MSM51V4400E Просмотр технического описания (PDF) - Oki Electric Industry
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MSM51V4400E Datasheet PDF : 14 Pages
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FEDD51V4400E-01
MSM51V4400E
AC Characteristic (1/2)
(Vcc = 3.3V ± 0.3V, Ta = − 10°C to 70°C) Note1,2,3,11,12
Parameter
Symbol
Random Read or Write Cycle Time
Read Modify Write Cycle Time
Fast Page Mode Cycle Time
tRC
tRWC
tPC
Fast Page Mode Read Modify Write
Cycle Time
tPRWC
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
tRAC
tCAC
tAA
tCPA
tOEA
tCLZ
CAS to Data Output Buffer Turn-off
Delay Time
tOFF
MSM51V4400
E-70
Min.
130
185
45
Max.
100
70
20
35
40
20
0
0
20
MSM51V4400
E-10
Min.
180
240
60
Max.
120
100
25
50
55
25
0
0
25
unit Note
ns
ns
ns
ns
ns 4, 5, 6
ns 4, 5
ns 4, 6
ns
4
ns
4
ns
4
ns
7
OE to Data Output Buffer Turn-off Delay
Time
tOEZ
0
20
0
25
ns
7
Transition Time
tT
3
50
3
50
ns
3
Refresh Period
tREF
16
16
ns
RAS Precharge Time
tRP
50
70
ns
RAS Pulse Width
tRAS
70 10,000 100 10,000 ns
RAS Pulse Width (Fast Page Mode)
tRASP
70 100,000 100 100,000 ns
RAS Hold Time
tRSH
20
25
ns
RAS Hold Time referenced to OE
tROH
20
25
ns
CAS Precharge Time
(Fast Page Mode)
tCP
10
10
ns
CAS Pulse Width
tCAS
20
10,000
25
10,000 ns
CAS Hold Time
tCSH
70
100
ns
CAS to RAS Precharge Time
tCRP
5
5
ns
RAS Hold Time from CAS Precharge tRHCP
40
50
ns
RAS to CAS Delay Time
tRCD
20
50
25
75
ns
5
RAS to Column Address Delay Time
tRAD
15
35
20
50
ns
6
Row Address Set-up Time
tASR
0
0
ns
Row Address Hold Time
tRAH
10
15
ns
Column Address Set-up Time
tASC
0
0
ns
6/14
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