Hynix HMT42GR7BFR4C-RDT8 User Manual
Rev. 1.0 / May. 2014
45
DDR3-1333 Speed Bins
Speed Bin
DDR3-1333H
Unit
Note
CL - nRCD - nRP
9-9-9
Parameter
Symbol
min
max
Internal read
command to first data
t
AA
13.5
(13.125)
5,10
20
ns
ACT to internal read or
write delay time
t
RCD
13.5
(13.125)
5,10
—
ns
PRE command period
t
RP
13.5
(13.125)
5,10
—
ns
ACT to ACT or REF
command period
t
RC
49.5
(49.125)
5,10
—
ns
ACT to PRE command
period
t
RAS
36
9 * tREFI
ns
CL = 6
CWL = 5
t
CK(AVG)
2.5
3.3
ns
1,2,3,7
CWL = 6
t
CK(AVG)
Reserved
ns
1,2,3,4,7
CWL = 7
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
1,2,3,4,7
(Optional)
5,10
CWL = 7
t
CK(AVG)
Reserved
ns
1,2,3,4
CL = 8
CWL = 5
t
CK(AVG)
Reserved
ns
4
CWL = 6
t
CK(AVG)
1.875
< 2.5
ns
1,2,3,7
CWL = 7
t
CK(AVG)
Reserved
ns
1,2,3,4
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
CL = 10
CWL = 5, 6
t
CK(AVG)
Reserved
ns
4
CWL = 7
t
CK(AVG)
1.5
<1.875
ns
1,2,3
(Optional)
ns
5
Supported CL Settings
6, 7, 8, 9, 10
n
CK
Supported CWL Settings
5, 6, 7
n
CK