AT49F002 ATMEL Corporation, AT49F002 Datasheet - Page 9
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AT49F002
Manufacturer Part Number
AT49F002
Description
2-Megabit 256K x 8 5-volt Only Flash Memory
Manufacturer
ATMEL Corporation
Datasheet
1.AT49F002.pdf
(16 pages)
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Program Cycle Characteristics
Program Cycle Waveforms
Sector or Chip Erase Cycle Waveforms
Notes:
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.
2. For chip erase, the address should be 5555. For sector erase, the address depends on what sector is to be erased.
3. For chip erase, the data should be 10H, and for sector erase, the data should be 30H.
(See note 4 under command definitions.)
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
9