MSC23S2640E-8BS8 (98.08.19)

Page 8/11

AC CHARACTERISTIC

(VCC = 3.3

± 0.3V, Ta = 0 ~70°C)

NOTE

1, 2

.

Module Spec.

Parameter

Symbol

Min.

Max.

Unit

Note

Clock Cycle Time

CL=3

8-

ns

CL=2

12

-

ns

CL=3

-

6

ns

3, 4

Access Time from Clock

-10

ns

3, 4

Clock "H" Pulse Time

3-

ns

Clock "L" Pulse Time

3-

ns

Input Setup Time (CLK, ADD, DIN)

2-

ns

Input Hold Time (CLK, ADD, DIN)

1-

ns

Output Low Impedance Time from Clock

3-

ns

Output High Impedance Time from Clock

-9

ns

Output Hold from Clock

3-

ns

/RAS Cycle Time

70

-

ns

/RAS Precharge Time

20

-

ns

/RAS Active Time

48

100,000

ns

/RAS to /CAS Delay Time

20

-

ns

Write Recovery Time

8-

ns

Write Command Input Time from Output

20

-

ns

/RAS to /RAS Bank Active Delay Time

20

-

ns

Refresh Time

-64

ms

Power-down Exit Set-up Time

10

-

ns

Input Level Transition Time

-3

ns

/CAS to /CAS Delay Time (Min)

1

Cycle

Clock Disable Time from CKE

1

Cycle

Data Output High Impedance Time from DQM

2

Cycle

Data Input Mask Time from DQMB

0

Cycle

Data Input Time from Write Command

0

Cycle

Data Output High Inpedance Time

CL

Cycle

Active Command Input Time from MODE

3

Cycle

NOTES:

1)

2)

The reference level for timing of input signals is 1.4V.

3)

This parameter is measured with a load circuit equivalent to 1 TTL load and 50pF

4)

An access time is measured at 1.4V.

5)

OUTPUT

50pF

OUTPUT LOAD

50

Ω

1.4v