KEY TO SWITCHING WAVEFORMS
WAVEFORM
INPUTS
Steady
OUTPUTS
Changing from H to L
Changing from L to H
Don’t Care, Any Change Permitted
Changing, State Unknown
Does Not Apply
Center Line is High Impedance State (High Z)
SWITCHING WAVEFORMS
Device and
Outputs Data
Power-up, Standby Address Selection Enabled Valid
Addresses
Addresses Stable
tAVAV (tRC)
CE# (E#)
OE# (G#)
tWHGL
Standby, Power-down
tEHQZ
(tDF)
tGHQZ
(tDF)
WE# (W#)
tVCS
Data (DQ)
5.0 V
VCC
0V
High Z
tGLQV (tOE)
tELQV (tCE)
tGLQX (tOLZ)
tELQX (tLZ)
tAXQX (tOH)
Output Valid
tAVQV (tACC)
High Z
Figure 9. AC Waveforms for Read Operations
16778D-18
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Am28F010A