Ac read characteristics, Ac read waveforms(1)(2)(3)(4), Input test waveforms and measurement level – Rainbow Electronics AT28C64X User Manual
Page 5: Output test load, Pin capacitance, At28c64(x), Ac read waveform s
AT28C64(X)
5
AC Read Waveforms
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 (C
L
= 5 pF).
4. This parameter is characterized and is not 100% tested.
Input Test Waveforms and
Measurement Level
Output Test Load
Note:
1. This parameter is characterized and is not 100% tested.
AC Read Characteristics
Symbol
Parameter
AT28C64-12
AT28C64-15
AT28C64-20
AT28C64-25
Units
Min
Max
Min
Max
Min
Max
Min
Max
t
ACC
Address to Output Delay
120
150
200
250
ns
t
CE
CE to Output Delay
120
150
200
250
ns
t
OE
OE to Output Delay
10
60
10
70
10
80
10
100
ns
t
DF
CE or OE High to Output Float
0
45
0
50
0
55
0
60
ns
t
OH
Output Hold from OE, CE or
Address, whichever occurred first
0
0
0
0
ns
t
R
, t
F
< 20 ns
Pin Capacitance
f = 1 MHz, T = 25°C
Symbol
Typ
Max
Units
Conditions
C
IN
4
6
pF
V
IN
= 0V
C
OUT
8
12
pF
V
OUT
= 0V