AT28BV256-20 ATMEL Corporation, AT28BV256-20 Datasheet - Page 5

• Manufacturer Part Number: AT28BV256-20
• Description: 256K (32K x 8) Battery-Voltage Parallel EEPROMs
• Manufacturer: ATMEL Corporation

AC Read Characteristics
AC Read Waveforms
Notes:
0273H–PEEPR–10/04
Symbol
t
t
t
t
t
ACC
CE
OE
DF
OH
(1)
(3)(4)
(2)
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.
without impact on t
DF
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
is specified from OE or CE whichever occurs first (C
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
t
ACC
L
t
= 5 pF).
CE
t
OE
Min
AT28BV256-20
0
0
0
Max
200
200
80
55
t
OH
CE
ACC
t
or by t
DF
.
Min
ACC
AT28BV256-25
0
0
0
- t
OE
AT28BV256
after an address change
Max
250
250
100
60
Units
ns
ns
ns
ns
ns
5