msm548262 Oki Semiconductor, msm548262 Datasheet - Page 6

• Manufacturer Part Number: msm548262
• Description: 262,144-word 8-bit Multiport Dram
• Manufacturer: Oki Semiconductor

¡ Semiconductor
AC Characteristics (1/3)
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
Data Set-up Time
Data Hold Time
Data Hold Time referenced to RAS
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
t
t
t
t
t
RASP
t
t
RWC
WCH
WCR
t
t
t
t
t
RSH
RAD
t
RAH
t
RCH
RRH
WCS
RWL
CWL
t
DHR
RAC
CAC
CPA
RAS
CSH
CAS
RCD
RAL
CRP
ASR
ASC
CAH
RCS
OFF
WP
t
DS
DH
RC
PC
AA
RP
CP
AR
T
Min.
120
170
40
85
—
—
—
—
50
60
60
15
60
15
20
15
30
10
10
10
10
50
10
50
10
15
15
10
50
0
3
0
0
0
0
0
0
0
-60
Max.
100k
10k
10k
—
—
—
—
60
30
15
35
15
35
—
—
—
45
30
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
Min.
140
185
45
90
—
—
—
—
60
70
70
20
70
20
20
15
35
10
10
10
10
55
12
55
12
20
20
12
55
0
3
0
0
0
0
0
0
0
-70
Max.
100k
10k
10k
—
—
—
—
70
35
20
40
20
35
—
—
—
50
35
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
Min.
150
195
50
90
—
—
—
—
60
80
80
25
80
25
20
15
40
10
10
10
12
55
15
55
15
20
20
15
55
0
3
0
0
0
0
0
0
0
-80
Max.
100k
10k
10k
—
—
—
—
80
40
25
45
20
35
—
—
—
55
40
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
MSM548262
Unit
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
ns
ns
ns
Note
6/37
8, 14
8, 14
8, 15
8, 15
10
14
14
11
11
13
12
12
7