AT49F512(1999) 查看數據表（PDF） - Atmel Corporation
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AT49F512 Datasheet PDF : 12 Pages
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AC Read Characteristics
Symbol Parameter
tACC
tCE(1)
tOE(2)
tDF(3)(4)
tOH
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)
AT49F512
AT49F512-50
Min
Max
50
50
30
0
25
0
AT49F512-70
Min
Max
70
70
35
0
25
0
AT49F512-90
Min
Max
90
90
0
40
0
25
0
Units
ns
ns
ns
ns
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.
3. tDF is specified from OE or CE whichever occurs first (CL = 5 pF).
4. This parameter is characterized and is not 100% tested.
Input Test Waveforms and
Measurement Level
Output Test Load
tR, tF < 5 ns
Pin Capacitance
f = 1 MHz, T= 25°C(1)
Symbol
Typ
Max
CIN
COUT
Note:
4
6
8
12
1. This parameter is characterized and is not 100% tested.
Units
pF
pF
Conditions
VIN = 0V
VOUT = 0V
5
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