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Table 2. Operating Modes

2. Output Disable mode should not be kept longer than 1µs.

3. Power-down mode can be entered from Stand-by state, and all DQ pins are in Hi-Z state.

4. Can be either VIL or VIH but must be valid before Read or Write.

5. Byte Read is not supported.

Operation

E2

E1

W

G

LB

UB

A0-A19

DQ0-DQ7

DQ8-

DQ15

Data Re-

tention

Standby (Deselect)

Hi-Z

Hi-Z

Yes

Hi-Z

Hi-Z

Yes

Output Disabled

(No Read)

Valid

Hi-Z

Hi-Z

Yes

Word Read(5)

Valid

Output Valid

Yes

Word Read

Valid

Output Valid

Yes

Upper Byte Write

Valid

Invalid

Input Valid

Yes

Lower Byte Write

Valid

Input Valid

Invalid

Yes

Word Write

Valid

Input Valid

Input Valid

Yes

Hi-Z

Hi-Z

No