AC Characteristics for Read Operation (V
CC
= 2.7V to 3.6V and 4.5V to 5.5V)
AT27BV1024
-90 -12 -15
Symbol Parameter Condition
Min Max Min Max Min Max
Units
t
ACC
(3)
Address to
Output Delay
CE = OE
= V
IL
90 120 150 ns
t
CE
(2)
CE to Output Delay OE = V
IL
90 120 150 ns
t
OE
(2, 3)
OE to Output Delay CE = V
IL
30 35 50 ns
t
DF
(4, 5)
OE or CE High to Output Float,
whichever occurred first
30 30 40 ns
t
OH
Output Hold from Address, CE or OE,
whichever occurred first
0 0 0 ns
Notes: 2, 3, 4, 5. - see AC Waveforms for Read Operation.
= Preliminary Information
AC Waveforms for Read Operation
(1)
Notes: 1. Timing measurement references are 0.8V and 2.0V.
Input AC drive levels are 0.45V and 2.4V, unless oth-
erwise specified.
2.
OE may be delayed up to t
CE
- t
OE
after the falling
edge of
CE without impact on t
CE
.
3.
OE may be delayed up to t
ACC
- t
OE
after the address
is valid without impact on t
ACC
.
4. This parameter is only sampled and is not 100% tested.
5. Output float is defined as the point when data is no longer
driven.
6. When reading a 27BV1024, a 0.1 µF capacitor is required
across V
CC
and ground to supress spurious voltage tran-
sients.
AT27BV1024
3-37
