MCM6226BB

6

MOTOROLA FAST SRAM

6226BB–15

6226BB–17

6226BB–20

6226BB–25

6226BB–35

Parameter

Symbol

Min

Max

Min

Max

Min

Max

Min

Max

Min

Max

Unit

Notes

Write Cycle Time

tAVAV

15

—

17

—

20

—

25

—

35

—

ns

5

Address Setup Time

tAVEL

0

—

0

—

0

—

0

—

0

—

ns

Address Valid to End of Write

tAVEH

12

—

14

—

15

—

17

—

20

—

ns

Enable to End of Write

tELEH,

t

12

—

14

—

15

—

17

—

20

—

ns

6, 7

ELEH,

tELWH

Write Pulse Width

tWLEH

12

—

14

—

15

—

17

—

20

—

ns

Data Valid to End of Write

tDVEH

7

—

8

—

9

—

10

—

11

—

ns

Data Hold Time

tEHDX

0

—

0

—

0

—

0

—

0

—

ns

Write Recovery Time

tEHAX

0

—

0

—

0

—

0

—

0

—

ns

NOTES:

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

2. Product sensitivities to noise require proper grounding and decoupling of power supplies as well as minimization or elimination of bus con-

tention conditions during read and write cycles.

3. E1 and E2 are represented by E in this data sheet. E2 is of opposite polarity to E1.

4. If G goes low coincident with or after W goes low, the output will remain in a high–impedance state.

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

6. If E goes low coincident with or after W goes low, the output will remain in a high–impedance state.

7. If E goes high coincident with or before W goes high, the output will remain in a high–impedance state.

tEHDX

tDVEH

tEHAX

tELWH

tAVEL

tAVEH

DATA VALID

tAVAV

HIGH–Z

A (ADDRESS)

W (WRITE ENABLE)

E (CHIP ENABLE)

Q (DATA OUT)

D (DATA IN)

tELEH

tWLEH

ORDERING INFORMATION

(Order by Full Part Number)

Motorola Memory Prefix

Part Number

Package (XJ = 400 mil SOJ, EJ = 300 mil SOJ)

Full Part Numbers — MCM6226BBXJ15

MCM6226BBXJ15R2

MCM6226BBEJ15

MCM6226BBEJ15R2

MCM6226BBXJ17

MCM6226BBXJ17R2

MCM6226BBEJ17

MCM6226BBEJ17R2

MCM6226BBXJ20

MCM6226BBXJ20R2

MCM6226BBEJ20

MCM6226BBEJ20R2

MCM6226BBXJ25

MCM6226BBXJ25R2

MCM6226BBEJ25

MCM6226BBEJ25R2

MCM6226BBXJ35

MCM6226BBXJ35R2

MCM6226BBEJ35

MCM6226BBEJ35R2

Shipping Method (R2 = Tape and Reel, Blank = Rails)

Speed (15 = 15 ns, 17 = 17 ns, 20 = 20 ns, 25 = 25 ns,

35 = 35 ns)

MCM 6226BB

XX

XX

XX