Hynix HMT41GR7AFR4C-RDT4 User Manual
Rev. 1.0 / Jun. 2013
47
DDR3-1866 Speed Bins
Speed Bin
DDR3-1866M
Unit
Note
CL - nRCD - nRP
13-13-13
Parameter
Symbol
min
max
Internal read command
to first data
t
AA
13.91
(13.125)
5,11
20
ns
ACT to internal read or
write delay time
t
RCD
13.91
(13.125)
5,11
—
ns
PRE command period
t
RP
13.91
(13.125)
5,11
—
ns
ACT to PRE command
period
t
RAS
34
9 * tREFI
ns
ACT to ACT or PRE
command period
t
RC
47.91
(47.125)
5,11
-
ns
CL = 6
CWL = 5
t
CK(AVG)
2.5
3.3
ns
1,2,3,9
CWL = 6
t
CK(AVG)
Reserved
ns
1,2,3,4,9
CWL = 7,8,9
t
CK(AVG)
Reserved
ns
4
CL = 7
CWL = 5
t
CK(AVG)
Reserved
ns
4
CWL = 6
t
CK(AVG)
1.875
< 2.5
ns
1,2,3,4,9
CWL = 7,8,9
t
CK(AVG)
Reserved
ns
4
CL = 8
CWL = 5
t
CK(AVG)
Reserved
ns
4
CWL = 6
t
CK(AVG)
1.875
< 2.5
ns
1,2,3,9
CWL = 7
t
CK(AVG)
Reserved
ns
1,2,3,4,9
CWL = 8,9
t
CK(AVG)
Reserved
ns
4
CL = 9
CWL = 5, 6
t
CK(AVG)
Reserved
ns
4
CWL = 7
t
CK(AVG)
1.5
<1.875
ns
1,2,3,4,9
CWL = 8
t
CK(AVG)
Reserved
ns
1,2,3,4,9
CWL = 9
t
CK(AVG)
Reserved
ns
4
CL = 10
CWL = 5, 6
t
CK(AVG)
Reserved
ns
4
CWL = 7
t
CK(AVG)
1.5
<1.875
ns
1,2,3,9
CWL = 8
t
CK(AVG)
Reserved
ns
1,2,3,4,9
CL = 11
CWL = 5,6,7
t
CK(AVG)
Reserved
ns
4
CWL = 8
t
CK(AVG)
1.25
<1.5
ns
1,2,3,4,9
CWL = 9
t
CK(AVG)
Reserved
ns
1,2,3,4
CL = 12
CWL = 5,6,7,8
t
CK(AVG)
Reserved
ns
4
CWL = 9
t
CK(AVG)
Reserved
ns
1,2,3,4
CL = 13
CWL = 5,6,7,8
t
CK(AVG)
Reserved
ns
4
CWL = 9
t
CK(AVG)
1.07
<1.25
ns
1, 2, 3
Supported CL Settings
6, 7, 8, 9, 10, 11, 13
n
CK
Supported CWL Settings
5, 6, 7, 8, 9
n
CK