
AT27C516
9. AC Waveforms for Read Operation (1)
10. AC Characteristics for Read Operation
AT27C516
-45
-70
Symbol
(3)
t ACC
t CE (2)
t OE (2)(3)
Parameter
Address to Output Delay
CE to Output Delay
OE to Output Delay
Condition
CE = OE = V IL
OE = V IL
CE = V IL
Min
Max
45
45
20
Min
Max
70
70
25
Units
ns
ns
ns
t DF (4)(5)
t OH
OE or CE High to Output Float, whichever occurred first
Output Hold from Address, CE or OE, Whichever
Occurred First
7
20
7
25
ns
ns
Notes:
1. Timing measurement reference level is 1.5V for -45 devices. Input AC drive levels are V IL = 0.0V and V IH = 3.0V. Timing mea-
surement reference levels for all other speed grades are V OL = 0.8V and V OH = 2.0V. Input AC drive levels are V IL = 0.45V
and V IH = 2.4V.
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.
5
0362E–EPROM–1/08