m464s3254hus Samsung Semiconductor, Inc., m464s3254hus Datasheet - Page 12

• Manufacturer Part Number: m464s3254hus
• Description: Sdram Unbuffered Sodimm
• Manufacturer: Samsung Semiconductor, Inc.

14.0 AC CHARACTERISTICS
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.
REFER TO THE INDIVIDUAL COMPONENET, NOT THE WHOLE MODULE.
256MB, 512MB Unbuffered SODIMM
CLK cycle
time
CLK to valid
output delay
Output data
hold time
CLK high pulse width
CLK low pulse width
Input setup time
Input hold time
CLK to output in Low-Z
CLK to output
in Hi-Z
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.
Parameter
CAS latency=3
CAS latency=2
CAS latency=3
CAS latency=2
CAS latency=3
CAS latency=2
CAS latency=3
CAS latency=2
Symbol
t
t
t
t
t
t
SAC
t
t
t
SHZ
SLZ
CC
OH
CH
CL
SS
SH
Min
7.5
2.5
2.5
1.5
0.8
10
3
3
1
7A
(AC operating conditions unless otherwise noted)
1000
Max
5.4
5.4
6
6
Rev. 1.0 November 2005
Unit
ns
ns
ns
ns
ns
ns
ns
ns
ns
SDRAM
Note
1,2
1
2
3
3
3
3
2