Datasheet

T
T
T
S
S
S
6
6
6
4
4
4
M
M
M
L
L
L
S
S
S
7
7
7
2
2
2
V
V
V
6
6
6
F
F
F
168PIN PC133 Unbuffered DIMM
512MB With 32Mx8 CL3
AC CHARACTERISTICS (AC operating conditions unless otherwise noted)
Refer to the individual component, not the whole module.
Parameter Symbol Min Max Unit Note
CAS latency=3 7.5
CLK cycle time
CAS latency=2
tCC
10
1000
-
ns 1
CAS latency=3 - 5.4
CLK to valid
output delay
CAS latency=2
tSAC
- 6
ns 1, 2
CAS latency=3 3 -
Output data
hold time
CAS latency=2
tOH
3 -
ns 2
CLK high pulse width tCH 2.5 ns 3
CLK low pulse width tCL 2.5 ns 3
Input setup time tSS 1.5 ns 3
Input hold time tSH 0.8 ns 3
CLK to output in Low-Z tSLZ 1 ns 2
CAS latency=3 5.4 CLK to output in Hi-Z
CAS latency=2
tSHZ
6
ns
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.
Transcend information Inc
8