DDR4-2400 Speed Bins and Operations
Speed Bin
DDR4-2400T
17-17-17
CL-nRCD-nRP
Unit
NOTE
Parameter
Symbol
min
max
14.16
(13.75)5,12
Internal read command to first data
tAA
18.00
ns
ns
ns
12
12
12
Internal read command to first data
with read DBI enabled
tAA_DBI
tRCD
tAA(min) + 3nCK
tAA(max) + 3nCK
-
14.16
(13.75)5,12
ACT to internal read or write delay
time
14.16
(13.75)5,12
PRE command period
tRP
tRAS
tRC
-
ns
ns
ns
12
12
12
ACT to PRE command period
32
9 x tREFI
-
46.16
(45.75)5,12
ACT to ACT or REF command
period
Normal
CL = 9
Read DBI
CL = 11
(Optional)5
1,2,3,4,11
Reserved
Reserved
ns
CWL = 9
tCK(AVG)
CL = 10
CL = 10
CL = 11
CL = 12
CL = 12
CL = 13
CL = 14
CL = 14
CL = 15
CL = 16
CL = 15
CL = 16
CL = 17
CL = 18
CL = 12
CL = 12
CL = 13
CL = 14
CL = 14
CL = 15
CL = 16
CL = 17
CL = 18
CL = 19
CL = 18
CL = 19
CL = 20
CL = 21
1.5
1.6
ns 1,2,3,4,11
tCK(AVG)
tCK(AVG)
tCK(AVG)
tCK(AVG)
tCK(AVG)
tCK(AVG)
tCK(AVG)
tCK(AVG)
tCK(AVG)
tCK(AVG)
tCK(AVG)
tCK(AVG)
tCK(AVG)
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
4
CWL = 9,11
1.25
1.25
<1.5
<1.5
1,2,3,4,8
1,2,3,8
4
Reserved
Reserved
CWL =
10,12
1.071
1.071
<1.25
<1.25
1,2,3,4,8
1,2,3,8
4
CWL =
11,14
0.937
0.937
<1.071
<1.071
1,2,3,4,8
1,2,3,8
1,2,3,4
1,2,3,4
Reserved
Reserved
CWL =
12,16
0.833
0.833
<0.937
<0.937
ns
1,2,3
13
Supported CL Settings
10,11,12,13,14,15,16,17,18
12,13,14,15,16,18,19,20,21
9,10,11,12,14,16
nCK
nCK
nCK
Supported CL Settings with read DBI
Supported CWL Settings
Rev. 1.0 / Oct.2020
37