AT29C256-12 查看數據表（PDF） - Atmel Corporation
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AT29C256-12 Datasheet PDF : 12 Pages
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AT29C256
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
AT29C256-70
Min
Max
70
70
0
40
0
25
0
AC Read Waveforms (1, 2, 3, 4)
AT29C256-90
Min
Max
90
90
0
40
0
25
0
AT29C256-12
Min
Max
120
120
0
50
0
30
0
AT29C256-15
Min
Max
150
150
0
70
0
40
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)
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
4-97
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