Datasheet

Table 53: DDR3L-1866 Speed Bins
DDR3L-1866 Speed Bin
-10
1
Unit Notes
CL-
t
RCD-
t
RP 13-13-13
Parameter Symbol Min Max
Internal READ command to first data
t
AA 13.91 20
ACTIVATE to internal READ or WRITE delay time
t
RCD 13.91 – ns
PRECHARGE command period
t
RP 13.91 – ns
ACTIVATE-to-ACTIVATE or REFRESH command period
t
RC 47.91 – ns
ACTIVATE-to-PRECHARGE command period
t
RAS 34 9 x
t
REFI ns 2
CL = 5 CWL = 5
t
CK (AVG) 3.0 3.3 ns 3
CWL = 6, 7, 8, 9
t
CK (AVG) Reserved ns 4
CL = 6 CWL = 5
t
CK (AVG) 2.5 3.3 ns 3
CWL = 6, 7, 8, 9
t
CK (AVG) Reserved ns 4
CL = 7 CWL = 5, 7, 8, 9
t
CK (AVG) Reserved ns 4
CWL = 6
t
CK (AVG) 1.875 <2.5 ns 3
CL = 8 CWL = 5, 8, 9
t
CK (AVG) Reserved ns 4
CWL = 6
t
CK (AVG) 1.875 <2.5 ns 3
CWL = 7
t
CK (AVG) Reserved ns 4
CL = 9 CWL = 5, 6, 8, 9
t
CK (AVG) Reserved ns 4
CWL = 7
t
CK (AVG) 1.5 <1.875 ns 3
CL = 10 CWL = 5, 6, 9
t
CK (AVG) Reserved ns 4
CWL = 7
t
CK (AVG) 1.5 <1.875 ns 3
CWL = 8
t
CK (AVG) Reserved ns 4
CL = 11 CWL = 5, 6, 7
t
CK (AVG) Reserved ns 4
CWL = 8
t
CK (AVG) 1.25 <1.5 ns 3
CWL = 9
t
CK (AVG) Reserved ns 4
CL = 12 CWL = 5, 6, 7, 8
t
CK (AVG) Reserved ns 4
CWL = 9
t
CK (AVG) Reserved ns 4
CL = 13 CWL = 5, 6, 7, 8
t
CK (AVG) Reserved ns 4
CWL = 9
t
CK (AVG) 1.07 <1.25 ns 3
Supported CL settings 5, 6, 7, 8, 9, 10, 11, 13 CK
Supported CWL settings 5, 6, 7, 8, 9 CK
Notes:
1.
The -107 speed grade is backward compatible with 1600, CL = 11 (-12) , 1333, CL = 9
(-15E) and 1066, CL = 7 (-18E).
2.
t
REFI depends on T
OPER
.
3. The CL and CWL settings result in
t
CK requirements. When making a selection of
t
CK,
both CL and CWL requirement settings need to be fulfilled.
4. Reserved settings are not allowed.
8Gb: x4, x8, x16 DDR3L SDRAM
Speed Bin Tables
71
Rev 2.0 June 2016
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