參數(shù)資料
型號: HYB39S256400DCL-6
廠商: INFINEON TECHNOLOGIES AG
英文描述: 256-MBit Synchronous DRAM
中文描述: 256兆位同步DRAM
文件頁數(shù): 23/28頁
文件大?。?/td> 630K
代理商: HYB39S256400DCL-6
HYB39S256[40/80/16]0D[C/T](L)
256-MBit Synchronous DRAM
Electrical Characteristics
Data Sheet
23
Rev. 1.02, 2004-02
10072003-13LE-FGQQ
4.2
AC Characteristics
Table 15
Parameter
AC Timing - Absolute Specifications –8/-7.5/–7/-6
1)2)3)
Symbol
–8
–7.5
PC166 -
333
min. max.
–7
–6
Unit Notes
PC100 -
222
min. max.
PC166 -
222
min. max.
PC166 -
333
min. max
.
Clock and Clock Enable
Clock Cycle Time
CAS Latency = 3
CAS Latency = 2
Clock Frequency
CAS Latency = 3
CAS Latency = 2
Access Time from Clock
CAS Latency = 3
CAS Latency = 2
Clock High Pulse Width
Clock Low Pulse Width
Transition time
t
CK
8
10
7.5
10
7
7.5
6
7.5
ns
ns
t
CK
125
100
133
100
143
100
166
133
MHz
MHz
t
AC
6
6
5.4
6
5.4
5.4
5
5.4
ns
ns
3)4)5)
t
CH
t
CL
t
T
3
3
0.5
10
2.5
2.5
0.3
1.2
2.5
2.5
0.3
1.2
2
2
0.3
1.2
ns
ns
ns
Setup and Hold Times
Input Setup Time
Input Hold Time
CKE Setup Time
CKE Hold Time
Mode Register Set-up to Active
delay
Power Down Mode Entry Time
t
IS
t
IH
t
CK
t
CKH
t
RSC
2
1
2
1
2
1.5
0.8
1.5
0.8
2
1.5
0.8
1.5
0.8
2
1.5
0.8
1.5
0.8
2
ns
ns
ns
ns
CLK
6)
6)
6)
6)
t
SB
0
8
0
7.5
0
7
0
6
ns
Common Parameters
Row to Column Delay Time
Row Precharge Time
Row Active Time
Row Cycle Time
Row Cycle Time during Auto
Refresh
Activate(a) to Activate(b)
Command period
CAS(a) to CAS(b) Command
period
t
RCD
t
RP
t
RAS
t
RC
t
RFC
20
20
48
70
70
100k
20
20
45
67
67
100k
15
15
37
60
63
100k
15
15
36
60
60
100k ns
ns
ns
7)
7)
7)
ns
ns
7)
t
RRD
16
15
14
12
ns
7)
t
CCD
1
1
1
1
CLK
Refresh Cycle
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