EtronTech
AC Characteristics and Operating Conditions
(Ta = -25°C to 85°C, VCC = 2.7V to 3.3V)
Symbol
Parameter
Read Cycle
tRC
tAA
tCO1
tCO2
tOE
tBA
tLZ
tOLZ
tBLZ
tHZ
tOHZ
tBHZ
tOH
tPM
tPC
tPA
Read Cycle Time
Address Access Time
Chip Enable (CE1#) Access Time
Chip Enable (CE2) Access Time
Output Enable access time
Data Byte Control Access Time
Chip Enable Low to Output in Low-
Z
Output enable Low to Output in
Low-Z
Data Byte Control Low to Output in
Low-Z
Chip Enable High to Output in
High-Z
Output Enable High to Output in
High-Z
Data Byte Control High to Output
in High-Z
Output Data Hold Time
Normal to Page Read Cycle Time
Page Cycle Time
Page Mode Address Access Time
Write Cycle
tWC
tWP
tAW
tCW
tBW
tAS
tWR
tWHZ
tOW
tDW
tDH
Write Cycle Time
Write Pulse Width
Address Valid to End of Write
Chip Enable to End of Write
Data Byte Control to End of Write
Address Setup Ttime
Write Recovery Time
WE# Low to Output in High-Z
WE# High to Output in Low-Z
Data to Write Overlap
Data Hold Time
5
30
0
60
45
50
50
50
0
0
20
5
30
0
65
50
55
55
55
0
0
20
70
50
60
60
60
0
0
−
5
30
0
10
60
18
18
15000
10
5
10
20
20
20
10
65
20
20
15000
60
15000
60
60
60
45
60
10
5
10
25
25
25
65
15000
65
65
65
45
65
70
−
−
−
−
−
10
5
10
−
−
−
10
70
25
-60
Min
Max
-65
Min
Max
Min
EM566169BC
-70
Max
-85
Min
Max
Unit
15000
70
70
70
45
70
−
−
−
25
25
25
−
15000
85
−
−
−
−
−
10
5
10
−
−
−
10
85
30
15000 ns
85
85
85
45
85
−
−
−
35
35
35
−
−
30
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
15000 ns
ns
ns
25
−
−
−
−
−
−
−
−
20
−
−
−
85
60
70
70
70
0
0
−
5
35
0
−
−
−
−
−
−
−
30
−
−
−
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
6
Rev 0.6
Apr. 2004
ETRON [ ETRON TECHNOLOGY, INC. ]
