DS_M390S2858CT1 Datasheet, PDF (8/12 Pages) Samsung semiconductor – SDRAM DIMM

M390S2858CT1
PC133 Registered DIMM
AC CHARACTERISTICS (AC operating conditions unless otherwise noted)
REFER TO THE INDIVIDUAL COMPONENET, NOT THE WHOLE MODULE.
Parameter
Symbol
-7C
Min
Max
-7A
Min
Max
CAS latency=3
7.5
7.5
CLK cycle time
tCC
1000
1000
CAS latency=2
7.5
10
CLK to valid
output delay
CAS latency=3
tSAC
CAS latency=2
5.4
5.4
5.4
6
Output data
hold time
CAS latency=3
tOH
CAS latency=2
3
3
3
3
CLK high pulse width
tCH
2.5
2.5
CLK low pulse width
tCL
2.5
2.5
Input setup time
tSS
1.5
1.5
Input hold time
tSH
0.8
0.8
CLK to output in Low-Z
tSLZ
1
1
CLK to output
in Hi-Z
CAS latency=3
CAS latency=2
tSHZ
5.4
5.4
5.4
6
Notes : 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.
Unit Note
ns
1
ns
1,2
ns
2
ns
3
ns
3
ns
3
ns
3
ns
2
ns
REV. 0.1 Sept. 2001