1Gb: x4, x8, x16 DDR3 SDRAM
Speed Bin Tables
Table 52: DDR3-1333 Speed Bins
DDR3-1333 Speed Bin
CL-tRCD-tRP
-15E1
9-9-9
-152
10-10-10
Parameter
Symbol
tAA
tRCD
Min
13.5
13.5
Max
Min
15
Max
Unit Notes
Internal READ command to first data
–
–
–
–
ns
ns
ACTIVATE to internal READ or WRITE delay
time
15
PRECHARGE command period
tRP
tRC
13.5
49.5
–
–
15
51
–
–
ns
ns
ACTIVATE-to-ACTIVATE or REFRESH command
period
ACTIVATE-to-PRECHARGE command period
tRAS
36
9 x tREFI
3.3
36
9 x tREFI
3.3
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
CK
CK
3
4
CL = 5
CWL = 5
CWL = 6, 7
CWL = 5
CWL = 6
CWL = 7
CWL = 5
CWL = 6
CWL = 7
CWL = 5
CWL = 6
CWL = 7
CWL = 5, 6
CWL = 7
CWL = 5, 6
CWL = 7
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
3.0
Reserved
Reserved
5
CL = 6
2.5
3.3
2.5
3.3
4
Reserved
Reserved
5
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
5
CL = 7
CL = 8
5
1.875
<2.5
4, 5
5
Reserved
Reserved
5
1.875
<2.5
1.875
<2.5
4
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
5
CL = 9
5
1.5
Reserved
1.5 <1.875
<1.875
4, 5
5
CL = 10
1.5
<1.875
4
Supported CL settings
5, 6, 7, 8, 9, 10
5, 6, 7
5, 6, 8, 10
5, 6, 7
Supported CWL settings
Notes:
1. The -15E speed grade is backward compatible with 1066, CL = 7 (-187E).
2. The -15 speed grade is backward compatible with 1066, CL = 8 (-187).
3. tREFI depends on TOPER
.
4. 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.
5. Reserved settings are not allowed.
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1Gb_DDR3_SDRAM.pdf - Rev. L 03/13 EN
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