5962-8863401XX_ データシートの表示（PDF） - Atmel Corporation
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5962-8863401XX_ Datasheet PDF : 12 Pages
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AT28HC256
AC Read Characteristics
Symbol
tACC
tCE (1)
tOE (2)
tDF (3, 4)
tOH
Parameter
Address to Output Delay
CE to Output Delay
OE to Output Delay
CE or OE to Output Float
Output Hold from OE, CE or
Address, whichever occurred
first
AC Read Waveforms (1, 2, 3, 4)
AT28HC256-70
Min
Max
70
70
0
35
0
35
0
AT28C256-90
Min
Max
90
90
0
40
0
40
0
AT28HC256-12
Min
Max
120
120
0
50
0
50
Units
ns
ns
ns
ns
0
ns
Notes: 1. CE may be delayed up to tACC - tCE after the address
transition without impact on tACC.
2. OE may be delayed up to tCE - tOE after the falling
edge of CE without impact on tCE or by tACC - tOE
after an address change without impact on tACC.
Input Test Waveforms and
Measurement Level
3. tDF is specified from OE or CE whichever occurs first
(CL = 5 pF).
4. This parameter is characterized and is not 100% tested.
Output Test Load
tR, tF < 5 ns
Pin Capacitance (f = 1 MHz, T = 25°C) (1)
Typ
Max
CIN
4
6
COUT
8
12
Note: 1. This parameter is characterized and is not 100% tested.
Units
pF
pF
Conditions
VIN = 0V
VOUT = 0V
2-283
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