H5PS5182GFRS6I datasheet(43/64 Pages) HYNIX

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H5PS5182GFRS6I 数据表(PDF) 43 Page - Hynix Semiconductor

部件名	H5PS5182GFRS6I

功能描述	512Mb DDR2 SDRAM

Download	64 Pages

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制造商	HYNIX [Hynix Semiconductor]

网页	http://www.skhynix.com/kor/main.do

标志

43 / 64 page

Rev.1.7 / Feb. 2013

H5PS5162GFR series

to 0.5. For example, if an input clock has a worst case tCH (avg) of 0.48, the tAOF, min should be derated

by subtracting 0.02 x tCK (avg) from it, whereas if an input clock has a worst case tCH (avg) of 0.52, the

tAOF, max should be derated by adding 0.02 x tCK (avg) to it. Therefore, we have;

tAOF, min (derated) = tAC, min - [0.5 - Min(0.5, tCH (avg), min)] x tCK (avg)

tAOF, max (derated) = tAC, max + 0.6 + [Max(0.5, tCH (avg), max) - 0.5] x tCK (avg)

tAOF, min (derated) = Min (tAC, min, tAC, min - [0.5 - tCH (avg), min] x tCK (avg))

tAOF, max (derated) = 0.6 + Max (tAC, max, tAC, max + [tCH (avg), max - 0.5] x tCK (avg))

where tCH (avg), min and tCH (avg), max are the minimum and maximum of tCH (avg) actually measured

at the DRAM input balls.

Note that these deratings are in addition to the tAOF derating per input clock jitter, i.e. tJIT (duty) and

tERR(6-10per). However tAC values used in the equations shown above are from the timing parameter

table and are not derated. Thus the final derated values for tAOF are;

tAOF, min (derated _ final) = tAOF, min (derated) + {- tJIT (duty), max - tERR(6-10per),max}

tAOF, max (derated _ final) = tAOF, max (derated) + {- tJIT (duty), min - tERR(6-10per),min}

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