MSM5118165B Datasheet, PDF (6/16 Pages) OKI electronic componets – 1,048,576-Word x 16-Bit DYNAMIC RAM : FAST PAGE MODE TYPE WITH EDO

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MSM5118165B
AC Characteristics (1/2)
(V_CC = 5 V ±10%, Ta = 0°C to 70°C) Note 1, 2, 3
Parameter
MSM5118165 MSM5118165 MSM5118165
Symbol ^B-50
B-60
B-70
Unit Note
Min. Max. Min. Max. Min. Max.
Random Read or Write Cycle Time
t_RC 84 — 104 — 124 — ns
Read Modify Write Cycle Time
t_RWC 110 — 135 — 160 — ns
Fast Page Mode Cycle Time
t_HPC 20 — 25 — 30 — ns
Fast Page Mode Read Modify Write
Cycle Time
t_HPRWC 58
—
68
—
78
— ns
Access Time from RAS
Access Time from CAS
t_RAC — 50 — 60 — 70 ns 4, 5, 6
t_CAC — 13 — 15 — 20 ns 4, 5
Access Time from Column Address
Access Time from CAS Precharge
t_AA — 25 — 30 — 35 ns 4, 6
t_CPA — 30 — 35 — 40 ns 4, 13
Access Time from OE
t_OEA — 13 — 15 — 20 ns 4
Output Low Impedance Time from CAS
t_CLZ
0
—
0
—
0
— ns 4
Data Output Hold After CAS Low
t_DOH
5
—
5
—
5
— ns
CAS to Data Output Buffer Turn-off Delay Time t_CEZ 0
13
0
15
0
20 ns 7, 8
RAS to Data Output Buffer Turn-off Delay Time t_REZ 0
13
0
15
0
20 ns 7, 8
OE to Data Output Buffer Turn-off Delay Time t_OEZ 0
13
0
15
0
20 ns 7
WE to Data Output Buffer Turn-off Delay Time t_WEZ 0
13
0
15
0
20 ns 7
Transition Time
t_T
1
50
1
50
1
50 ns 3
Refresh Period
RAS Precharge Time
RAS Pulse Width
t_REF — 16 — 16 — 16 ms
t_RP 30 — 40 — 50 — ns
t_RAS 50 10,000 60 10,000 70 10,000 ns
RAS Pulse Width (Fast Page Mode with EDO) t_RASP 50 100,000 60 100,000 70 100,000 ns
RAS Hold Time
RAS Hold Time referenced to OE
t_RSH
7
t_ROH
7
— 10 — 13 — ns
— 10 — 13 — ns
CAS Precharge Time (Fast Page Mode with EDO) t_CP
7
— 10
—
10 — ns 15
CAS Pulse Width
t_CAS 7 10,000 10 10,000 13 10,000 ns
CAS Hold Time
CAS to RAS Precharge Time
RAS Hold Time from CAS Precharge
OE Hold Time from CAS (DQ Disable)
RAS to CAS Delay Time
RAS to Column Address Delay Time
t_CSH 35 — 40 — 45 — ns
t_CRP
5
—
5
—
5
— ns 13
t_RHCP 30 — 35 — 40 — ns 13
t_CHO
5
—
5
—
5
— ns
t_RCD 11 37 14 45 14 50 ns 5
t_RAD
9
25 12 30 12 35 ns 6
Row Address Set-up Time
t_ASR
0
—
0
—
0
— ns
Row Address Hold Time
t_RAH
7
— 10 — 10 — ns
Column Address Set-up Time
t_ASC
0
—
0
—
0
— ns 12
Column Address Hold Time
Column Address to RAS Lead Time
t_CAH
7
— 10 — 13 — ns 12
t_RAL 25 — 30 — 35 — ns
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