23/29

M69AR048B

Figure 21. Output Enable and Write Enable Controlled, Read and Write Mode AC Waveforms

Note: E1 can be tied to Low for W and G controlled operation.

When E1 is tied to Low, output is exclusively controlled by G.

Figure 22. Output Enable, Write Enable and UB/LB Controlled, Read/Write AC Waveforms

Note: E1 can be tied to Low for W and G controlled operation.

When E1 is tied to Low, output is exclusively controlled by G.

WRITE ADDRESS

READ ADDRESS

A0-A20

E1

W

UB, LB

G

DATA

OUT

DATA

IN

DQ0-DQ15

tWHAX

tWLWH

tGHQX

tGHQZ

tGHQX

tGLQX

tDVWH

tWHDZ

ai09810

DATA

OUT

tGLQV

tAXAV

tAVAX

tAVAX(read)

tAXAV

tAVWL

tAXAV

tAVQV

tAVGL

tGHQZ

Low

WRITE ADDRESS

READ ADDRESS

A0-A20

E1

W

UB, LB

G

DATA

OUT

DATA

IN

DQ0-DQ15

tBHAX

tBLBH

tBHQX

tBHQZ

tBHQX

tBLQX

tDVBH

tBHDZ

ai09811

DATA

OUT

tBLQV

tAXAV

tAVAX

tAVAX(read)

tAXAV

tAVBL

tAXAV

tAVQV

tAVGL

tBHQZ

Low