HY514400B Datasheet, PDF (6/8 Pages) List of Unclassifed Manufacturers – 1Mx4, Fast Page mode

HY514400B
AC CHARACTERISTICS
(TA = 0 °C to 70 °C, VCC = 5V ± 10% , VSS = 0V, unless otherwise noted.)
Symbol
Parameter
50ns
Min Max
tRC
Random read or write cycle time
90
-
tRWC
Read-modify-write cycle time
130 -
tPC
Fast Page mode cycle time
35
-
tPRWC Fast Page mode read-modify-write cycle time
75
-
tRAC
Access time from /RAS
-
50
tCAC
Access time from /CAS
-
15
tAA
Access time from column address
-
25
tCPA
Access time from /CAS precharge
-
30
tCLZ
/CAS to output low impedance
0
-
tT
Transition time(rise and fall)
3 50
tRP
/RAS precharge time
30
-
tRAS
/RAS pulse width
50 10K
tRASP /RAS pulse width(FP mode)
50 200K
tRSH
/RAS hold time
15
-
tCSH
/CAS hold time
50
-
tCAS
/CAS pulse width
15 10K
tRCD
/RAS to /CAS delay time
15 35
tRAD
/RAS to column address delay time
10 25
tCRP
/CAS to /RAS precharge time
5
-
tCP
/CAS precharge time
10
-
tASR
Row address set-up time
0
-
tRAH
Row address hold time
8
-
tASC
Column address set-up time
0
-
tCAH
Column address hold time
15
-
tAR
Column address hold time from /CAS
40
-
tRAL
Column address to /RAS lead time
25
-
tRCS
Read command set-up time
0
-
tRCH
Read command hold time referenced to /CAS
0
-
tRRH
Read command hold time referenced to /RAS
0
-
tWCH
Write command hold time
10
-
tWCR
Write command hold time from /RAS
40
-
tWP
Write command pulse width
10
-
tRWL
Write command to /RAS lead time
15
-
60ns
Min Max
110 -
155 -
40
-
80
-
-
60
-
15
-
30
-
35
0
-
3 50
40
-
60 10K
60 200K
15
-
60
-
15 10K
20 45
15 30
5
-
10
-
0
-
10
-
0
-
15
-
50
-
30
-
0
-
0
-
0
-
10
-
45
-
10
-
15
-
70ns
Unit
Min Max
130 -
ns
185 -
ns
45
-
ns
95
-
ns
-
70 ns
-
20 ns
-
35 ns
-
40 ns
0
-
ns
3 50 ns
50
-
ns
70 10K ns
70 200K ns
20
-
ns
70
-
ns
20 10K ns
20 50 ns
15 35 ns
5
-
ns
10
-
ns
0
-
ns
10
-
ns
0
-
ns
15
-
ns
55
-
ns
35
-
ns
0
-
ns
0
-
ns
0
-
ns
15
-
ns
55
-
ns
15
-
ns
20
-
ns
Note
4,9,10
4,9
4,10
4,15
4
3
9
10
15
17
14
14
14
6,14
6
14
1Mx4,FP DRAM
Rev.10 / Jan.97
6