at27c020-90pa ATMEL Corporation, at27c020-90pa Datasheet - Page 5

• Manufacturer Part Number: at27c020-90pa
• Description: 2-megabit 256k X 8 Otp Eprom
• Manufacturer: ATMEL Corporation

9. AC Characteristics for Read Operation
10. AC Waveforms for Read Operation
Notes:
0570G–EPROM–12/07
Symbol
t
t
t
t
t
ACC
CE
OE
DF
OH
(2)
(4)(5)
(2)(3)
(3)
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
= V
(1)
IL
IL
IL
Min
7
-55
Max
ACC
55
55
20
18
CE
AT27C020
.
.
Min
0
-90
AT27C020
Max
90
90
35
20
Units
ns
ns
ns
ns
ns
5