MSC23409C Datasheet, PDF (6/13 Pages) OKI electronic componets – 4,194,304-Word x 9-Bit DRAM MODULE : FAST PAGE MODE TYPE

¡ Semiconductor
MSC23409C/CL-xxDS9
AC Characteristics (1/2)
Parameter
Random Read or Write Cycle Time
Fast Page Mode Cycle Time
Access Time from RAS
Access Time from CAS
Access Time from Column Address
Access Time from CAS Precharge
Output Low Impedance Time from CAS
Output Buffer Turn-off Delay Time
Transition Time
Refresh Period
Refresh Period (L-version)
RAS Precharge Time
RAS Pulse Width
RAS Pulse Width (Fast Page Mode)
RAS Hold Time
CAS Precharge Time
CAS Pulse Width
CAS Hold Time
CAS to RAS Precharge Time
RAS to CAS Delay Time
RAS to Column Address Delay Time
Row Address Set-up Time
Row Address Hold Time
Column Address Set-up Time
Column Address Hold Time
Column Address Hold Time from RAS
Column Address to RAS Lead Time
(V_CC = 5 V ±10%, Ta = 0°C to 70°C) Note 1,2,3,9,10
MSC23409C/CL MSC23409C/CL MSC23409C/CL
Symbol -60DS9
-70DS9
-80DS9 Unit Note
Min. Max. Min. Max. Min. Max.
t_RC 110 — 130 — 150 — ns
t_PC 40 — 45 — 50 — ns
t_RAC — 60 — 70 — 80 ns _{4, 5, 6}
t_CAC — 15 — 20 — 20 ns _{4, 5}
t_AA — 30 — 35 — 40 ns _{4, 6}
t_CPA — 35 — 40 — 45 ns ₄
t_CLZ
0
—
0
—
0
— ns ₄
t_OFF
0
15
0
20
0
20 ns ₇
t_T
3
50
3
50
3
50 ns ₃
t_REF — 16 — 16 — 16 ms
t_REF — 128 — 128 — 128 ms
t_RP 40 — 50 — 60 — ns
t_RAS 60 10K 70 10K 80 10K ns
t_RASP 60 100K 70 100K 80 100K ns
t_RSH 15 — 20 — 20 — ns
t_CP 10 — 10 — 10 — ns
t_CAS 15 10K 20 10K 20 10K ns
t_CSH 60 — 70 — 80 — ns
t_CRP
5
—
5
—
5
— ns
t_RCD 20 45 20 50 20 60 ns ₅
t_RAD 15 30 15 35 15 40 ns ₆
t_ASR
0
—
0
—
0
— ns
t_RAH 10 — 10 — 10 — ns
t_ASC
0
—
0
—
0
— ns
t_CAH 15 — 15 — 15 — ns
t_AR 50 — 55 — 60 — ns
t_RAL 30 — 35 — 40 — ns
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