隆 Semiconductor
AC Characteristics (1/3)
Parameter
Random Read or Write Cycle Time
Read Modify Write Cycle
Fast Page Mode Cycle Time
Fast Page Mode Read Modify Write Cycle Time
Access Time from
RAS
Access Time from Column Address
Access Time from
CAS
Access Time from
CAS
Precharge
Output Buffer Turn-off Delay
Transition Time (Rise and Fall)
RAS
Precharge Time
RAS
Pulse Width
RAS
Pulse Width (Fast Page Mode Only)
RAS
Hold Time
CAS
Hold Time
CAS
Pulse Width
RAS
to
CAS
Delay Time
RAS
to Column Address Delay Time
Column Address to
RAS
Lead Time
CAS
to
RAS
Precharge Time
CAS
Precharge Time (Fast Page Mode)
Row Address Set-up Time
Row Address Hold Time
Column Address Set-up Time
Column Address Hold Time
Column Address Hold Time referenced to
RAS
Read Command Set-up Time
Read Command Hold Time
Read Command Hold Time referenced to
RAS
Write Command Set-up Time
Write Command Hold Time
Write Command Hold Time referenced to
RAS
Write Command Pulse Width
Write Command to
RAS
Lead Time
Write Command to
CAS
Lead Time
Symbol
t
RC
t
RWC
t
PC
t
PRWC
t
RAC
t
AA
t
CAC
t
CPA
t
OFF
t
T
t
RP
t
RAS
t
RASP
t
RSH
t
CSH
t
CAS
t
RCD
t
RAD
t
RAL
t
CRP
t
CP
t
ASR
t
RAH
t
ASC
t
CAH
t
AR
t
RCS
t
RCH
t
RRH
t
WCS
t
WCH
t
WCR
t
WP
t
RWL
t
CWL
-50
84
135
25
72
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
0
2
30
50
50
15
45
15
15
12
25
5
6
0
8
0
8
40
0
0
0
0
8
40
8
12
12
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
50
25
15
30
12
35
鈥?/div>
10k
100k
鈥?/div>
鈥?/div>
10k
35
25
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
-60
104
140
30
76
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
0
2
40
60
60
15
45
15
15
12
30
5
10
0
10
0
10
50
0
0
0
0
10
50
10
15
15
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
60
30
15
35
15
35
鈥?/div>
10k
100k
鈥?/div>
鈥?/div>
10k
42
30
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
MSM5416282
-70
124
170
35
81
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
0
2
50
70
70
20
55
15
15
12
35
10
10
0
10
0
10
55
0
0
0
0
10
55
10
15
15
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
70
35
20
40
17
35
鈥?/div>
10k
100k
鈥?/div>
鈥?/div>
10k
50
35
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
Min. Max. Min. Max. Min. Max.
Unit Note
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
11
11
13
14
14
8, 14
8, 14
8, 15
8, 15
10
7
6/37
prev
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