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| AT27BV020_07 Datasheet, PDF (6/15 Pages) ATMEL Corporation – 2-megabit (256K x 8) Unregulated Battery-Voltage High-speed OTP EPROM | |||
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9. AC Characteristics for Read Operation
VCC = 2.7V to 3.6V and 4.5V to 5.5V
Symbol
tACC(3)
tCE(2)
tOE(2)(3)
tDF(4)(5)
tOH
Parameter
Address to Output Delay
CE to Output Delay
OE to Output Delay
OE or CE High to Output Float, Whichever Occurred First
Output Hold from Address, CE or OE, Whichever
Occurred First
Condition
CE = OE = VIL
OE = VIL
CE = VIL
10. AC Waveforms for Read Operation(1)
AT27BV020-90
Min
Max
90
90
50
40
0
Units
ns
ns
ns
ns
ns
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 tCE - tOE after the falling edge of CE without impact on tCE.
3. OE may be delayed up to tACC - tOE after the address is valid without impact on tACC.
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 AT27BV020
0902FâEPROMâ12/07
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