AT49F040A ATMEL Corporation, AT49F040A Datasheet - Page 7

• Manufacturer Part Number: AT49F040A
• Description: 4-megabit (512K x 8) 5-volt Only Flash Memory
• Manufacturer: ATMEL Corporation

AC Read Characteristics
AC Read Waveforms
Notes:
3359B–FLASH–10/04
Symbol
t
t
t
t
t
ACC
CE
OE
DF
OH
(1)
(3)(4)
(2)
1. CE may be delayed up to t
2. OE may be delayed up to t
3. t
4. This parameter is characterized and is not 100% tested.
without impact on t
DF
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
is specified from OE or CE whichever occurs first (CL = 5 pF).
ACC
.
(1)(2)(3)(4)
ACC
CE
ADDRESS
OUTPUT
- t
- t
OE
CE
after the falling edge of CE without impact on t
OE
CE
after the address transition without impact on t
HIGH Z
ADDRESS
t
ACC
t
CE
t
OE
Min
VALID
AT49F040A-55
0
0
0
OUTPUT
VALID
t
OH
Max
55
55
30
25
t
DF
CE
ACC
or by t
.
Min
AT49F040A-70
0
0
0
ACC
- t
OE
AT49F040A
after an address change
Max
70
70
35
25
Units
ns
ns
ns
ns
ns
7