Manual

AT49F002(N)(T)
7
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.
Input Test Waveform and
Measurement Level
t
R
, t
F
< 5 ns
Output Load Test
Note: 1. This parameter is characterized and is not 100% tested.
AC Read Characteristics
Symbol Parameter
AT49F002(N)(T)
Units
-55-70-90-12
Min Max Min Max Min Max Min Max
t
ACC
Address to Output Delay 55 70 90 120 ns
t
CE
(1)
CE to Output Delay 55 70 90 120 ns
t
OE
(2)
OE to Output Delay 0 30 0 35 0 40 0 50 ns
t
DF
(3)(4)
CE or OE to Output Float 0 25 0 25 0 25 0 30 ns
t
OH
Output Hold from OE, CE
or Address, whichever
occurred first
0000ns
ADDRESS
OUTPUT
HIGH Z
OUTPUT
OE
CE
t
ACC
t
OE
t
DF
t
OH
t
CE
VALID
ADDRESS VALID
5.0V
1.8K
100 pF
30 pF
1.3K
5.0V
1.8K
OUTPUT
PIN
1.3K
OUTPUT
PIN
50 ns
70/90/120 ns
Pin Capacitance
f = 1 MHz, T = 25°C
(1)
Symbol Typ Max Units Conditions
C
IN
46pFV
IN
= 0V
C
OUT
812pFV
OUT
= 0V