AS5SS256K36 데이터 시트보기 (PDF) - Austin Semiconductor

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AS5SS256K36

256K x 36 SSRAM Flow-Through, Synchronous Burst SRAM

Austin Semiconductor 

Austin Semiconductor, Inc.

SSRAM

AS5SS256K36 &

AS5SS256K36A

SNOOZE MODE

SNOOZE MODE is a low-current, “power-down” mode in

which the device is deselected and current is reduced to ISB2Z.

The duration of SNOOZE MODE is dictated by the length of

time ZZ is in a HIGH state. After the device enters SNOOZE

MODE, all inputs except ZZ become gated inputs and are ig-

nored.

ZZ is an asynchronous, active HIGH input that causes the

device to enter SNOOZE MODE. When ZZ becomes a logic

HIGH, ISB2Z is guaranteed after the setup time tZZ is met. Any

READ or WRITE operation pending when the device enters

SNOOZE MODE is not guaranteed to complete successfully.

Therefore, SNOOZE MODE must not be initiated until valid

pending operations are completed.

SNOOZE MODE ELECTRICAL CHARACTERISTICS




    

    

  








     

     





 

      





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NOTE: 1. This parameter is sampled.

 



















AS5SS256K36 &

AS5SS256K36A

Rev. 3.6 06/05

SNOOZE MODE WAVEFORM

CLK

ZZ

ISUPPLY

ALL INPUTS*

*Except ZZ

tZZ

tRZZ

tZZI

tSB2

11112222333311114444222255553333444455556666777788881111t992222991111R3333ZZ4444I 5555

11111222223333344444 Don’t Care

11

Austin Semiconductor, Inc. reserves the right to change products or specifications without notice.

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