AT49F1025 ATMEL Corporation, AT49F1025 Datasheet - Page 8

• Manufacturer Part Number: AT49F1025
• Description: 1-Megabit 64K x 16 5-volt Only Flash Memory
• Manufacturer: ATMEL Corporation

Program Cycle Characteristics
Program Cycle Waveforms
Main Memory 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.
OE must be high only when WE and CE are both low.
For chip erase, the address should be 10H. For a main memory erase the data should be 30H.
AT49F1024/1025
A0-A15
DATA
A0-A15
WE
OE
CE
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
t
AS
5555
t
WORD 0
AH
AA
t
t
WP
DS
2AAA
WORD 1
t
DH
55
5555
t
WPH
WORD 2
80
5555
WORD 3
AA
Min
50
90
90
50
0
0
2AAA
WORD 4
55
Typ
10
5555
WORD 5
NOTE 3
Max
50
10
t
EC
seconds
Units
ns
ns
ns
ns
ns
ns
s