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82C37A - CMOS High PerformanceProgrammable DMA Controller

General Description

SYMBOL PIN NUMBER VCC 31 GND 20 CLK 12 CS 11 RESET 13 READY 6 HLDA 7 DREQ0DREQ3 16-19 DB0-DB7 21-23 26-30 IOR 1 IOW 2 TYPE

Key Features

  • for flexible operation. The 82C37A is designed to be used with an external address latch, such as the 82C82, to demultiplex the most significant 8-bits of address. The 82C37A can be used with industry standard microprocessors such as 80C286, 80286, 80C86, 80C88, 8086, 8088, 8085, Z80, NSC800, 80186 and others. Multimode programmability allows the user to select from three basic types of DMA services, and reconfiguration under program control is possible even with the clock to the controller stop.

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Datasheet Details

Part number 82C37A
Manufacturer Renesas
File Size 1.14 MB
Description CMOS High PerformanceProgrammable DMA Controller
Datasheet download datasheet 82C37A Datasheet

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Full PDF Text Transcription (Reference)

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DATASHEET 82C37A CMOS High PerformanceProgrammable DMA Controller FN2967 Rev 4.00 October 2, 2015 The 82C37A is an enhanced version of the industry standard 8237A Direct Memory Access (DMA) controller, fabricated using Intersil’s advanced 2 micron CMOS process. Pin compatible with NMOS designs, the 82C37A offers increased functionality, improved performance, and dramatically reduced power consumption. The fully static design permits gated clock operation for even further reduction of power. The 82C37A controller can improve system performance by allowing external devices to transfer data directly to or from system memory. Memory-to-memory transfer capability is also provided, along with a memory block initialization feature.