at49bv002nt-90pi ATMEL Corporation, at49bv002nt-90pi Datasheet - Page 11

• Manufacturer Part Number: at49bv002nt-90pi
• Description: At49bv002 2-megabit 256k X 8 Single 2.7-volt Battery-voltage Flash Memory
• Manufacturer: ATMEL Corporation

Program Cycle Characteristics
Program Cycle Waveforms
Sector or Chip Erase Cycle Waveforms
Notes:
0982D–FLASH–02/03
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
A0 - A17
A0 - A17
DATA
WE
OE
CE
(1)
t
AS
5555
t
BYTE 0
AH
AA
t
t
DS
WP
2AAA
t
BYTE 1
DH
55
5555
t
WPH
BYTE 2
80
5555
BYTE 3
AA
2AAA
Min
70
70
90
90
0
0
BYTE 4
55
AT49BV/LV002(N)(T)
Note 2
BYTE 5
Note 3
Typ
30
t
EC
Max
50
10
seconds
Units
µs
ns
ns
ns
ns
ns
ns
11