1Gb: x4, x8, x16 DDR3 SDRAM
Speed Bin Tables
Table 55: DDR3-2133 Speed Bins
DDR3-2133 Speed Bin
-0931
CL-tRCD-tRP
14-14-14
Parameter
Symbol
tAA
tRCD
tRP
tRC
tRAS
Min
13.09
13.09
13.09
46.13
33
Max
Unit
Notes
Internal READ command to first data
ACTIVATE to internal READ or WRITE delay time
PRECHARGE command period
ACTIVATE-to-ACTIVATE or REFRESH command period
ACTIVATE-to-PRECHARGE command period
20
–
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
CK
CK
–
–
9 x tREFI
3.3
2
3
4
3
4
4
3
4
3
4
4
3
4
3
4
4
3
4
4
4
4
3
4
3
CL = 5
CL = 6
CL = 7
CL = 8
CWL = 5
tCK (AVG)
tCK (AVG)
tCK (AVG)
tCK (AVG)
tCK (AVG)
tCK (AVG)
tCK (AVG)
tCK (AVG)
tCK (AVG)
tCK (AVG)
tCK (AVG)
tCK (AVG)
tCK (AVG)
tCK (AVG)
tCK (AVG)
tCK (AVG)
tCK (AVG)
tCK (AVG)
tCK (AVG)
tCK (AVG)
tCK (AVG)
tCK (AVG)
tCK (AVG)
3.0
CWL = 6, 7, 8, 9
CWL = 5
Reserved
2.5
3.3
CWL = 6, 7, 8, 9
CWL = 5, 7, 8, 9
CWL = 6
Reserved
Reserved
1.875
<2.5
<2.5
CWL = 5, 8, 9
CWL = 6
Reserved
1.875
CWL = 7
Reserved
Reserved
CL = 9
CWL = 5, 6, 8, 9
CWL = 7
1.5
1.5
<1.875
Reserved
<1.875
Reserved
CL = 10
CWL = 5, 6, 9
CWL = 7
CWL = 8
CL = 11
CWL = 5, 6, 7
CWL = 8
Reserved
1.25
<1.5
CWL = 9
Reserved
Reserved
Reserved
Reserved
CL = 12
CL = 13
CL = 14
CWL = 5, 6, 7, 8
CWL = 9
CWL = 5, 6, 7, 8
CWL = 9
1.071
<1.25
Reserved
<1.071
CWL = 5, 6, 7, 8, 9
CWL = 10
Reserved
0.938
Supported CL settings
Supported CWL settings
5, 6, 7, 8, 9, 10, 11, 13, 14
5, 6, 7, 8, 9
1. The -093 speed grade is backward compatible with 1866, CL = 13 (-107) , 1600, CL = 11
(-125) , 1333, CL = 9 (-15E) and 1066, CL = 7 (-187E).
Notes:
2. tREFI depends on TOPER
.
3. The CL and CWL settings result in tCK requirements. When making a selection of tCK,
both CL and CWL requirement settings need to be fulfilled.
4. Reserved settings are not allowed.
PDF: 09005aef826aa906
1Gb_DDR3_SDRAM.pdf - Rev. L 03/13 EN
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