at28lv256 ATMEL Corporation, at28lv256 Datasheet - Page 5

• Manufacturer Part Number: at28lv256
• Description: 256k 32k X 8 Low Voltage Cmos E2 Prom
• Manufacturer: ATMEL Corporation

AC Read Waveforms
Pin Capacitance (f = 1 MHz, T = 25°C)
AC Read Characteristics
Notes: 1. CE may be delayed up to t
Input Test Waveforms and
Measurement Level
t
R
Note: 1. This parameter is characterized and is not 100% tested.
Symbol
t
t
t
t
t
ACC
CE
OE
DF
OH
, t
C
C
F
(3, 4)
(1)
(2)
IN
OUT
< 20 ns
2. OE may be delayed up to t
transition without impact on t
edge of CE without impact on t
after an address change without impact on t
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
(1, 2, 3, 4)
ACC
CE
ACC
- t
CE
- t
OE
.
CE
or by t
Typ
after the falling
4
8
after the address
ACC
ACC
- t
OE
.
Min
0
0
0
AT28LV256-20
(1)
Output Test Load
Max
3. t
4. This parameter is characterized and is not 100% tested.
12
6
(C
DF
L
is specified from OE or CE whichever occurs first
= 5 pF).
Max
200
200
80
55
Units
Min
pF
pF
0
0
0
AT28LV256-25
AT28LV256
Max
250
250
100
Conditions
V
V
60
IN
OUT
= 0V
= 0V
Units
ns
ns
ns
ns
ns
2-149