Specification Sheet

8
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DDR3-1066 Speed Bins and Operations
Speed Bin
DDR3-1066F
Unit
Note
CL - nRCD - nRP
7-7-7
Parameter
Symbol
min
max
Internal read command to
first data
tAA
13.125
20
ns
ACT to internal read or
write delay time
tRCD
13.125
—
ns
PRE command period
tRP
13.125
—
ns
ACT to ACT or REF
command period
tRC
50.625
—
ns
ACT to PRE command
period
tRAS
37.5
9 * tREFI
ns
CL = 6
CWL = 5
tCK(AVG)
2.5
3.3
ns
1,2,3,6
CWL = 6
tCK(AVG)
Reserved
ns
1,2,3,4
CL = 7
CWL = 5
tCK(AVG)
Reserved
ns
4
CWL = 6
tCK(AVG)
1.875
< 2.5
ns
1,2,3,4
CL = 8
CWL = 5
tCK(AVG)
Reserved
ns
4
CWL = 6
tCK(AVG)
1.875
< 2.5
ns
1,2,3
Supported CL Settings
6, 7, 8
nCK
Supported CWL Settings
5, 6
nCK