AT27BV020 Datasheet, PDF (5/10 Pages) ATMEL Corporation – 2-Megabit 256K x 8 Unregulated Battery-Voltage High Speed OTP EPROM

AT27BV020
AC Characteristics for Read Operation
(V_CC = 2.7V to 3.6V and 4.5V to 5.5V)
Symbol Parameter
Condition
t_ACC(3)
t_CE(2)
t_OE(2)(3)
t_DF(4)(5)
Address to Output Delay
CE to Output Delay
OE to Output Delay
OE or CE High to Output Float,
whichever occurred first
CE = OE = V_IL
OE = V_IL
CE = V_IL
t_OH
Output Hold from Address, CE or OE,
whichever occurred first
Note: 2,3,4,5. - see AC Waveforms for Read Operation
AC Waveforms for Read Operation⁽¹⁾
-90
Min Max
90
90
50
AT27BV020
-12
Min Max
120
120
50
-15
Min Max
150
150
60
Units
ns
ns
ns
40
40
50 ns
0
0
0
ns
= Preliminary Information
Notes: 1. Timing measurement references are 0.8V and 2.0V. Input AC drive levels are 0.45V and 2.4V, unless otherwise 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.
5