參數(shù)資料
型號: KMM377S3227BT
廠商: SAMSUNG SEMICONDUCTOR CO. LTD.
英文描述: 32Mx72 SDRAM DIMM(32M x 72 動態(tài) RAM模塊)
中文描述: 32Mx72 SDRAM的內存(32M × 72配置動態(tài)內存模塊)
文件頁數(shù): 9/12頁
文件大小: 202K
代理商: KMM377S3227BT
REV. 3 Mar. '98
Preliminary
KMM377S3227BT
SDRAM MODULE
1. Parameters depend on programmed CAS latency which is based on Reg. DIMM.
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.
4. This parameter is measured on both Register and SDRAM.
Note :
REFER TO THE INDIVIDUAL COMPONENET, NOT THE WHOLE MODULE.
Parameter
Symbol
-8
-H
-L
Unit
Note
Min
Max
Min
Max
Min
Max
CLK Cycle Time
CAS Latency=3
t
CC
8
1000
10
1000
10
1000
ns
1
CAS Latency=2
12
10
12
CLK to Valid
Output Delay
CAS Latency=3
t
SAC
6
6
6
ns
1,2
CAS Latency=2
6
6
7
Output Data
Hold Time
CAS Latency=3
t
OH
3
3
3
ns
1,2
CAS Latency=2
3
3
3
CLK High Pulse Width
t
CH
3
3
3
ns
3
CLK Low Pulse Width
t
CL
3
3
3
ns
3
Input Setup Time
t
SS
2
2
2
ns
3
Input Hold Time
t
SH
1
1
1
ns
3
CLK to Output in Low-Z
t
SLZ
1
1
1
ns
2
CLK to Output
in Hi-Z
CAS Latency=3
t
SHZ
6
6
6
ns
1
CAS Latency=2
6
6
7
AC CHARACTERISTICS
(AC Operating Conditions Unless Otherwise Noted)
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