Ac read characteristics, Ac read waveforms(1)(2)(3)(4), Ac read waveforms – Rainbow Electronics AT29C256 User Manual
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AT29C256
0046O–FLASH–06/02
AC Read Waveforms
(1)(2)(3)(4)
Notes:
1. CE may be delayed up to t
ACC
- t
CE
after the address transition without impact on t
ACC
.
2. OE may be delayed up to t
CE
- t
OE
after the falling edge of CE without impact on t
CE
or by t
ACC
- t
OE
after an address change
without impact on t
ACC
.
3. t
DF
is specified from OE or CE whichever occurs first (CL = 5 pF).
4. This parameter is characterized and is not 100% tested.
AC Read Characteristics
Symbol
Parameter
AT29C256-70
AT29C256-90
AT29C256-12
AT29C256-15
Units
Min
Max
Min
Max
Min
Max
Min
Max
t
ACC
Address to Output Delay
70
90
120
150
ns
t
CE
(1)
CE to Output Delay
70
90
120
150
ns
t
OE
(2)
OE to Output Delay
0
40
0
40
0
50
0
70
ns
t
DF
(3)(4)
CE or OE to Output Float
0
25
0
25
0
30
0
40
ns
t
OH
Output Hold from OE, CE or Address,
whichever occurred first
0
0
0
0
ns
Note:
Not recommended for New Designs.