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DP8404

Part Number	DP8404
Manufacturer	National Semiconductor
Description	Error Detection and Correction Circuits
Published	Jan 7, 2016
Detailed Description	DP8402A DP8403 DP8404 DP8405 32-Bit Parallel Error Detection and Correction Circuits (EDAC’s) Obsolete PRELIMINARY Aug...
Datasheet	DP8404 PDF File

Overview

DP8402A DP8403 DP8404 DP8405 32-Bit Parallel Error Detection and Correction Circuits (EDAC’s) Obsolete PRELIMINARY August 1989 DP8402A DP8403 DP8404 DP8405 32-Bit Parallel Error Detection and Correction Circuits (EDAC’s) General Description The DP8402A DP8403 DP8404 and DP8405 devices are 32-bit parallel error detection and correction circuits (EDACs) in 52-pin DP8402A and DP8403 or 48-pin DP8404 and DP8405 600-mil packages The EDACs use a modified Hamming code to generate a 7-bit check word from a 32-bit data word This check word is stored along with the data word during the memory write cycle During the memory read cycle the 39-bit words from memory are processed by the EDACs to determ...

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