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INS8257

Part Number	INS8257
Manufacturer	National Semiconductor
Description	Programmable DMA Controller
Published	Apr 12, 2024
Detailed Description	~National ~ Semiconductor Preliminary JULY 1978. -Z ~ INS8257 Programmable DMA Controller "tJ c8 General Descriptio...
Datasheet	INS8257 PDF File

Overview

...n ;; The INS8257 is a Direct Memory Access (DMA) con· troller contained in a standard 40·pin dual·in·line The channel control registers consist of four 16·bit DMA address registers and four 16·bit terminal count 3 3 package.
The chip, which is fabricated using (TC) registers.
These registers provide the means for S» N·channel silicon gate technology, performs direct con·trolling DMA transfers on their respective C" control of high speed data transfers to and from channels.
CD memory over four separate channels.
Data can be transferred in single bytes or in blocks containing up The auto load feature permits the repetition of block c to 16,384 bytes.
The INS8257 accepts reques...

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