DS_K4S161622D Datasheet, PDF (8/43 Pages) Samsung semiconductor – 1M x 16 SDRAM

K4S161622D-TI/E
Parameter
Symbol
-50
CLK cycle time
tCC(min)
5
Row active to row active delay tRRD(min)
10
RAS to CAS delay
tRCD(min)
15
Row precharge time
tRP(min)
15
Row active time
tRAS(min)
40
tRAS(max)
Row cycle time
tRC(min)
55
-55
5.5
11
16.5
16.5
38.5
55
Version
-60
-70
6
7
12
14
18
20
18
20
42
49
100
60
69
2. Minimum delay is required to complete write.
3. All parts allow every cycle column address change.
4. In case of row precharge interrupt, auto precharge and read burst stop.
5. Also, supported tRDL=2CLK for - 60 part which is distinguished by bucket code "J".
From the next generation, tRDL will be only 2CLK for every clock frequency.
CMOS SDRAM
Unit
-80
-10
8
10
ns
16
20
ns
20
20
ns
20
20
ns
48
48
ns
us
70
70
ns
AC CHARACTERISTICS (AC operating conditions unless otherwise noted)
Parameter
-50
-55
-60
-70
-80
-10
Symbol
Unit Note
Min Max Min Max Min Max Min Max Min Max Min Max
CAS Latency=3
CLK cycle time
tCC
CAS Latency=2
5
5.5
6
7
8
10
1000
1000
1000
1000
1000
1000 ns 1
10
-
-
10
10
12
CLK to valid
output delay
CAS Latency=3
tSAC
CAS Latency=2
- 4.5 -
-6-
5
6
- 5.5 - 5.5 -
-6-6-
6
6
-6
ns 1, 2
-8
Output data
tOH
2
-
2
- 2.5 - 2.5 - 2.5 - 2.5 - ns 2
CLK high pulse ^{CAS Latency=3}
width
CAS Latency=2
tCH
2
3
-
2
3
2.5
-
-
3
3
-
3
- 3.5 - ns 3
CLK low pulse ^{CAS Latency=3}
width
CAS Latency=2
tCL
2
2
2.5
-
-
- 3 - 3 - 3.5 - ns 3
3
3
3
CAS Latency=3
1.5
1.5
1.5
1.75
Input setup time
tSS
-
-
-
- 2 - 2.5 - ns 3
CAS Latency=2
2
2
2
2
Input hold time
tSH
1 - 1 - 1 - 1 - 1 - 1 - ns 3
CLK to output in Low-Z
tSLZ
1
-
1
-
1
-
1
-
1
-
1
- ns 2
CLK to output
in Hi-Z
CAS Latency=3
CAS Latency=2
tSHZ
- 4.5 -
-6-
5
6
- 5.5 - 5.5 - 6
-6-6-6
-
-
6
ns
8
Note : 1. Parameters depend on programmed CAS latency.
2. If clock rising time is longer than 1ns, (tr/2-0.5)ns should be added to the parameter.
3. Assumed input rise and fall time (tr & tf)=1ns.
If tr & tf is longer than 1ns, transient time compensation should be considered,
i.e., [(tr + tf)/2-1]ns should be added to the parameter.
Rev 1.2 Jan '03