at49f020-90ti ATMEL Corporation, at49f020-90ti Datasheet - Page 7

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

Program Cycle Characteristics
Program Cycle Waveforms
Chip Erase Cycle Waveforms
Note:
Symbol
t
t
t
t
t
t
t
t
BP
AS
AH
DS
DH
WP
WPH
EC
1.
OE must be high only when WE and CE are both low.
Parameter
Byte Programming Time
Address Set-up Time
Address Hold Time
Data Set-up Time
Data Hold Time
Write Pulse Width
Write Pulse Width High
Erase Cycle Time
Min
50
50
90
90
0
0
Typ
10
Max
50
10
seconds
Units
ns
ns
ns
ns
ns
ns
s
7