Hynix 8GB DDR3 PC3-12800 HMT31GR7CFR4C-PB User Manual
Product codes
HMT31GR7CFR4C-PB
Rev. 1.0 / Jul. 2012
45
Refresh parameters by device density
Refresh parameters by device density
Parameter
RTT_Nom Setting
512Mb
1Gb
2Gb
4Gb
8Gb
Units Notes
REF command ACT or
REF command time
tRFC
90
110
160
260
350
ns
Average periodic
refresh interval
tREFI
0
C
T
CASE
85
C
7.8
7.8
7.8
7.8
7.8
us
85
C
T
CASE
95
C
3.9
3.9
3.9
3.9
3.9
us
1