OKI Semiconductor
MSM5416258B
DESCRIPTION
Technical Information
262,144-Word x 16-Bit DYNAMIC RAM : FAST PAGE MODE TYPE WITH EDO
The MSM5416258B is a 262,144-word x 16-bit dynamic RAM fabricated in OKI's CMOS silicon gate
technology. The MSM5416258B achieves high integration,high-speed operation,and low-power
consumption due to quadruple polysilicon double metal CMOS. The MSM5416258B is available in a
40-pin plastic SOJ.
FEATURES
• 262,144-word by 16-bit configuration
• Single 5V power supply,
±10%
tolerance
• Input :TTL compatible
• Output :TTL compatible, 3-state
• Refresh : 512 cycles/8ms
• Fast page mode with EDO,read modify write capability
• Byte wide control: 2 CAS control
• CAS before RAS refresh, Hidden refresh, RAS only refresh capability
• Package : 40-Pin 400 mil plastic SOJ (SOJ40-P-400)
(Product : MSM5416258B-xxJS) xx : indicates speed rank.
PRODUCT FAMILY
Access Time (Max.)
Family
MSM5416258B-28
MSM5416258B-30
MSM5416258B-35
Cycle Time (Min.)
t
RAC
28ns
30ns
35ns
t
AA
15ns
16ns
19ns
t
CAC
t
OEA
9ns
9ns
10ns
9ns
9ns
10ns
t
RC
48ns
55ns
60ns
t
HPC
12ns
13ns
13ns
Power Dissipation
1485mW
1458mW
1430mW
PIN CONFIGURATION ( TOP VIEW )
Vcc
DQ0
DQ1
DQ2
DQ3
Vcc
DQ4
DQ5
DQ6
DQ7
NC
NC
WE
RAS
NC
A0
A1
A2
A3
Vcc
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
25
24
23
22
21
Vss
DQ15
DQ14
DQ13
DQ12
Vss
DQ11
DQ10
DQ9
DQ8
NC
LCAS
UCAS
OE
A8
A7
A6
A5
A4
Vss
Pin Names
A0-A8
RAS
LCAS,UCAS
DQ0-15
WE
OE
Vcc
Vss
NC
Function
Address Input
Row Address Strobe
Column Address Strobe
Data-Input/ Data-Output
Write Enable
Output Enable
Power Supply ( +5V )
Ground ( 0V )
No Connection
Note1 : The same power supply voltage must be
provided to every Vcc pin, and the same
GND voltage level must beprovideded to
every Vss pin.
40Pin 400mil SOJ
REVISION-2 1997.11.10, specification are subject to change without advanced notice.
OKI [ OKI ELECTRONIC COMPONETS ]
