![](/images/new-backgrounds/1204826/20482653x1.webp)
Unbuffered DIMM
datasheet
Rev. 1.0
DDR3L SDRAM
[ Table 18 ] DDR3-1066 Speed Bins
Speed |
|
|
|
|
| |||||
| 7 - 7 - 7 |
| Units | NOTE | ||||||
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 |
| ||||
|
|
|
|
|
|
|
|
|
|
|
[ Table 19 ] |
|
|
|
|
|
|
|
| ||
|
|
|
|
|
|
|
|
|
|
|
Speed |
|
|
|
|
| |||||
| 9 |
| Units | NOTE | ||||||
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 |
| ||
|
|
|
|
|
|
|
|
|
|
|
|
|
| CWL = 5 | tCK(AVG) | 2.5 |
|
| 3.3 | ns | 1,2,3,6 |
|
|
|
|
|
|
|
|
| ||
CL = 6 |
|
| CWL = 6 | tCK(AVG) | Reserved |
| ns | 1,2,3,4,6 | ||
|
|
|
|
|
|
|
|
| ||
|
|
| CWL = 7 | tCK(AVG) | Reserved |
| ns | 4 | ||
|
|
|
|
|
|
|
|
| ||
|
|
| CWL = 5 | tCK(AVG) | Reserved |
| ns | 4 | ||
|
|
|
|
|
|
|
|
|
| |
CL = 7 |
|
| CWL = 6 | tCK(AVG) | 1.875 |
|
| <2.5 | ns | 1,2,3,4,6 |
|
|
|
|
|
|
|
|
|
| |
|
|
| CWL = 7 | tCK(AVG) | Reserved |
| ns | 1,2,3,4 | ||
|
|
|
|
|
|
|
|
| ||
|
|
| CWL = 5 | tCK(AVG) | Reserved |
| ns | 4 | ||
|
|
|
|
|
|
|
|
|
| |
CL = 8 |
|
| 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 |
| ||||
|
|
|
|
|
|
|
|
|
|
|
- 27 -