WED2ZL361MV 查看數據表（PDF） - White Electronic Designs Corporation
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WED2ZL361MV Datasheet PDF : 12 Pages
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White Electronic Designs
WED2ZL361MV
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 enters
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 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.
Description
Current during SNOOZE MODE
ZZ active to input ignored
ZZ inactive to input sampled
ZZ active to snooze current
ZZ inactive to exit snooze current
SNOOZE MODE
Conditions
ZZ ≥ VIH
SYMBOL
ISB2Z
tZZ
tRZZ
tZZI
tRZZI
Min
2(tKC)
Max
10
2(tKC)
2(tKC)
Units
mA
ns
ns
ns
ns
Notes
1
1
1
1
CLOCK
ZZ
ISUPPLY
ALL INPUTS
(except ZZ)
Output (Q)
FIGURE 2 – SNOOZE MODE TIMING DIAGRAM
tZZ
tZZI
IISB2Z
HIGH-Z
tRZZ
tRZZI
DESELECT or READ Only
DON'T CARE
June 2004
Rev. 3
6
White Electronic Designs Corporation • (602) 437-1520 • www.wedc.com
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