Rainbow Electronics AT49F001NT - Manual (Page 7)

AT49F001(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
AT49F001(N)(T)-50 AT49F001(N)(T)-70 AT49F001(N)(T)-90 AT49F001(N)(T)-12
Units Min Max Min Max Min Max Min Max
t
ACC
Address to Output Delay 50 70 90 120 ns
t
CE
(1) CE to Output Delay 50 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
0 0 0 0 ns
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
55 ns 70/90/120 ns
Pin Capacitance
f = 1 MHz, T = 25°C (1)
Symbol Typ Max Units Conditions
C
IN
4 6 pF V
IN
= 0V
C
OUT
8 12 pF V
OUT
= 0V