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參數(shù)資料
| 型號： | WED2ZL362MS30BC |
| 廠商： | WHITE ELECTRONIC DESIGNS CORP |
| 元件分類： | SRAM |
| 英文描述： | 2M X 36 MULTI DEVICE SRAM MODULE, 3 ns, PBGA119 |
| 封裝： | PLASTIC, BGA-119 |
| 文件頁數(shù)： | 9/12頁 |
| 文件大小： | 272K |
| 代理商： | WED2ZL362MS30BC |
6
White Electronic Designs Corporation Westborough, MA (508) 366-5151
White Electronic Designs
WED2ZL362MS
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 Z is in a HIGH state. After the device en-
ters SNOOZE MODE, all inputs except ZZ become gated
inputs and are ignored. ZZ is an asynchronous, active
HIGH input that causes the device to enter SNOOZE
MODE.
When ZZ becomes a logic HIGH, ISB2Z is guaranteed af-
ter the setup time tZZ is met. Any READ or WRITE op-
eration pending when the device enters SNOOZE MODE
is not guaranteed to complete successfully. Therefore,
SNOOZE MODE must not be initiated until valid pend-
ing operations are completed.
SNOOZE MODE
Description
Conditions
Symbol
Min
Max
Units
Notes
Current during SNOOZE MODE
ZZ VIH
ISB2Z
10
mA
ZZ active to input ignored
tZZ
2(tKC)ns
1
ZZ inactive to input sampled
tRZZ
2(tKC)ns
1
ZZ active to snooze current
tZZI
2(tKC)ns
1
ZZ inactive to exit snooze current
tRZZI
ns
1
FIG. 2 SNOOZE MODE TIMING DIAGRAM
ZZ
ISUPPLY
CLOCK
ALL INPUTS
(except ZZ)
Output (Q)
tZZ
tZZI
tRZZ
tRZZI
HIGH-Z
DESELECT or READ Only
IISB2Z
DON'T CARE
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