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HMT451R7AFR8A Datasheet, PDF (43/72 Pages) Hynix Semiconductor – DDR3L SDRAM Registered DIMM Based on 4Gb A-die
Refresh parameters by device density
Refresh parameters by device density
Parameter
RTT_Nom Setting
512Mb 1Gb 2Gb 4Gb
REF command ACT or
REF command time
tRFC
90
110
160
260
Average periodic
refresh interval
tREFI
0 C  TCASE  85 C
85 C  TCASE  95 C
7.8
3.9
7.8
3.9
7.8
3.9
7.8
3.9
8Gb Units Notes
350 ns
7.8 us
3.9 us 1
Rev. 0.1 / Jul. 2012
43