Unbuffered DIMM
datasheet
Rev. 1.0
DDR3L SDRAM
[ Table 18 ] DDR3-1066 Speed Bins
Speed |
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| 7 - 7 - 7 |
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Parameter |
| Symbol | min |
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| max |
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Internal read command to first data |
| tAA | 13.125 |
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| 20 | ns |
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ACT to internal read or write delay time | tRCD | 13.125 |
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| - | ns |
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PRE command period |
| tRP | 13.125 |
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| - | ns |
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ACT to ACT or REF command period | tRC | 50.625 |
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| - | ns |
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ACT to PRE command period |
| tRAS | 37.5 |
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| 9*tREFI | ns |
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CL = 6 |
| CWL = 5 | tCK(AVG) | 2.5 |
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| 3.3 | ns | 1,2,3,5 | |
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| CWL = 6 | tCK(AVG) | Reserved |
| ns | 1,2,3,4 | ||||
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CL = 7 |
| CWL = 5 | tCK(AVG) | Reserved |
| ns | 4 | |||
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| CWL = 6 | tCK(AVG) | 1.875 |
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| <2.5 | ns | 1,2,3,4,8 | ||
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CL = 8 |
| CWL = 5 | tCK(AVG) | Reserved |
| ns | 4 | |||
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| CWL = 6 | tCK(AVG) | 1.875 |
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| <2.5 | ns | 1,2,3 | ||
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Supported CL Settings |
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| 6,7,8 |
| nCK |
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Supported CWL Settings |
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| 5,6 |
| nCK |
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[ Table 19 ] |
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Speed |
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| 9 |
| Units | NOTE | ||||||
Parameter |
| Symbol | min |
| max |
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Internal read command to first data |
| tAA | 13.5 (13.125)8 |
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| 20 | ns |
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ACT to internal read or write delay time | tRCD | 13.5 (13.125)8 |
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| - | ns |
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PRE command period |
| tRP | 13.5 (13.125)8 |
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| - | ns |
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ACT to ACT or REF command period | tRC | 49.5 (49.125)8 |
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| - | ns |
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ACT to PRE command period |
| tRAS | 36 |
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| 9*tREFI | ns |
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| CWL = 5 | tCK(AVG) | 2.5 |
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| 3.3 | ns | 1,2,3,6 |
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CL = 6 |
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| CWL = 6 | tCK(AVG) | Reserved |
| ns | 1,2,3,4,6 | ||
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| CWL = 7 | tCK(AVG) | Reserved |
| ns | 4 | ||
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| CWL = 5 | tCK(AVG) | Reserved |
| ns | 4 | ||
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CL = 7 |
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| CWL = 6 | tCK(AVG) | 1.875 |
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| <2.5 | ns | 1,2,3,4,6 |
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| CWL = 7 | tCK(AVG) | Reserved |
| ns | 1,2,3,4 | ||
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| CWL = 5 | tCK(AVG) | Reserved |
| ns | 4 | ||
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CL = 8 |
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| CWL = 6 | tCK(AVG) | 1.875 |
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| <2.5 | ns | 1,2,3,6 |
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| CWL = 7 | tCK(AVG) | Reserved |
| ns | 1,2,3,4 | ||
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CL = 9 |
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| CWL = 5,6 | tCK(AVG) | Reserved |
| ns | 4 | ||
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| CWL = 7 | tCK(AVG) | 1.5 |
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| <1.875 | ns | 1,2,3,4,8 | |
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CL = 10 |
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| CWL = 5,6 | tCK(AVG) | Reserved |
| ns | 4 | ||
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| CWL = 7 | tCK(AVG) | Reserved |
| ns | 1,2,3 | |||
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Supported CL Settings |
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| 6,7,8,9 |
| nCK |
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Supported CWL Settings |
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| 5,6,7 |
| nCK |
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