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MSM514100DL-50 Datasheet PDF : 17 Pages
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MSM514100D/DL
AC Characteristics (1/2)
(VCC = 5 V ±10%, Ta = 0°C to 70°C) Note 1, 2, 3, 11, 12
Parameter
MSM514100 MSM514100 MSM514100
Symbol D/DL-50
D/DL-60
D/DL-70 Unit Note
Min. Max. Min. Max. Min. Max.
Random Read or Write Cycle Time
Read Modify Write Cycle Time
Fast Page Mode Cycle Time
Fast Page Mode Read Modify Write
Cycle Time
tRC 90 — 110 — 130 — ns
tRWC 108 — 130 — 155 — ns
tPC 35 — 40 — 45 — ns
tPRWC 53 — 60 — 70 — 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
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
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
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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