C37A
Manufacturer VLSI
File Size 803.32 KB
Description CMOS DIRECT MEMORY ACCESS CONTROLLER
Datasheet download datasheet VL82C37A Datasheet

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e VLSI TECHNOLOGY, INC. VL82C37A CMOS DIRECT MEMORY ACCESS (DMA) CONTROLLER FEATURES • Low-power CMOS version of popular 8237A DMA controller • Four DMA channels • Individual enable/disable control of DMA requests • Directly expandable to any number of channels • Independent auto-initialize feature for all channels • High performance 8 MHz version available • Transfers may be terminated by endof-process input • Software controlled DMA requests • Independent polarity control for DREO and DACK signals DESCRIPTION The VL82C37A Direct Memory Access (DMA) Controller serves as a peripheral interface circuit for microprocessor systems, and is designed to improve system performance by allowing external devices to directly transfer information from the system memory.