M368L1624FTM Datasheet, PDF (16/25 Pages) Sanken electric – 184pin Unbuffered Module based on 256Mb F-die with 64/72-bit Non-ECC / ECC

256MB, 512MB Unbuffered DIMM
DDR SDRAM
Parameter
Mode register set cycle time
DQ & DM setup time to DQS
DQ & DM hold time to DQS
Control & Address input pulse width
DQ & DM input pulse width
Power down exit time
Exit self refresh to non-Read command
Exit self refresh to read command
Refresh interval time
Output DQS valid window
Clock half period
Data hold skew factor
DQS write postamble time
Active to Read with Auto precharge
command
Autoprecharge write recovery +
Precharge time
B3
AA
A2
B0
Symbol ^{(DDR333@CL=2.5)) (DDR266@CL=2.0) (DDR266@CL=2.0) (DDR266@CL=2.5))} Unit
Min
Max
Min
Max
Min
Max
tMRD
12
15
15
15
ns
tDS
0.45
0.5
0.5
0.5
ns
tDH
0.45
0.5
0.5
0.5
ns
tIPW
2.2
2.2
2.2
2.2
ns
tDIPW
1.75
1.75
1.75
1.75
ns
tPDEX
6
7.5
7.5
7.5
ns
tXSNR
75
75
75
75
ns
tXSRD
200
200
200
200
tCK
tREFI
7.8
7.8
7.8
7.8
us
tQH
tHP
-tQHS
-
tHP
-tQHS
-
tHP
-tQHS
-
tHP
-tQHS
-
ns
tHP
tCLmin
or tCHmin
-
tCLmin
or tCHmin
-
tCLmin
or tCHmin
-
tCLmin
or tCHmin
-
ns
tQHS
0.55
0.75
0.75
0.75
ns
tWPST
0.4
0.6
0.4
0.6
0.4
0.6
0.4
0.6
tCK
Note
j, k
j, k
8
8
4
11
10, 11
11
2
tRAP
18
20
20
20
(tWR/tCK)
tDAL
+
(tRP/tCK)
(tWR/tCK)
+
(tRP/tCK)
(tWR/tCK)
+
(tRP/tCK)
(tWR/tCK)
+
(tRP/tCK)
tCK
13
System Characteristics for DDR SDRAM
The following specification parameters are required in systems using DDR333& DDR266 devices to ensure proper system
performance. these characteristics are for system simulation purposes and are guaranteed by design.
Table 1 : Input Slew Rate for DQ, DQS, and DM
AC CHARACTERISTICS
PARAMETER
SYMBOL
DQ/DM/DQS input slew rate measured between
VIH(DC), VIL(DC) and VIL(DC), VIH(DC)
DCSLEW
DDR333
MIN
MAX
TBD
TBD
DDR266
MIN
MAX
TBD
TBD
Units
V/ns
Notes
a, m
Table 2 : Input Setup & Hold Time Derating for Slew Rate
Input Slew Rate
tIS
tIH
Units
0.5 V/ns
0
0
ps
0.4 V/ns
+50
0
ps
0.3 V/ns
+100
0
ps
Notes
i
i
i
Table 3 : Input/Output Setup & Hold Time Derating for Slew Rate
Input Slew Rate
tDS
tDH
Units
0.5 V/ns
0
0
ps
0.4 V/ns
+75
+75
ps
0.3 V/ns
+150
+150
ps
Notes
k
k
k
Rev. 1.2 May, 2004