Datasheet

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DDR3 SDRAM
Rev. 1.03 July 2009
Unbuffered DIMM
DDR3-1333 Speed Bins
Speed DDR3-1333
Units NoteCL-nRCD-nRP 9 -9 - 9
Parameter Symbol min max
Internal read command to first data tAA 13.5 (13.125)
5,9
20 ns
ACT to internal read or write delay time tRCD 13.5 (13.125)
5,9
- ns
PRE command period tRP 13.5 (13.125)
5,9
- ns
ACT to ACT or REF command period tRC 49.5 (49.125)
5,9
- ns
ACT to PRE command period tRAS 36 9*tREFI ns 8
CL = 6
CWL = 5 tCK(AVG) 2.5 3.3 ns 1,2,3,7
CWL = 6 tCK(AVG) Reserved ns 1,2,3,4,7
CWL = 7 tCK(AVG) Reserved ns 4
CL = 7
CWL = 5 tCK(AVG) Reserved ns 4
CWL = 6 tCK(AVG)
1.875 <2.5
ns 1,2,3,4,7
(Optional) Note 5,9
CWL = 7 tCK(AVG) Reserved ns 1,2,3,4,
CL = 8
CWL = 5 tCK(AVG) Reserved ns 4
CWL = 6 tCK(AVG) 1.875 <2.5 ns 1,2,3,7
CWL = 7 tCK(AVG) Reserved ns 1,2,3,4,
CL = 9
CWL = 5,6 tCK(AVG) Reserved ns 4
CWL = 7 tCK(AVG) 1.5 <1.875 ns 1,2,3,4
CL = 10
CWL = 5,6 tCK(AVG) Reserved ns 4
CWL = 7 tCK(AVG)
1.5 <1.875 ns 1,2,3
(Optional) ns 5
Supported CL Settings 6,7,8,9 nCK
Supported CWL Settings 5,6,7 nCK