Samsung M391B5773DH0 - Manual (Page 27)

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datasheet
DDR3L SDRAM
Rev. 1.0
Unbuffered DIMM
[ Table 18 ] DDR3-1066 Speed Bins
[ Table 19 ] DDR3-1333 Speed Bins
Speed DDR3-1066
Units 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 1,2,3,5
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 1,2,3,4,8
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
Speed DDR3-1333
Units NOTE CL-nRCD-nRP 9 -9 - 9
Parameter Symbol min max
Internal read command to first data tAA 13.5 (13.125) 8 20 ns
ACT to internal read or write delay time tRCD 13.5 (13.125) 8 - ns
PRE command period tRP 13.5 (13.125) 8 - ns
ACT to ACT or REF command period tRC 49.5 (49.125) 8 - ns
ACT to PRE command period tRAS 36 9*tREFI ns
CL = 6
CWL = 5 tCK(AVG) 2.5 3.3 ns 1,2,3,6
CWL = 6 tCK(AVG) Reserved ns 1,2,3,4,6
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 1,2,3,4,6
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 1,2,3,6
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 1,2,3,4,8
CL = 10
CWL = 5,6 tCK(AVG) Reserved ns 4
CWL = 7 tCK(AVG) Reserved ns 1,2,3
Supported CL Settings 6,7,8,9 nCK
Supported CWL Settings 5,6,7 nCK