MCM6208C

5

MOTOROLA FAST SRAM

– 12

– 15

– 20

– 25

– 35

Parameter

Symbol

Min

Max

Min

Max

Min

Max

Min

Max

Min

Max

Unit

Notes

Write Cycle Time

tAVAV

12

—

15

—

20

—

25

—

35

—

ns

2

Address Setup Time

tAVWL

0

—

0

—

0

—

0

—

0

—

ns

Address Valid to End of Write

tAVWH

10

—

12

—

15

—

20

—

20

—

ns

Write Pulse Width

tWLWH,

tWLEH

10

—

12

—

15

—

20

—

20

—

ns

Write Pulse Width, E High

tWLWH,

tWLEH

8

—

10

—

12

—

15

—

15

—

ns

Data Valid to End of Write

tDVWH

6

—

7

—

8

—

10

—

10

—

ns

Data Hold Time

tWHDX

0

—

0

—

0

—

0

—

0

—

ns

Write Low to Output High–Z

tWLQZ

0

7

0

7

0

8

0

10

0

10

ns

3, 4, 5

Write High to Output Active

tWHQX

4

—

4

—

4

—

4

—

4

—

ns

3, 4, 5

Write Recovery Time

tWHAX

0

—

0

—

0

—

0

—

0

—

ns

NOTES:

1. A write occurs during the overlap of E low and W low.

2. All timings are referenced from the last valid address to the first transitioning address.

3. At any given voltage and temperature, tWLQZ max is less than tWHQX min, both for a given device and from device to device.

4. Transition is measured

± 500 mV from steady–state voltage with load of Figure 1B.

5. This parameter is sampled and not 100% tested.

DATA VALID

tDVWH

tAVWL

tAVWH

tAVAV

tWHAX

tWLWH

tWHDX

tWLQZ

tWHQX

HIGH–Z

HIGH–Z

A (ADDRESS)

W (WRITE ENABLE)

E (CHIP ENABLE)

Q (DATA OUT)

D (DATA IN)

tWLEH