EDJ1108BABG, EDJ1116BABG
-AC, -AE, -AG
1066
-8A, -8C
800
Data rate (Mbps)
Parameter
Symbol
min.
max.
min.
max.
Unit
ps
Notes
DQS, /DQS rising edge output access
time from rising CK, /CK
DQS latching rising transitions to
associated clock edges
DQS falling edge hold time from rising
CK
DQS falling edge setup time to rising
CK
12, 13,
37
tDQSCK
−300
−0.25
0.2
+300
−400
+400
tDQSS
tDSH
tDSS
0.25
−0.25
0.2
0.25
tCK (avg) 24
tCK (avg) 24, 36
tCK (avg) 24, 36
0.2
0.2
DQS input high pulse width
DQS input low pulse width
tDQSH
tDQSL
0.45
0.45
0.55
0.55
0.45
0.45
0.55
0.55
tCK (avg) 34, 35
tCK (avg) 33, 35
12, 13,
tCK (avg)
38
12, 13,
tCK (avg)
38
DQS output high time
DQS output low time
tQSH
tQSL
0.38
0.38
0.38
4
0.38
4
Mode register set command cycle time tMRD
nCK
Mode register set command update
tMOD
15
15
12
0.9
ns
27
27
1, 19,
38
11, 12,
13, 38
delay
tMOD
12
nCK
Read preamble
Read postamble
tRPRE
tRPST
0.9
tCK (avg)
0.3
0.3
tCK (avg)
Write preamble
tWPRE
tWPST
tWR
0.9
0.3
15
0.9
0.3
15
tCK (avg)
tCK (avg)
ns
1
Write postamble
Write recovery time
1
26
Auto precharge write recovery +
precharge time
Multi-Purpose register recovery time
Read to write command delay
(BC4MRS, BC4OTF)
WR + RU
WR + RU
tDAL
nCK
nCK
(tRP/tCK (avg))
(tRP/tCK (avg))
tMPRR
tRTW
1
1
29
RL + tCCD/2 +
2nCK − WL
RL + tCCD/2 +
2nCK − WL
RL + tCCD +
2nCK − WL
RL + tCCD +
2nCK − WL
(BL8MRS, BL8OTF)
tRTW
18, 26,
27
18, 26,
27
Internal write to read command delay tWTR
tWTR
7.5
7.5
ns
4
4
nCK
Internal read to precharge command
tRTP
7.5
7.5
ns
26, 27
26, 27
28
delay
tRTP
4
4
nCK
Active to READ with auto precharge
command delay
tRAP
tRCD min
tRCD min
Minimum CKE low width for self-
refresh entry to exit timing
tCKE (min.)
+1nCK
tCKE (min.)
+1nCK
tCKESR
Valid clock requirement after self-
tCKSRE
tCKSRE
tCKSRX
tCKSRX
tXS
10
5
10
5
ns
27
27
27
27
27
27
refresh entry or power-down entry
nCK
ns
Valid clock requirement before self-
refresh exit or power-down exit
10
10
5
5
nCK
ns
Exit self-refresh to commands not
requiring a locked DLL
tRFC (min.) +
10
5
tRFC (min.) +
10
5
tXS
nCK
Data Sheet E1248E40 (Ver. 4.0)
55
ELPIDA [ ELPIDA MEMORY ]
