Datasheet, Ddr3l sdram, Unbuffered dimm – Samsung M391B5773DH0 User 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