Program cycle characteristics, Program cycle waveforms, Sector or chip erase cycle waveforms – Rainbow Electronics AT49F001NT User Manual
Page 9
AT49F001(N)(T)
9
Program Cycle Waveforms
Sector or Chip Erase Cycle Waveforms
Notes:
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.
(See note 4 under command definitions.)
3.
For chip erase, the data should be 10H, and for sector erase, the data should be 30H.
Program Cycle Characteristics
Symbol
Parameter
Min
Typ
Max
Units
t
BP
Byte Programming Time
10
50
µs
t
AS
Address Set-up Time
0
ns
t
AH
Address Hold Time
50
ns
t
DS
Data Set-up Time
50
ns
t
DH
Data Hold Time
0
ns
t
WP
Write Pulse Width
90
ns
t
WPH
Write Pulse Width High
90
ns
t
EC
Erase Cycle Time
10
seconds
OE
PROGRAM CYCLE
INPUT
DATA
ADDRESS
A0
55
5555
5555
AA
2AAA
t
BP
t
WPH
t
WP
CE
WE
A0-A16
DATA
t
AS
t
AH
t
DH
t
DS
OE
(1)
AA
80
Note 3
55
55
5555
5555
Note 2
AA
BYTE 0
BYTE 1
BYTE 2
BYTE 3
BYTE 4
BYTE 5
2AAA
2AAA
tWPH
tWP
CE
WE
A0-A16
DATA
tAS
tAH
tEC
tDH
tDS
5555