參數(shù)資料
型號(hào): HYB39S256400DT
廠商: INFINEON TECHNOLOGIES AG
英文描述: 256 MBit Synchronous DRAM
中文描述: 256兆位同步DRAM
文件頁(yè)數(shù): 19/22頁(yè)
文件大小: 564K
代理商: HYB39S256400DT
INFINEON Technologies
19
2002-04-23
HYB39S256400/800/160DT(L)/DC(L)
256MBit Synchronous DRAM
Row Cycle Time during Auto
Refresh
t
RFC
60
63
67
70
ns
Activate(a) to Activate(b)
Command period
t
RRD
12
14
15
16
ns
5
CAS(a) to CAS(b) Command
period
t
CCD
1
1
1
1
CLK
Refresh Cycle
Refresh Period (8192 cycles)
t
REF
t
SREX
64
64
64
64
ms
Self Refresh Exit Time
1
1
1
1
CLK
Read Cycle
Data Out Hold Time
t
OH
2.5
3
3
3
ns
2,
6
Data Out to Low Impedance Time
t
LZ
t
HZ
t
DQZ
0
0
0
0
ns
Data Out to High Impedance Time
3
6
3
7
3
7
3
8
ns
DQM Data Out Disable Latency
2
2
2
2
CLK
Write Cycle
Last Data Input to Precharge
(Write without AutoPrecharge)
t
WR
12
14
15
15
ns
7
Last Data Input to Activate
(Write with AutoPrecharge)
t
DAL,min
(twr/tck) + (trp/tck)
CLK
8
DQM Write Mask Latency
t
DQW
0
0
0
0
CLK
Parameter
Symbol
Limit Values
Unit
-6
PC166-
333
-7
PC133-
222
-7.5
PC133-
333
-8
PC100-
222
min.
max.
min.
max.
min.
max.
min.
max.
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