msm514400d Oki Semiconductor, msm514400d Datasheet - Page 6

• Manufacturer Part Number: msm514400d
• Description: 1,048,576-word ? 4-bit Dynamic Ram Fast Page Mode Type
• Manufacturer: Oki Semiconductor

¡ Semiconductor
AC Characteristics (1/2)
Random Read or Write Cycle Time
Read Modify Write Cycle Time
Fast Page Mode Cycle Time
Fast Page Mode Read Modify Write
Cycle Time
Access Time from RAS
Access Time from CAS
Access Time from Column Address
Access Time from CAS Precharge
Access Time from OE
Output Low Impedance Time from CAS
CAS to Data Output Buffer Turn-off Delay Time
OE to Data Output Buffer Turn-off Delay Time
Transition Time
Refresh Period
Refresh Period (L-version)
RAS Precharge Time
RAS Pulse Width
RAS Pulse Width (Fast Page Mode)
RAS Hold Time
RAS Hold Time referenced to OE
CAS Precharge Time (Fast Page Mode)
CAS Pulse Width
CAS Hold Time
CAS to RAS Precharge Time
RAS Hold Time from CAS Precharge
RAS to CAS Delay Time
RAS to Column Address Delay Time
Row Address Set-up Time
Row Address Hold Time
Column Address Set-up Time
Column Address Hold Time
Column Address Hold Time from RAS
Column Address to RAS Lead Time
Parameter
Symbol
t
t
t
t
PRWC
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
RASP
t
RHCP
t
t
t
RWC
t
t
t
t
ROH
t
t
RAC
CAC
CPA
OEA
RAS
RSH
CAS
CSH
CRP
RCD
RAD
ASR
RAH
ASC
CAH
RAL
CLZ
OEZ
REF
REF
OFF
t
RC
PC
AA
RP
CP
AR
T
MSM514400
Min.
131
90
35
76
—
—
—
—
—
—
—
30
50
50
13
10
10
13
50
30
20
15
10
10
45
25
D/DL-50
0
0
0
3
5
0
0
(V
100,000
10,000
10,000
CC
Max.
128
—
—
—
—
50
13
25
30
13
—
13
13
50
16
—
—
—
—
—
—
—
37
25
—
—
—
—
—
—
= 5 V ±10%, Ta = 0°C to 70°C) Note 1, 2, 3, 11, 12
MSM514400
Min.
110
150
40
80
—
—
—
—
—
—
—
40
60
60
15
15
10
15
60
35
20
15
10
15
50
30
D/DL-60
0
0
0
3
5
0
0
100,000
10,000
10,000
Max.
128
—
—
—
—
60
15
30
35
15
—
15
15
50
16
—
—
—
—
—
—
—
45
30
—
—
—
—
—
—
MSM514400
Min.
130
180
45
95
—
—
—
—
—
—
—
50
70
70
20
20
10
20
70
40
20
15
10
15
55
35
D/DL-70
0
0
0
3
5
0
0
MSM514400D/DL
100,000
10,000
10,000
Max.
128
—
—
—
—
70
20
35
40
20
—
20
20
50
16
—
—
—
—
—
—
—
50
35
—
—
—
—
—
—
Unit
ms
ms
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
4, 5, 6
Note
4, 5
4, 6
6/17
4
4
4
7
7
3
5
6