M69AR048B

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Figure 19. Chip Enable Controlled, Read and Write Mode AC Waveforms

Note: Write address is valid from either E1 or W of last falling edge.

Figure 20. Chip Enable, Write Enable, Output Enable Controlled, Read/Write AC Waveforms

Note: G can be Low fixed in write operation under E1 control read-write-read operation.

WRITE ADDRESS

READ ADDRESS

A0-A20

E1

W

UB, LB

G

READ DATA

OUTPUT

WRITE DATA

INPUT

DQ0-DQ15

tEHAX

tELAX

tELAX(read)

tEHAX(read)

tEHAX

tAVEL

tAVEL

(read)

tELEH

tELQV

tEHEL

tEHEL

tGHEL

tEHQX

tEHQZ

tEHQX

tELQX

tDVEH

tEHDZ

ai09808

WRITE ADDRESS

READ ADDRESS

A0-A20

E1

W

UB, LB

G

READ DATA

OUTPUT

WRITE DATA

INPUT

DQ0-DQ15

tEHAX

tELAX

tELAX(read)

tEHAX(read)

tWHAX

tAVEL

tAVEL

(read)

tWLWH

tELQV

tEHEL

tEHEL

tGHEL

tEHQX

tEHQZ

tGHQX

tGLQX

tDVWH

tWHDZ

ai09809

READ DATA

OUTPUT

tGLQV