AT49F040A ATMEL Corporation, AT49F040A Datasheet - Page 10
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AT49F040A
Manufacturer Part Number
AT49F040A
Description
4-megabit (512K x 8) 5-volt Only Flash Memory
Manufacturer
ATMEL Corporation
Datasheet
1.AT49F040A.pdf
(16 pages)
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
AT49F040A-70JI
Manufacturer:
TI/NSC
Quantity:
4 300
Part Number:
AT49F040A-70JI
Manufacturer:
ATMEL/爱特梅尔
Quantity:
20 000
Part Number:
AT49F040A-70JU
Manufacturer:
ATMEL/爱特梅尔
Quantity:
20 000
Part Number:
AT49F040A-70TI
Manufacturer:
ATMEL/爱特梅尔
Quantity:
20 000
Program Cycle Characteristics
Program Cycle Waveforms
Sector or Chip Erase Cycle Waveforms
Notes:
10
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 555. 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.
AT49F040A
(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
8
8
Min
25
20
20
20
0
0
Typ
20
6
Max
40
7
3359B–FLASH–10/04
seconds
Units
µs
ns
ns
ns
ns
ns
ns