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參數(shù)資料
| 型號： | W2Z512K72SJ35ES |
| 廠商： | WHITE ELECTRONIC DESIGNS CORP |
| 元件分類： | SRAM |
| 英文描述： | 512K X 72 MULTI DEVICE SRAM MODULE, 3.5 ns, PBGA209 |
| 封裝： | PLASTIC, BGA-209 |
| 文件頁數(shù)： | 9/12頁 |
| 文件大?。?/td> | 281K |
| 代理商： | W2Z512K72SJ35ES |
6
White Electronic Designs Corporation Westborough, MA (508) 366-5151
W2Z512K72SJ
SNOOZE MODE
SNOOZE MODE is a low-current, power-down mode
in which the device is deselected and current is re-
duced to ISB2Z. The duration of SNOOZE MODE is dic-
tated by the length of time Z is in a HIGH state. After the
device enters SNOOZE MODE, all inputs except ZZ
become gated inputs and are ignored. ZZ is an asyn-
chronous, 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
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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