MSM514400D Просмотр технического описания (PDF) - Oki Electric Industry
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MSM514400D Datasheet PDF : 17 Pages
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MSM514400D/DL
AC Characteristics (1/2)
(VCC = 5 V ±10%, Ta = 0°C to 70°C) Note 1, 2, 3, 11, 12
Parameter
MSM514400 MSM514400 MSM514400
Symbol D/DL-50
D/DL-60
D/DL-70 Unit Note
Min. Max. Min. Max. Min. Max.
Random Read or Write Cycle Time
tRC 90 — 110 — 130 — ns
Read Modify Write Cycle Time
tRWC 131 — 150 — 180 — ns
Fast Page Mode Cycle Time
tPC 35 — 40 — 45 — ns
Fast Page Mode Read Modify Write
Cycle Time
tPRWC 76 — 80 — 95 — ns
Access Time from RAS
Access Time from CAS
tRAC — 50 — 60 — 70 ns 4, 5, 6
tCAC — 13 — 15 — 20 ns 4, 5
Access Time from Column Address
tAA — 25 — 30 — 35 ns 4, 6
Access Time from CAS Precharge
tCPA — 30 — 35 — 40 ns 4
Access Time from OE
tOEA — 13 — 15 — 20 ns 4
Output Low Impedance Time from CAS
tCLZ
0
—
0
—
0
— ns 4
CAS to Data Output Buffer Turn-off Delay Time tOFF 0
13
0
15
0
20 ns 7
OE to Data Output Buffer Turn-off Delay Time tOEZ 0
13
0
15
0
20 ns 7
Transition Time
tT
3
50
3
50
3
50 ns 3
Refresh Period
tREF — 16 — 16 — 16 ms
Refresh Period (L-version)
tREF — 128 — 128 — 128 ms
RAS Precharge Time
tRP 30 — 40 — 50 — ns
RAS Pulse Width
tRAS 50 10,000 60 10,000 70 10,000 ns
RAS Pulse Width (Fast Page Mode)
tRASP 50 100,000 60 100,000 70 100,000 ns
RAS Hold Time
tRSH 13 — 15 — 20 — ns
RAS Hold Time referenced to OE
tROH 10 — 15 — 20 — ns
CAS Precharge Time (Fast Page Mode)
tCP 10 — 10 — 10 — ns
CAS Pulse Width
tCAS 13 10,000 15 10,000 20 10,000 ns
CAS Hold Time
tCSH 50 — 60 — 70 — ns
CAS to RAS Precharge Time
tCRP
5
—
5
—
5
— ns
RAS Hold Time from CAS Precharge
tRHCP 30 — 35 — 40 — ns
RAS to CAS Delay Time
tRCD 20 37 20 45 20 50 ns 5
RAS to Column Address Delay Time
tRAD 15 25 15 30 15 35 ns 6
Row Address Set-up Time
tASR
0
—
0
—
0
— ns
Row Address Hold Time
tRAH 10 — 10 — 10 — ns
Column Address Set-up Time
tASC
0
—
0
—
0
— ns
Column Address Hold Time
Column Address Hold Time from RAS
Column Address to RAS Lead Time
tCAH 10 — 15 — 15 — ns
tAR 45 — 50 — 55 — ns
tRAL 25 — 30 — 35 — ns
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