MSM54V24632A Datasheet, PDF (8/29 Pages) OKI electronic componets – 131,072-Word x 32-Bit x 2-Bank SGRAM without Graphics Functions

MSM54V24632A
¡ Semiconductor
AC Characteristics 1
Note 1, 2
Parameter
MSM54V24632A-8 MSM54V24632A-10 MSM54V24632A-12
Symbol
Unit Note
Min. Max. Min. Max. Min. Max.
CL = 3
8
—
10
—
12
— ns
Clock Cycles Time CL = 2 t_CC
12
—
15
—
18
— ns
CL = 1
24
—
30
—
36
— ns
CL = 3
—
7
—
9
—
10 ns 3, 4
Access Time from
Clock
CL = 2
t_AC
—
10
—
13
—
15 ns 3, 4
CL = 1
—
22
—
27
—
32 ns 3, 4
Clock "H" Pulse Time
Clock "L" Pulse Time
Input Setup Time
Input Hold Time
t_CH
2.5
—
3
—
4
— ns
t_CL
2.5
—
3
—
4
— ns
t_SI
2.5
—
3
—
3
— ns
t_HI
1
—
1
—
1.5
— ns
Output Low Impedance
Time form Clock
t_OLZ
3
—
3
—
3
— ns
Output High Impedance
Time form Clock
t_OHZ
—
6
—
8
—
10 ns
Output Hold from Clock
t_OH
3
—
3
—
3
— ns 3
RAS Cycle Time
t_RC
72
—
90
—
106
— ns
RAS Precharge Time
t_RP
24
—
30
—
36
— ns
RAS Active Time
t_RAS
48
10⁵
60
10⁵
72
10⁵ ns
RAS to CAS Delay Time
t_RCD
24
—
30
—
36
— ns
Write Recovery Time
t_WR
16
—
20
—
24
— ns
Write Command Input Time
form Output
t_OWD
16
—
20
—
24
— ns
RAS to RAS Bank Active
Delay Time
t_RRD
16
—
20
—
24
— ns
Refresh Time
t_REF
—
16
—
16
—
16 ms
Power-down Exit Set-up Time t_PDE
8
—
10
—
12
— ns
Input Level Transition Time t_T
1
5
1
5
1
5
ns
9