AT49F020-55JC ATMEL Corporation, AT49F020-55JC Datasheet - Page 7

• Manufacturer Part Number: AT49F020-55JC
• Description: 2-Megabit 256K x 8 5-volt Only CMOS 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
OE must be high only when WE and CE are both low.
A0-A17
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
DATA
A0-A17
WE
OE
CE
DATA
WE
OE
CE
t
AS
t
AS
5555
BYTE 0
5555
AA
t
t
AA
WP
DS
t
AH
2AAA
t
t
WP
DS
t
AH
BYTE 1
2AAA
55
55
5555
t
t
WPH
DH
BYTE 2
80
5555
t
t
WPH
DH
PROGRAM CYCLE
A0
5555
BYTE 3
ADDRESS
AA
INPUT
DATA
2AAA
Min
50
50
90
90
BYTE 4
0
0
55
t
BP
5555
Typ
10
BYTE 5
10
t
EC
Max
50
10
seconds
Units
ns
ns
ns
ns
ns
ns
s
7