參數(shù)資料
型號: HYB514175BJ-50
廠商: SIEMENS A G
元件分類: DRAM
英文描述: 256k x 16-Bit EDO-DRAM
中文描述: 256K X 16 EDO DRAM, 50 ns, PDSO40
封裝: 0.400 INCH, PLASTIC, SOJ-40
文件頁數(shù): 7/22頁
文件大?。?/td> 177K
代理商: HYB514175BJ-50
HYB 514175BJ-50/-55/-60
256k
×
16 EDO-DRAM
Semiconductor Group
7
1998-10-01
RAS hold time
t
RSH
t
CSH
t
CRP
t
T
t
REF
13
13
15
ns
CAS hold time
40
45
50
ns
CAS to RAS precharge time
5
5
5
ns
Transition time (rise and fall)
1
50
1
50
1
50
ns
7
Refresh period
16
16
16
ms
Read Cycle
Access time from RAS
t
RAC
t
CAC
t
AA
t
OEA
t
RAL
t
RCS
t
RCH
50
55
60
ns
8, 9
Access time from CAS
13
13
15
ns
8, 9
Access time from column address
25
25
30
ns
8, 10
OE access time
13
13
15
ns
Column address to RAS lead time
25
25
30
ns
Read command setup time
0
0
0
ns
Read command hold time
Read command hold time ref. to RAS
t
RRH
CAS to output in low-Z
Output buffer turn-off delay from CAS
t
OFF
Output buffer turn-off delay from OE
0
0
0
ns
11
0
0
0
ns
11
t
CLZ
0
0
0
ns
8
0
13
0
13
0
15
ns
12
t
OEZ
t
DZO
t
CDD
t
ODD
0
13
0
13
0
15
ns
12
Data to OE low delay
0
0
0
ns
13
CAS high to data delay
10
10
13
ns
14
OE high to data delay
10
10
13
ns
14
Write Cycle
Write command hold time
t
WCH
t
WP
t
WCS
t
RWL
t
CWL
t
DS
t
DH
t
DZC
8
8
10
ns
Write command pulse width
8
8
10
ns
Write command setup time
0
0
0
ns
15
Write command to RAS lead time
13
13
15
ns
Write command to CAS lead time
13
13
15
ns
Data setup time
0
0
0
ns
16
Data hold time
8
8
10
ns
16
Data to CAS low delay
0
0
0
ns
13
AC Characteristics
(cont’d)5, 6
T
A
= 0 to 70
°
C;
V
SS
= 0 V;
V
CC
= 5 V
±
10 %,
t
T
= 2 ns
Parameter
Symbol
Limit Values
Unit Note
-50
-55
-60
min. max. min. max. min. max.
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