AT49F2048-12RI ATMEL [ATMEL Corporation], AT49F2048-12RI Datasheet - Page 8

• Manufacturer Part Number: AT49F2048-12RI
• Description: 2-Megabit 128K x 16 5-volt Only CMOS Flash Memory
• Manufacturer: ATMEL [ATMEL Corporation]

Program Cycle Characteristics
Program Cycle Waveforms
Sector or Chip Erase Cycle Waveforms
Notes:
8
Symbol
t
t
t
t
t
t
t
t
BP
AS
AH
DS
DH
WP
WPH
EC
1.
2.
3.
Parameter
Word 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
OE must be high only when WE and CE are both low.
For chip erase, the address should be 5555. For sector erase, the address depends on what sector is to be erased. (See
note 4 under command definitions.)
For chip erase, the data should be 10
A0-A16
DATA
WE
OE
CE
A0-A16
AT49F2048
(1)
DATA
WE
OE
CE
t
AS
t
AS
5555
WORD 0
AA
5555
t
t
WP
DS
t
AH
AA
2AAA
H
t
t
WORD 1
DS
WP
t
, and for sector erase, the data should be 30
AH
55
2AAA
55
5555
t
t
WPH
DH
WORD 2
80
5555
t
t
PROGRAM CYCLE
WPH
DH
A0
5555
WORD 3
ADDRESS
AA
INPUT
DATA
2AAA
WORD 4
55
t
BP
Note 2
H
WORD 5
.
Note 3
5555
Min
100
100
10
50
50
10
t
AA
EC
Max
50
10
seconds
Units
ns
ns
ns
ns
ns
ns
s