AT28HC256-12 ATMEL [ATMEL Corporation], AT28HC256-12 Datasheet - Page 5

• Manufacturer Part Number: AT28HC256-12
• Description: 256 32K x 8 High Speed Parallel EEPROMs
• Manufacturer: ATMEL [ATMEL Corporation]

Notes: 1. CE may be delayed up to t
Pin Capacitance (f = 1 MHz, T = 25°C)
AC Read Characteristics
AC Read Waveforms
Input Test Waveforms and
Measurement Level
t
Note:
R
Symbol
t
t
t
t
t
ACC
CE
OE
DF
OH
, t
C
C
F
(3, 4)
(1)
(2)
IN
OUT
< 5 ns
2. OE may be delayed up to t
1. This parameter is characterized and is not 100% tested.
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
AT28HC256-70
ACC
Min
- t
0
0
0
OE
.
(1)
Max
70
70
35
35
Max
3. t
4. This parameter is characterized and is not 100% tested.
12
6
(C
DF
Output Test Load
L
is specified from OE or CE whichever occurs first
= 5 pF).
AT28C256-90
Min
0
0
0
Max
90
90
40
40
Units
pF
pF
AT28HC256
AT28HC256-12
Min
0
0
0
Conditions
V
V
IN
OUT
Max
120
120
50
50
= 0V
= 0V
Units
ns
ns
ns
ns
ns
2-283