IS61LV25616-7LQ 데이터 시트보기 (PDF) - Integrated Silicon Solution

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IS61LV25616-7LQ

256K x 16 HIGH SPEED ASYNCHRONOUS CMOS STATIC RAM WITH 3.3V SUPPLY

Integrated Silicon Solution 

IS61LV25616

ISSI ®

WRITE CYCLE SWITCHING CHARACTERISTICS(1,3) (Over Operating Range)

Symbol

tWC

tSCE

tAW

tHA

tSA

tPWB

tPWE1

tPWE2

tSD

tHD

tHZWE(2)

tLZWE(2)

Parameter

Write Cycle Time

CE to Write End

Address Setup Time

to Write End

Address Hold from Write End

Address Setup Time

LB, UB Valid to End of Write

WE Pulse Width

WE Pulse Width (OE = LOW)

Data Setup to Write End

Data Hold from Write End

WE LOW to High-Z Output

WE HIGH to Low-Z Output

1 -7

-8

-10

-12

-15

Min. Max. Min. Max. Min. Max. Min. Max. Min. Max. Unit

7—

8—

10 —

12 —

15 —

ns

5—

5—

5.5 —

5.5 —

8—

8—

8—

8—

10 —

10 —

ns

2 ns

0—

0—

5—

5—

7—

3.5 —

0—

—3

2—

0—

0—

5.5 —

5.5 —

5—

4—

0—

— 3.5

2—

0—

0—

8—

8—

10 —

6—

0—

—5

2—

0—

0—

8—

8—

12 —

6—

0—

—6

2—

0—

0—

10 —

10 —

12 —

7—

0—

—7

2—

ns

3 ns

ns

ns

4 ns

ns

ns

5 ns

ns

Notes:

1. Test conditions assume signal transition times of 3 ns or less, timing reference levels of 1.5V, input pulse levels of 0V to 3.0V and

output loading specified in Figure 1.

6

2. Tested with the load in Figure 2. Transition is measured ±500 mV from steady-state voltage. Not 100% tested.

3. The internal write time is defined by the overlap of CE LOW and UB or LB, and WE LOW. All signals must be in valid states to

initiate a Write, but any one can go inactive to terminate the Write. The Data Input Setup and Hold timing are referenced to the

rising or falling edge of the signal that terminates the write.

Shaded area product in development

7

8

9

10

11

12

Integrated Silicon Solution, Inc. — 1-800-379-4774

7

Rev. B

09/29/00

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