8
AT49BV/LV001(N)(T)
1110C–FLASH–9/03
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.
Note: 1. This parameter is characterized and is not 100% tested.
AC Read Characteristics
Symbol Parameter
AT49LV001(N)(T)-70 AT49BV/LV001(N)(T)-90 AT49BV/LV001(N)(T)-12
UnitsMin Max Min Max Min Max
t
ACC
Address to Output Delay 70 90 120 ns
t
CE
(1)
CE to Output Delay 70 90 120 ns
t
OE
(2)
OE to Output Delay 0 35 0 40 0 50 ns
t
DF
(3)(4)
CE or OE to Output Float 0 25 0 25 0 30 ns
t
OH
Output Hold from OE, CE or
Address, whichever
occurred first
00 0ns
Pin Capacitance
(f = 1 MHz, T = 25°C)
(1)
Symbol Typ Max Units Conditions
C
IN
46pFV
IN
= 0V
C
OUT
812pFV
OUT
= 0V
ADDRESS
OUTPUT
HIGH Z
OUTPUT
OE
CE
t
ACC
t
OE
t
DF
t
OH
t
CE
VALID
ADDRESS VALID
Input Test Waveform and Measurement Level
t
R
, t
F
< 5 ns
AC
MEASUREMENT
LEVEL
AC
DRIVING
LEVELS
0.4V
2.4V
1.5V
Output Load Test
OUTPUT
PIN
3.0V
30 pF
1.8K
1.3K