at27c040 ATMEL Corporation, at27c040 Datasheet - Page 5

• Manufacturer Part Number: at27c040
• Description: 4-megabit 512k X 8 Otp Eprom
• Manufacturer: ATMEL Corporation

9. AC Characteristics for Read Operation
Note:
10. AC Waveforms for Read Operation
Notes:
0189H–EPROM–12/07
Symbol
t
t
t
t
t
ACC
CE
OE
DF
OH
(1)
(1)
(1)
(1)
1. See AC Waveforms for Read Operation
1. Timing measurement references are 0.8V and 2.0V. Input AC drive levels are 0.45V and 2.4V, unless otherwise specified.
2. OE may be delayed up to t
3. OE may be delayed up to t
4. This parameter is only sampled and is not 100% tested.
5. Output float is defined as the point when data is no longer driven.
Parameter
Address to Output Delay
CE to Output Delay
OE to Output Delay
OE or CE High to Output Float, Whichever Occurred First
Output Hold from Address, CE or OE, Whichever Occurred
First
CE
ACC
- t
- t
OE
OE
after the falling edge of CE without impact on t
after the address is valid without impact on t
Condition
CE = OE
OE = V
CE = V
(1)
= V
IL
IL
IL
Min
0
-70
ACC
CE
Max
.
.
70
70
30
20
AT27C040
Min
0
-90
AT27C040
Max
90
90
35
20
Units
ns
ns
ns
ns
ns
5