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AT27C020 Datasheet(Hoja de datos) 5 Page - ATMEL Corporation

No. de Pieza. AT27C020
Descripción  2-Megabit 256K x 8 OTP EPROM
Descarga  9 Pages
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Fabricante  ATMEL [ATMEL Corporation]
Página de inicio  http://www.atmel.com
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AT27C020
5
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 t
CE - tOE after the falling edge of CE without impact on tCE.
3.
OE may be delayed up to t
ACC - 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.
Input Test Waveforms and Measurement Levels
For -55 devices only:
t
R, tF < 5 ns (10% to 90%)
For -70,-90,-12,-15 devices only:
tR, tF < 20 ns (10% to 90%)
0.0V
3.0V
1.5V
AC
DRIVING
LEVELS
AC
MEASUREMENT
LEVEL
Pin Capacitance
f = 1 MHz, T = 25
°C(1)
Note:
1. Typical values for nominal supply voltage. This parameter is only sampled and is not 100% tested.
Typ
Max
Units
Conditions
C
IN
48
pF
V
IN = 0V
C
OUT
812
pF
V
OUT = 0V
Output Test Load
(1)
Note:
1.
CL = 100 pF including jig
capacitance except -55
devices where CL = 30 pF.




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