at28c64-20 ATMEL Corporation, at28c64-20 Datasheet - Page 5

• Manufacturer Part Number: at28c64-20
• Description: 64k 8k X 8 Parallel Eeproms
• Manufacturer: ATMEL Corporation

AC Read Characteristics
AC Read Waveforms
Notes:
Input Test Waveforms and
Measurement Level
Pin Capacitance
f = 1 MHz, T = 25°C
Note:
Symbol
t
t
t
t
t
Symbol
C
C
ACC
CE
OE
DF
OH
IN
OUT
(3)(4)
(1)
(2)
t
R
, t
F
1. CE may be delayed up to t
2. OE may be delayed up to t
3. t
4. This parameter is characterized and is not 100% tested.
1. This parameter is characterized and is not 100% tested.
< 20 ns
without impact on t
DF
Parameter
Address to Output Delay
CE to Output Delay
OE to Output Delay
CE or OE High to Output Float
Output Hold from OE, CE or
Address, whichever occurred first
is specified from OE or CE whichever occurs first (C
(1)
Typ
4
8
ACC
(1)(2)(3)(4)
.
ACC
CE
- t
- t
OE
CE
after the falling edge of CE without impact on t
after the address transition without impact on t
Min
AT28C64-12
10
0
0
Max
12
6
Max
120
120
60
45
L
= 5 pF).
Output Test Load
Min
AT28C64-15
10
0
0
Max
150
150
70
50
Units
pF
pF
Min
AT28C64-20
10
0
0
CE
ACC
or by t
AT28C64(X)
.
Max
200
200
80
55
ACC
- t
OE
Min
AT28C64-25
10
0
0
after an address change
Conditions
V
V
OUT
IN
Max
250
250
100
60
= 0V
= 0V
Units
ns
ns
ns
ns
ns
5