M68AW512 Ver la hoja de datos (PDF) - STMicroelectronics

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M68AW512

8 Mbit (512K x16) 3.0V Asynchronous SRAM

STMicroelectronics 

M68AW512D

Table 2. Operating Modes

Operation

E1 E2 W G LB UB DQ0-DQ7 DQ8-DQ15

Power

VIH X

X

X

X

X

Hi-Z

Deselected

(Standby/Power-Down)

X

VIL

X

X

X

X

Hi-Z

X

X

X

X

VIH VIH

Hi-Z

Hi-Z

Standby (ISB)

Hi-Z

Standby (ISB)

Hi-Z

Standby (ISB)

Lower Byte Read

VIL VIH VIH VIL VIL VIH Data Output

Hi-Z

Active (ICC)

Lower Byte Write

VIL VIH VIL

X

VIL VIH Data Input

Hi-Z

Active (ICC)

Output Disabled

VIL VIH VIH VIH

X

X

Hi-Z

Hi-Z

Active (ICC)

Upper Byte Read

VIL VIH VIH VIL VIH VIL

Hi-Z

Data Output Active (ICC)

Upper Byte Write

VIL VIH VIL

X

VIH VIL

Hi-Z

Data Input

Active (ICC)

Word Read

VIL VIH VIH VIL VIL VIL Data Output Data Output Active (ICC)

Word Write

VIL VIH VIL X VIL VIL Data Input Data Input

Active (ICC)

Output Disabled

VIL VIH

X

VIH

X

X

Hi-Z

Hi-Z

Active (ICC)

Note: 1. X = VIH or VIL.

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