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AT27LV256A Datasheet(Hoja de datos) 5 Page - ATMEL Corporation

No. de Pieza. AT27LV256A
Descripción  256K 32K x 8 Low Voltage OTP CMOS EPROM
Descarga  9 Pages
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Fabricante  ATMEL [ATMEL Corporation]
Página de inicio  http://www.atmel.com
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AC Characteristics for Read Operation (VCC = 3.0V to 3.6V and 4.5V to 5.5V)
AT27LV256A
-70
-90
-12
-15
Symbol
Parameter
Condition
Min
Max
Min
Max
Min
Max
Min
Max
Units
tACC (3)
Address to Output Delay
CE = OE = VIL
70
90
120
150
ns
tCE (2)
CE to Output Delay
OE = VIL
70
90
120
150
ns
tOE (2, 3)
OE to Output Delay
CE = VIL
50
50
50
60
ns
tDF (4, 5)
OE or CE High to Output Float,
whichever occurred first
40
40
40
50
ns
tOH
Output Hold from Address, CE or
OE, whichever occurred first
0
0
0
0
ns
Notes:
2, 3, 4, 5. - see AC Waveforms for Read Operation.
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
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.
AT27LV256A
3-79




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