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MSM514900C-70JS Datasheet PDF : 16 Pages
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MSM514900C/CSL
AC Characteristics (1/2)
(VCC = 5 V ±10%, Ta = 0°C to 70°C) Note 1, 2, 3
Parameter
MSM514900 MSM514900 MSM514900
Symbol C/CSL-60 C/CSL-70 C/CSL-80 Unit Note
Min. Max. Min. Max. Min. Max.
Random Read or Write Cycle Time
tRC 110 — 130 — 150 — ns
Read Modify Write Cycle Time
tRWC 155 — 185 — 205 — ns
Fast Page Mode Cycle Time
tPC 40 — 45 — 50 — ns
Fast Page Mode Read Modify Write
Cycle Time
tPRWC 85 — 100 — 105 — ns
Access Time from RAS
Access Time from CAS
tRAC — 60 — 70 — 80 ns 4, 5, 6
tCAC — 20 — 20 — 20 ns 4, 5
Access Time from Column Address
Access Time from CAS Precharge
tAA — 30 — 35 — 40 ns 4, 6
tCPA — 35 — 40 — 45 ns 4
Access Time from OE
tOEA — 20 — 20 — 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
15
0
20
0
20 ns 7
OE to Data Output Buffer Turn-off Delay Time tOEZ 0
15
0
20
0
20 ns 7
Transition Time
tT
3
50
3
50
3
50 ns 3
Refresh Period
tREF — 16 — 16 — 16 ms
Refresh Period (SL version)
RAS Precharge Time
RAS Pulse Width
RAS Pulse Width (Fast Page Mode)
tREF — 128 — 128 — 128 ms 11
tRP 40 — 50 — 60 — ns
tRAS 60 10,000 70 10,000 80 10,000 ns
tRASP 60 100,000 70 100,000 80 100,000 ns
RAS Hold Time
RAS Hold Time referenced to OE
tRSH 15 — 20 — 20 — ns
tROH 15 — 20 — 20 — ns
CAS Precharge Time (Fast Page Mode)
tCP 10 — 10 — 10 — ns
CAS Pulse Width
tCAS 20 10,000 20 10,000 20 10,000 ns
CAS Hold Time
CAS to RAS Precharge Time
RAS Hold Time from CAS Precharge
RAS to CAS Delay Time
RAS to Column Address Delay Time
tCSH 60 — 70 — 80 — ns
tCRP 10 — 10 — 10 — ns
tRHCP 35
—
40
—
45
— ns
tRCD 20 40 20 50 20 60 ns 5
tRAD 15 30 15 35 15 40 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 15 — 15 — 15 — ns
tAR 50 — 55 — 60 — ns
tRAL 30
—
35
—
40
— ns
Read Command Set-up Time
tRCS
0
—
0
—
0
— ns
Read Command Hold Time
tRCH
0
—
0
—
0
— ns 8
Read Command Hold Time referenced to RAS tRRH 0
—
0
—
0
— ns 8
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