Hynix 8GB DDR3 PC3-12800 HMT31GR7CFR4C-PB User Manual
Product codes
HMT31GR7CFR4C-PB
Rev. 1.0 / Jul. 2012
47
DDR3-1066 Speed Bins
Speed Bin
DDR3-1066F
Unit
Note
CL - nRCD - nRP
7-7-7
Parameter
Symbol
min
max
Internal read command to
first data
t
AA
13.125
20
ns
ACT to internal read or
write delay time
t
RCD
13.125
—
ns
PRE command period
t
RP
13.125
—
ns
ACT to ACT or REF
command period
t
RC
50.625
—
ns
ACT to PRE command
period
t
RAS
37.5
9 * tREFI
ns
CL = 6
CWL = 5
t
CK(AVG)
2.5
3.3
ns
1,2,3,6
CWL = 6
t
CK(AVG)
Reserved
ns
1,2,3,4
CL = 7
CWL = 5
t
CK(AVG)
Reserved
ns
4
CWL = 6
t
CK(AVG)
1.875
< 2.5
ns
1,2,3,4
CL = 8
CWL = 5
t
CK(AVG)
Reserved
ns
4
CWL = 6
t
CK(AVG)
1.875
< 2.5
ns
1,2,3
Supported CL Settings
6, 7, 8
n
CK
Supported CWL Settings
5, 6
n
CK