AT28C64(X)
5
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 (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
UnitsMin Max Min Max Min Max Min Max
t
ACC
Address to Output Delay 120 150 200 250 ns
t
CE
(1)
CE to Output Delay 120 150 200 250 ns
t
OE
(2)
OE to Output Delay 10601070108010100ns
t
DF
(3)(4)
CE or OE High to Output Float 045050055060ns
t
OH
Output Hold from OE, CE or
Address, whichever occurred first
0000ns
Pin Capacitance
f = 1 MHz, T = 25°C
(1)
Symbol Typ Max Units Conditions
C
IN
46pFV
IN
= 0V
C
OUT
812pFV
OUT
= 0V
