AM27C256-120EC AMD [Advanced Micro Devices], AM27C256-120EC Datasheet - Page 12

• Manufacturer Part Number: AM27C256-120EC
• Description: 256 Kilobit (32,768 x 8-Bit) CMOS EPROM
• Manufacturer: AMD [Advanced Micro Devices]

KEY TO SWITCHING TEST WAVEFORMS
SWITCHING WAVEFORMS
Notes:
1. OE may be delayed up to t
2. t
DF
Addresses
is specified from OE or CE , whichever occurs first.
Output
0.45
2.4
CE
OE
High Z
ACC
–t
OE
after the falling edge of the addresses without impact on t
2.0
0.8
WAVEFORM
(Note 1)
t
ACC
t
CE
Am27C256
Addresses Valid
t
OE
INPUTS
Must Be
Steady
May
Change
from H to L
May
Change
from L to H
Don’t Care,
Any Change
Permitted
Does Not
Apply
Valid Output
OUTPUTS
Will Be
Steady
Will Be
Changing
from H to L
Will Be
Changing
from L to H
Changing
State
Unknown
Center
Line is High
Impedence
“Off” State
2.0
0.8
t
OH
ACC.
KS000010
(Note 2)
08007H-10
High Z
t
DF
AMD
2-43