EtronTech
Read Cycle
EM564161
AC Characteristics and Operating Conditions (Ta = -40°C to 85°C, VDD = 2.3V to 3.6V)
EM564161
Symbol
tRC
tAA
tCO1
tCO2
tOE
tBA
tLZ
tOLZ
tBLZ
tHZ
tOHZ
tBHZ
tOH
Write Cycle
EM564161
Symbol
Parameter
-55
-70
-85
Unit
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
Parameter
55
−
−
−
−
−
10
3
5
−
−
−
10
-55
-70
-85
Unit
−
85
85
85
45
85
−
−
−
35
35
35
−
ns
Min Max Min Max Min Max
−
55
55
55
25
55
−
−
−
20
20
20
−
70
−
−
−
−
−
10
3
5
−
−
−
10
−
70
70
70
35
70
−
−
−
25
25
25
−
85
−
−
−
−
−
10
3
5
−
−
−
10
Min Max Min Max Min Max
tWC
tWP
tCW
tBW
tAS
tWR
tWHZ
tOW
tDS
tDH
Write cycle time
Write pulse width
Chip Enable to end of write
Data Byte Control to end of Write
Address setup time
Write Recovery time
WE# Low to Output in High-Z
WE# High to Output in Low-Z
Data Setup Time
Data Hold Time
55
45
45
45
0
0
−
5
25
0
−
−
−
−
−
−
25
−
−
−
70
55
60
60
0
0
−
5
30
0
−
−
−
−
−
−
30
−
−
−
85
55
70
70
0
0
−
5
35
0
−
−
−
−
−
−
35
−
−
−
ns
AC Test Condition
•
Output load : 50pF + one TTL gate
•
Input pulse level : 0.4V, 2.4V
•
Timing measurements : 0.5 x VDD
•
tR, tF : 5ns
6
Rev 3.1
Apr. 2004
ETRON [ ETRON TECHNOLOGY, INC. ]
