AT49F020-55JI ATMEL [ATMEL Corporation], AT49F020-55JI Datasheet - Page 6

• Manufacturer Part Number: AT49F020-55JI
• Description: 2-Megabit 256K x 8 5-volt Only CMOS Flash Memory
• Manufacturer: ATMEL [ATMEL Corporation]

AC Byte Load Characteristics
AC Byte Load Waveforms
WE Controlled
CE Controlled
6
Symbol
t
t
t
t
t
t
t
t
AS
AH
CS
CH
WP
DS
DH
WPH
, t
, t
OES
OEH
Parameter
Address, OE Set-up Time
Address Hold Time
Chip Select Set-up Time
Chip Select Hold Time
Write Pulse Width (WE or CE)
Data Set-up Time
Data, OE Hold Time
Write Pulse Width High
ADDRESS
ADDRESS
DATA IN
DATA IN
AT49F020
WE
WE
OE
OE
CE
CE
t
t
t
t
CS
CS
AS
AS
t
t
OES
OES
t
t
AH
AH
t
t
t
DS
t
DS
WP
WP
t
t
t
t
t
t
OEH
CH
t
OEH
CH
t
WPH
WPH
DH
DH
Min
90
50
90
50
0
0
0
0
Max
Units
ns
ns
ns
ns
ns
ns
ns
ns