at27bv256 ATMEL Corporation, at27bv256 Datasheet - Page 6

• Manufacturer Part Number: at27bv256
• Description: At27bv256 256k 32k X 8 Unregulated Battery-voltage High-speed Otp Eprom
• Manufacturer: ATMEL Corporation

9. AC Characteristics for Read Operation
V
10. AC Waveforms for Read Operation
Notes:
6
Symbol
t
t
t
t
t
CC
ACC
CE
OE
DF
OH
(2)
(4)(5)
(2)(3)
= 2.7V to 3.6V and 4.5V to 5.5V
(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.
6. When reading a AT27BV256, a 0.1 µF capacitor is required across V
AT27BV256
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
(1)
Condition
CE = OE = V
OE = V
CE = V
CC
IL
IL
and ground to suppress spurious voltage transients.
IL
ACC
CE
.
.
Min
AT27BV256-70
0
Max
70
70
50
40
0601E–EPROM–12/07
Units
ns
ns
ns
ns
ns