MCM44256B SERIES

7

MOTOROLA FAST SRAM

P

Sb l

–12

–15

–17

Ui

N

Parameter

Symbol

Min

Max

Min

Max

Min

Max

Unit

Notes

Address Setup Time

tAVEL

0

—

0

—

0

—

ns

A0 Setup Time

tA0VEL

0

—

0

—

0

—

ns

Address Valid to End of Write

tAVEH

12

—

15

—

17

—

ns

A0 Valid to End of Write

tA0VEH

10

—

12

—

14

—

ns

Data/Tag Enable to End of Write

tELEH,

tELWH

12

—

15

—

17

—

ns

Data Valid to End of Write

tDVEH

6

—

7

—

8

—

ns

Data Hold Time

tEHDX

5

—

5

—

5

—

ns

Write Recovery Time

tEHAX

5

—

5

—

5

—

ns

Write Recovery Time — A0

tEHA0X

5

—

5

—

5

—

ns

NOTES:

1. A write occurs during the overlap of DCS or TCS low and WE low.

2. Enable timings are the same for both DCS and TCS.

tEHDX

tDVEH

tEHAX

tELWH

tELEH

tAVEL

DATA VALID

HIGH–Z

WE (WRITE ENABLE)

DCS/TCS

(DATA/TAG ENABLE)

Q (DATA OUT)

D (DATA IN)

A1 – A17

tAVEH

A0

tEHA0X

tA0VEL

tA0VEH

WRITE CYCLE 2