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UM8237A-4

UMC
Part Number UM8237A-4
Manufacturer UMC
Description Programmable DMA Controller
Published Jan 31, 2017
Detailed Description eUMC UM8237A/ 8237A-4/ 8237A-5 Programmable DMA Controller (DMAC) Features • Enable/Disable control of individual DMA ...
Datasheet PDF File UM8237A-4 PDF File

UM8237A-4
UM8237A-4

Overview
eUMC UM8237A/ 8237A-4/ 8237A-5 Programmable DMA Controller (DMAC) Features • Enable/Disable control of individual DMA requests • Four independent DMA channels • Independent autoinitialization of all channels • Memory-to-memory transfers • Memory block initialization • Single 5V power supply • High performance: transfers up to 1.
6M bytes/second with 5MHz 8237A-5 • Directly expandable to any number of channels • End of process input for terminating transfers • Software DMA requests • Independent Polarity control for DREQ and DACK signals • Available in EXPRESS - Standard Temperature Range General Description The UM8237A Direct Memory Access Controller (DMAC) is a peripheral interface circuit for microprocessor systems.
It is designed to improve system performance by allowing external devices to directly transfer information from the system memory.
Memory-tb-memory' transfer capability is also provided.
The LJ M8237A offers a wide variety of programmable contro...


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