AT49F002 查看數據表（PDF） - Atmel Corporation
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AT49F002 Datasheet PDF : 17 Pages
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AT49F002(N)(T)
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
-55
Min
Max
55
55
0
30
0
25
0
AT49F002(N)(T)
-70
-90
Min
Max
Min
Max
70
90
70
90
0
35
0
40
0
25
0
25
0
0
-12
Min
Max
120
120
0
50
0
30
Units
ns
ns
ns
ns
0
ns
AC Read Waveforms (1)(2)(3)(4)
ADDRESS
ADDRESS VALID
CE
tCE
OE
tOE
t DF
tACC
tOH
OUTPUT
HIGH Z
OUTPUT
VALID
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 Waveform and
Measurement Level
Output Load Test
50 ns
70/90/120 ns
5.0V
5.0V
tR, tF < 5 ns
1.8K
OUTPUT
PIN
30 pF
1.3K
1.8K
OUTPUT
PIN
100 pF
1.3K
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
7
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