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INS8154 - N-Channel 128-by-8 Bit RAM Input/Output

Datasheet Summary

Description

The RAM Input/Output Chip if'.' LSI device wh/ch provides random access memor' Peripheral interfacing for microcomputer syste he RAM portion contains 1024 bits of static R anized as 128x8, The 1/0 portion consists of t ripheral ports of eight bits each.

Features

  • 0 0 0 0 0 0 ::r m . 128x8RAM Single +5-volt power s' plV Low power dissipatio CD 0 0 0 0 0 0 Fully static operation Completely TTL com Two 8-bit programma 1/0 port A has TRI-S ~ CD ibl~Î" ji c::r . '1/0 ports ;J'El!!> capability Handshake controls Single bit 1/0 operati Reduces system packs strobed mode of operation with single instruction cou nt '< ëo tU _0 - Direct interface with Independent operatio" " , JMP f RAM and 1/0.

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Datasheet Details

Part number INS8154
Manufacturer National Semiconductor
File Size 611.39 KB
Description N-Channel 128-by-8 Bit RAM Input/Output
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Full PDF Text Transcription

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e~.National ~ Semiconcluctor INS&154 N.ChanRel 12&.by.& Bit RAM Input/Outriit (RAM 1/0) General Description The RAM Input/Output Chip if'.' LSI device wh/ch provides random access memor' Peripheral interfacing for microcomputer syste he RAM portion contains 1024 bits of static R anized as 128x8, The 1/0 portion consists of t ripheral ports of eight bits each. Each of the 1/0 im ln the two ports may be defined as an input or': -output to provide maximum flexibility. Each port iv be read from or written to in a parallel (8-bit b ' (mode. To improve efficiency and simplify programrijing in control-based applications, a single bit of 1/0 II' either port may be Set, cleared or read with a single rrilcTOprocessor instruction.
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