MSC23CV23257A-xxBS4 OKI electronic componets, MSC23CV23257A-xxBS4 Datasheet - Page 7

• Manufacturer Part Number: MSC23CV23257A-xxBS4
• Description: DRAM MODULE
• Manufacturer: OKI electronic componets

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AC Characteristics (1/2)
Random Read or Write Cycle Time
Fast Page Mode Cycle Time
Access Time from RAS
Access Time from CAS
Access Time from Column Address
Access Time from CAS Precharge
Output Low Impedance Time from CAS
Output Hold Time from CAS Low
CAS to Data Output Buffer Turn-off Delay Time
RAS to Data Output Buffer Turn-off Delay Time
WE to Data Output Buffer Turn-off Delay Time
Transition Time
Refresh Period
RAS Precharge Time
RAS Pulse Width
RAS Pulse Width (Fast Page Mode)
RAS Hold Time
CAS Precharge Time
CAS Pulse Width
RAS Low to CAS High Delay Time
CAS High to RAS Low Delay Time
RAS Hold Time from CAS Precharge
RAS to CAS Delay Time
RAS to Column Address Delay Time
RAS to Second CAS 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
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
RHCP
RSCD
t
t
t
t
t
RASP
t
t
DOH
WEZ
t
t
t
HPC
RAC
RAS
RSH
CSH
CRP
RCD
RAD
ASR
RAH
CAH
CAC
CPA
CLZ
CEZ
REZ
REF
CAS
ASC
RAL
RC
AA
t
RP
CP
AR
T
MSC23CV23257A
Min.
110
(V
25
—
—
—
—
—
40
60
60
15
10
10
40
35
20
15
60
10
15
40
30
0
5
0
0
0
3
5
0
0
CC
-60BS4
= 3.3 V ±0.3 V, Ta = 0°C to 70°C)
Max.
100k
10k
10k
—
—
60
15
30
35
—
—
15
15
15
50
32
—
—
—
—
—
—
45
30
—
—
—
—
—
—
—
MSC23CV23257A
Min.
130
30
—
—
—
—
—
50
70
70
20
10
10
45
40
20
15
70
10
15
45
35
0
5
0
0
0
3
5
0
0
MSC23CV23257A-xxBS4
-70BS4
Max.
100k
10k
10k
—
—
70
20
35
40
—
—
15
15
15
50
32
—
—
—
—
—
—
50
35
—
—
—
—
—
—
—
Note 1,2,3,10,11
Unit
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
4, 5, 6
Note
4, 5
4, 6
7, 8
7, 8
4
4
7
3
5
6
321