at49f020-90ti ATMEL Corporation, at49f020-90ti Datasheet - Page 8

• Manufacturer Part Number: at49f020-90ti
• Description: 2-megabit 256k X 8 5-volt Only Flash Memory
• Manufacturer: ATMEL Corporation

Data Polling Characteristics
Notes:
Data Polling Waveforms
Toggle Bit Characteristics
Notes:
Toggle Bit Waveforms
Notes:
8
Symbol
t
t
t
t
Symbol
t
t
t
t
t
DH
OEH
OE
WR
DH
OEH
OE
OEHP
WR
1. These parameters are characterized and not 100% tested.
2. See t
1. These parameters are characterized and not 100% tested.
2. See t
1.
2.
3.
Toggling either OE or CE or both OE and CE will operate toggle bit. The t
input(s).
Beginning and ending state of I/O6 will vary.
Any address location may be used but the address should not vary.
Parameter
Data Hold Time
OE Hold Time
OE to Output Delay
Write Recovery Time
Parameter
Data Hold Time
OE Hold Time
OE to Output Delay
OE High Pulse
Write Recovery Time
OE
OE
spec in AC Read Characteristics.
spec in AC Read Characteristics.
AT49F020
(2)
(2)
(1)(2)(3)
(1)
(1)
Min
Min
150
OEHP
10
10
10
10
0
0
specification must be met by the toggling
Typ
Typ
Max
Max
Units
Units
ns
ns
ns
ns
ns
ns
ns
ns
ns