4-340

FIGURE 2. DEN, PDEN QUALIFICATION TIMING

FIGURE 3. ADDRESS ENABLE (AEN) TIMING (THREE-STATE ENABLE/DISABLE)

NOTES:

1. Address/Data Bus is shown only for reference purposes.

2. Leading edge of ALE and MCE is determined by the falling edge of CLK or status going active. Whichever occurs last.

3. All timing measurements are made at 1.5V unless otherwise specified.

TAEVNV (22)

TCEVNV (23)

CEN

DEN

AEN

PDEN

CEN

TAELCV

(21)

1.5V

TAELCH (19)

VOH

TCELRH

(24)

TCELRH (24)

TAEHCZ (20)

1.5V

0.5V VOH

OUTPUT

COMMAND

AEN

CEN MUST BE LOW OR INVALID PRIOR TO T2 TO PREVENT THE COMMAND FROM BEING GENERATED.

82C88