T35L6464A-5Q 데이터 시트보기 (PDF) - Taiwan Memory Technology

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T35L6464A-5Q

64K x 64 SRAM 3.3V SUPPLY, FULLY REGISTERED AND OUTPUTS, BURST COUNTER

Taiwan Memory Technology 

tm TE

CH

T35L6464A

SNOOZE MODE

SNOOZE MODE is a low current, “power

down” mode in which the device is deselected and

the current is reduced to IZZ. The duration of

SNOOZE MODE is dictated by the length of time

the ZZ pin is in a HIGH state. After entering

SNOOZE MODE, the clock and all other inputs

are ignored.

The ZZ pin (pin 63) is an asynchronous ,

active HIGH input that causes the device to enter

SNOOZE MODE. When the ZZ pin becomes a

logic HIGH, IZ Z is guaranteed after the setup time

tZZ is met. Any access pending when entering

SNOOZE MODE is not guaranteed to successfully

complete. Therefore, SNOOZE MODE must not

be initiated until valid pending operations are

completed.

SNOOZE MODE ELECTRICAL CHARACTERISTICS

DESCRIPTION

Current during

SNOOZE MODE

ZZ HIGH to

SNOOZE MODE time

SNOOZE MODE

Operation Recovery Time

CONDITIONS SYMBOL

ZZ ≥ VIH

IZZ

MIN

tZZ

2(tKC)

tRZZ

MAX

10

2(tKC)

UNITS NOTES

mA

ns

3

ns

3

SNOOZE MODE WAVEFORM

CLK

CE

ZZ

I S UPP LY

t ZZ

I ZZ

tRZ Z

I S U PP L Y

DON'T CARE

Note:

1. The CE signal shown above refers to a TRUE state on all chip selects for the device.

2. All other inputs held to static CMOS levels (VIN ≤ Vss + 0.2 V or ≥ Vcc -0.2 V).

3. This parameter is sampled.

Taiwan Memory Technology, Inc. reserves the right P. 11

to change products or specifications without notice.

Publication Date: AUG. 1998

Revision: E

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