MSM5117805C Datasheet, PDF (6/17 Pages) OKI electronic componets – 2,097,152-Word x 8-Bit DYNAMIC RAM : FAST PAGE MODE TYPE WITH EDO

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MSM5117805C
AC Characteristics (1/2)
(V_CC = 5 V ±10%, Ta = 0°C to 70°C) Note 1, 2, 3, 12, 13
Parameter
MSM5117805 MSM5117805 MSM5117805
Symbol ^C-50
C-60
C-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
t_RAC — 50 — 60 — 70 ns 4, 5, 6
Access Time from CAS
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}
Access Time from OE
Output Low Impedance Time from CAS
t_OEA — 13 — 15 — 20 ns 4
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
t_REF — 32 — 32 — 32 ms
RAS Precharge Time
t_RP 30 — 40 — 50 — ns
RAS Pulse Width
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
CAS Pulse Width
t_CAS 7 10,000 10 10,000 13 10,000 ns
CAS Hold Time
t_CSH 35 — 40 — 45 — ns
CAS to RAS Precharge Time
t_CRP 5
—
5
—
5
— ns
RAS Hold Time from CAS Precharge
t_RHCP 30 — 35 — 40 — ns
OE Hold Time from CAS (DQ Disable)
t_CHO 5
—
5
—
5
— ns
RAS to CAS Delay Time
RAS to Column Address Delay Time
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
Column Address Hold Time
Column Address to RAS Lead Time
t_CAH 7
— 10 — 13 — ns
t_RAL 25 — 30 — 35 — ns
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